I am using code from the developer website (http://developer.android.com/training/implementing-navigation/nav-drawer.html) to install a navigation drawer, however, I am getting a NullPointerException in this method:
/* Called whenever we call invalidateOptionsMenu() */
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the nav drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_search).setVisible(!drawerOpen);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
Here is the error
04-14 20:51:39.720: D/dalvikvm(826): GC_FOR_ALLOC freed 93K, 6% free 3119K/3284K, paused 95ms, total 96ms
04-14 20:51:39.970: I/Choreographer(826): Skipped 69 frames! The application may be doing too much work on its main thread.
04-14 20:51:40.360: I/Choreographer(826): Skipped 256 frames! The application may be doing too much work on its main thread.
04-14 20:51:40.440: D/gralloc_goldfish(826): Emulator without GPU emulation detected.
04-14 20:51:40.730: D/AndroidRuntime(826): Shutting down VM
04-14 20:51:40.730: W/dalvikvm(826): threadid=1: thread exiting with uncaught exception (group=0xb2ac7ba8)
04-14 20:51:40.740: E/AndroidRuntime(826): FATAL EXCEPTION: main
04-14 20:51:40.740: E/AndroidRuntime(826): Process: com.example.myfirstapp, PID: 826
04-14 20:51:40.740: E/AndroidRuntime(826): java.lang.NullPointerException
04-14 20:51:40.740: E/AndroidRuntime(826): at com.example.myfirstapp.MainActivity.onPrepareOptionsMenu(MainActivity.java:139)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.app.Activity.onPreparePanel(Activity.java:2556)
04-14 20:51:40.740: E/AndroidRuntime(826): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:464)
04-14 20:51:40.740: E/AndroidRuntime(826): at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:800)
04-14 20:51:40.740: E/AndroidRuntime(826): at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:221)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.view.Choreographer.doCallbacks(Choreographer.java:574)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.view.Choreographer.doFrame(Choreographer.java:543)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.os.Handler.handleCallback(Handler.java:733)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.os.Handler.dispatchMessage(Handler.java:95)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.os.Looper.loop(Looper.java:136)
04-14 20:51:40.740: E/AndroidRuntime(826): at android.app.ActivityThread.main(ActivityThread.java:5017)
04-14 20:51:40.740: E/AndroidRuntime(826): at java.lang.reflect.Method.invokeNative(Native Method)
04-14 20:51:40.740: E/AndroidRuntime(826): at java.lang.reflect.Method.invoke(Method.java:515)
04-14 20:51:40.740: E/AndroidRuntime(826): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-14 20:51:40.740: E/AndroidRuntime(826): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-14 20:51:40.740: E/AndroidRuntime(826): at dalvik.system.NativeStart.main(Native Method)
Here is the rest of the main activity
package com.example.myfirstapp;
import java.util.Locale;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.SearchManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
mPlanetTitles = getResources().getStringArray(R.array.navigation_drawer_options);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer_list_item, mPlanetTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
/* Called whenever we call invalidateOptionsMenu() */
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the nav drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_search).setVisible(!drawerOpen);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action buttons
// switch(item.getItemId()) {
// case R.id.action_websearch:
// // create intent to perform web search for this planet
// Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
// intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
// // catch event that there's no activity to handle intent
// if (intent.resolveActivity(getPackageManager()) != null) {
// startActivity(intent);
// } else {
// Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
// }
// return true;
// default:
return super.onOptionsItemSelected(item);
// }
}
/* The click listner for ListView in the navigation drawer */
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
}
#Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
}
menu xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.myfirstapp.MainActivity" >
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never"/>
</menu>
Your menu.xml has only one time with id= action_settings. You should add another menu item for search.
example:
You can use searchView
<item
android:id="#+id/action_search"
android:icon="#drawable/ic_action_search"
android:title="#string/action_search"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="ifRoom|collapseActionView" />
Related
Just wanted to share an issue that I have with a project that I am doing for a client.
Whenever I enter to my IntroActivity and press the button to take me to MenuActivity, it crashes.
Here is the error log:
02-16 18:49:49.393 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ No view found for id 0x7f090047 (com.wlodsgn.bunbunup:id/linear) for fragment FmMenu{b1e537f0 #0 id=0x7f090047}
02-16 18:49:49.393 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ Activity state:
02-16 18:49:49.423 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ Local FragmentActivity b1e1d1b8 State:
02-16 18:49:49.423 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ mCreated=falsemResumed=false mStopped=false mReallyStopped=false
02-16 18:49:49.423 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ mLoadersStarted=false
02-16 18:49:49.443 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ FragmentManager misc state:
02-16 18:49:49.443 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ mActivity=com.wlodsgn.bunbunup.MenuActivity#b1e1d1b8
02-16 18:49:49.443 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ mContainer=android.support.v4.app.FragmentActivity$2#b1e1ed08
02-16 18:49:49.453 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ mCurState=1 mStateSaved=false mDestroyed=false
02-16 18:49:49.453 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ View Hierarchy:
02-16 18:49:49.453 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ com.android.internal.policy.impl.PhoneWindow$DecorView{b1e23d08 V.E..... ... 0,0-0,0}
02-16 18:49:49.473 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.LinearLayout{b1e24280 V.E..... ... 0,0-0,0}
02-16 18:49:49.473 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.view.ViewStub{b1e24da8 G.E..... ... 0,0-0,0 #102030e}
02-16 18:49:49.473 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.FrameLayout{b1e25038 V.E..... ... 0,0-0,0}
02-16 18:49:49.473 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.support.v7.internal.widget.ActionBarOverlayLayout{b1e2db28 V.E..... ... 0,0-0,0 #7f09002f app:id/decor_content_parent}
02-16 18:49:49.483 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.support.v7.internal.widget.NativeActionModeAwareLayout{b1e2f758 V.E..... ... 0,0-0,0 #1020002 android:id/content}
02-16 18:49:49.483 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ [ 02-16 18:49:49.513 1208: 1208 E/FragmentManager ]
android.support.v4.widget.DrawerLayout{b1e2c058 VFE..... ... 0,0-0,0 #7f090042 app:id/drawer_layout}
02-16 18:49:49.513 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.LinearLayout{b1e1fa90 V.E..... ... 0,0-0,0}
02-16 18:49:49.523 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.support.v4.view.ViewPager{b1e29568 VFED.... ... 0,0-0,0 #7f090043 app:id/pager}
02-16 18:49:49.523 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.ListView{b1e44148 VFED.VC. ... 0,0-0,0 #7f090044 app:id/listView1}
02-16 18:49:49.523 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.ListView{b1dd80b8 VFED.VC. ... 0,0-0,0 #7f090045 app:id/list_slidermenu}
02-16 18:49:49.523 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.support.v7.internal.widget.ActionBarContainer{b1e2fcd0 V.ED.... ... 0,0-0,0 #7f090030 app:id/action_bar_container}
02-16 18:49:49.533 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.support.v7.widget.Toolbar{b1e30898 V.E..... ... 0,0-0,0 #7f090031 app:id/action_bar}
02-16 18:49:49.533 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.ImageButton{b1e39da8 VFED..C. ... 0,0-0,0}
02-16 18:49:49.533 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.widget.TextView{b1e28a60 V.ED.... ... 0,0-0,0}
02-16 18:49:49.533 1208-1208/com.wlodsgn.bunbunup E/FragmentManager﹕ android.support.v7.internal.widget.ActionBarContextView{b1e43a50 G.E..... ... 0,0-0,0 #7f090032 app:id/action_context_bar}
02-16 18:49:49.543 1208-1208/com.wlodsgn.bunbunup D/AndroidRuntime﹕ Shutting down VM
02-16 18:49:49.543 1208-1208/com.wlodsgn.bunbunup W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb1a87ba8)
02-16 18:49:49.573 1208-1208/com.wlodsgn.bunbunup E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.wlodsgn.bunbunup, PID: 1208
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.wlodsgn.bunbunup/com.wlodsgn.bunbunup.MenuActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f090047 (com.wlodsgn.bunbunup:id/linear) for fragment FmMenu{b1e537f0 #0 id=0x7f090047}
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f090047 (com.wlodsgn.bunbunup:id/linear) for fragment FmMenu{b1e537f0 #0 id=0x7f090047}
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:882)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
at android.app.BackStackRecord.run(BackStackRecord.java:684)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
at android.app.Activity.performStart(Activity.java:5240)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2168)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Here is my MenuActivity.java where the error is located (Nearly at the end starts with if (fragment != null) { :
import java.util.ArrayList;
import java.util.List;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.MenuItemCompat;
import android.support.v4.view.MenuItemCompat.OnActionExpandListener;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.SearchView.OnQueryTextListener;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
/**
* Created by WiLo on 2/13/2015.
*/
public class MenuActivity extends ActionBarActivity implements OnQueryTextListener, OnActionExpandListener{
/*private TextView texto;*/
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
// slide menu items
private String[] navMenuTitles;
private TypedArray navMenuIcons;
private ArrayList<NavDrawerItem> navDrawerItems;
private NavDrawerListAdapter adapter;
String[] categoria = {
"Jeans"
};
int[] imagenes = {
R.drawable.veroxjeans1,
R.drawable.veroxjeans2,
R.drawable.veroxjeans3,
R.drawable.veroxjeans4,
R.drawable.veroxjeans5,
R.drawable.veroxjeans6,
R.drawable.veroxjeans7
};
SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
/*texto = (TextView) findViewById(R.id.texto);*/
mTitle = mDrawerTitle = getTitle();
// load slide menu items
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
// nav drawer icons from resources
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
navDrawerItems = new ArrayList<NavDrawerItem>();
// agregar un nuevo item al menu deslizante
// Menu
navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
// Contacto
navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
// Catologo
//navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1), true, "Estrenos"));
// old Contacto (Pedidos)
//navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1)));
// Recycle the typed array
navMenuIcons.recycle();
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
// setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
mDrawerList.setAdapter(adapter);
// enabling action bar app icon and behaving it as toggle button
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //nav menu toggle icon
R.string.app_name, // nav drawer open - description for accessibility
R.string.app_name // nav drawer close - description for accessibility
) {
public void onDrawerClosed(View view) {
getSupportActionBar().setTitle(mTitle);
// calling onPrepareOptionsMenu() to show action bar icons
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getSupportActionBar().setTitle(mDrawerTitle);
// calling onPrepareOptionsMenu() to hide action bar icons
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
// on first time display view for first nav item
displayView(0);
}
//lista
ListView lista = (ListView) findViewById(R.id.listView1);
ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, categoria );
lista.setAdapter(adapter);
//galeria de imagenes
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[0]));
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[1]));
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[2]));
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[3]));
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[4]));
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[5]));
mSectionsPagerAdapter.addfragments(PlaceholderFragment.newInstance(imagenes[6]));
mViewPager.setAdapter(mSectionsPagerAdapter);
}
#Override
public boolean onMenuItemActionExpand(MenuItem menuItem) {
Toast.makeText(getApplicationContext(), "Abriendo Busqueda", Toast.LENGTH_SHORT).show();
return true;
}
#Override
public boolean onMenuItemActionCollapse(MenuItem menuItem) {
Toast.makeText(getApplicationContext(), "Cerrando Busqueda", Toast.LENGTH_SHORT).show();
return true;
}
#Override
public boolean onQueryTextSubmit(String s) {
/*texto.setText("Buscando...\n\n" + s);*/
return false;
}
#Override
public boolean onQueryTextChange(String s) {
/*texto.setText(" \n\n" + s);*/
return false;
}
/**
* Slide menu item click listener
* */
private class SlideMenuClickListener implements
ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// display view for selected nav drawer item
displayView(position);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
MenuItem searchItem = menu.findItem(R.id.menu3_buscar);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setOnQueryTextListener(this);
MenuItemCompat.setOnActionExpandListener(searchItem, this);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Pass the event to ActionBarDrawerToggle, if it returns
// true, then it has handled the app icon touch event
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
return super.onOptionsItemSelected(item);
}
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new FmMenu();
break;
case 1:
fragment = new FmContacto();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.linear, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("BunBunUp", "MenuActivity - Error cuando se creo el fragment");
}
}
#Override
public void setTitle(CharSequence title) {
mTitle = title;
getSupportActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggle
mDrawerToggle.onConfigurationChanged(newConfig);
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
List<android.support.v4.app.Fragment> fragmentos;
public SectionsPagerAdapter(android.support.v4.app.FragmentManager fm) {
super(fm);
fragmentos = new ArrayList<android.support.v4.app.Fragment>();
}
public void addfragments(android.support.v4.app.Fragment xfragment){
fragmentos.add(xfragment);
}
#Override
public android.support.v4.app.Fragment getItem(int position) {
return fragmentos.get(position);
}
#Override
public int getCount() {
return fragmentos.size();
}
}
public static class PlaceholderFragment extends android.support.v4.app.Fragment {
private static final String ARG_IMAGE = "imagen";
private int imagen;
public static PlaceholderFragment newInstance(int imagen) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_IMAGE, imagen);
fragment.setArguments(args);
fragment.setRetainInstance(true);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if(getArguments() != null) {
imagen = getArguments().getInt(ARG_IMAGE);
}
}
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_menu, container, false);
ImageView imagenView = (ImageView) rootView.findViewById(R.id.imageView1);
imagenView.setImageResource(imagen);
return rootView;
}
}
}
Here are the rest (If needed) of the files that are linked to MenuActivity :
FmMenu.java
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* Created by WiLo on 2/13/2015.
*/
public class FmMenu extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.lay_menufragment, container, false);
return rootView;
}
}
activity_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff0a393d">
<!-- Linearlayout to display Fragments -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="265dp"
tools:context=".MenuActivity" />
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/listView1"
android:layout_gravity="center_horizontal" />
</LinearLayout>
<!-- Listview to display slider menu -->
<ListView
android:id="#+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#color/list_divider"
android:dividerHeight="1dp"
android:listSelector="#drawable/list_selector"
android:background="#color/list_background"/>
</android.support.v4.widget.DrawerLayout>
fragment_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MenuActivity$PlaceholderFragment"
android:id="#+id/linear">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView1"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
lay_menufragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
</LinearLayout>
New error log:
02-17 09:41:20.480 917-917/com.wlodsgn.bunbunup W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb1ad9ba8)
02-17 09:41:20.560 917-917/com.wlodsgn.bunbunup E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.wlodsgn.bunbunup, PID: 917
java.lang.OutOfMemoryError
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:587)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:422)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:840)
at android.content.res.Resources.loadDrawable(Resources.java:2110)
at android.content.res.Resources.getDrawable(Resources.java:700)
at android.widget.ImageView.resolveUri(ImageView.java:638)
at android.widget.ImageView.setImageResource(ImageView.java:367)
at com.wlodsgn.bunbunup.MenuActivity$PlaceholderFragment.onCreateView(MenuActivity.java:345)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:16497)
at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:851)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:16497)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
at android.view.View.measure(View.java:16497)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer.java:544)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
Need more info, let me know
Any help would be appreciated
I think I have found something.
fragmentManager.beginTransaction()
.replace(R.id.linear, fragment).commit();
As you see you try to replace the layout R.id.linear with your fragment. But the R.id.linear is the RelativeLayout you use in your fragment_menu.xml. You should replace the layout in your activity_menu.xml with the current fragment. So I would suggest:
fragmentManager.beginTransaction().replace(R.id.container, fragment).commit();
And in your activity_menu.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff0a393d">
<!-- Linearlayout to display Fragments -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/container">
EDIT:
For the new error: There is a problem with your memory. This often happens when ImageViews are filled by big ressources. So there is only one position where you use an ImageView:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_menu, container, false);
ImageView imagenView = (ImageView) rootView.findViewById(R.id.imageView1);
imagenView.setImageResource(imagen);
return rootView;
}
As you see, your imagenView is filled by the resource imagen
imagenView.setImageResource(imagen);
Probably you get the OutOfMemoryError there. As a solution, try this:
try {
imagenView.setImageResource(imagen);
} catch (OutOfMemoryError e) {
//fill your ImageView with something smaller .. maybe a smaller resolution
Log.e("PlaceholderFragment", "Error: OutOfMemoryError")
}
Check your imagen too, whether there is a high resolution needed.
I'm having a problem building my first App. I'm using Navigation drawer to switch between fragments. But when i choose OrderFragment from Navigation drawer, app crashes.
OrderFragment has only one button showing a toast when clicked, but the app crashes before the OrderFragment loads.
The code is:
MainActivity.java
package com.example.testcocogeek;
import android.app.Activity;
import android.app.Fragment;
import android.app.SearchManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
private String[] mListOptions;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private ActionBarDrawerToggle mDrawerToggle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
mListOptions = getResources().getStringArray(R.array.list_options);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// Set adapter for the list view
mDrawerList.setAdapter (new ArrayAdapter<String> (this,
R.layout.drawer_list_item, mListOptions));
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// Set the list click listener
mDrawerList.setOnItemClickListener (new DrawerItemClickListener());
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
/* Called whenever we call invalidateOptionsMenu() */
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the nav drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action buttons
switch(item.getItemId()) {
case R.id.action_websearch:
// create intent to perform web search for this planet
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY, "Cocogeek");
// catch event that there's no activity to handle intent
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
} else {
Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
}
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/* The click listener for ListView in the navigation drawer */
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
// This method selects correct fragment.
private void selectItem(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
Bundle args = new Bundle();
switch (position) {
case 0:
fragment = new CocogeekFragment();
break;
case 1:
fragment = new OrderFragment();
break;
case 2:
fragment = new LocatorFragment();
break;
case 3:
fragment = new ContactFragment();
break;
default:
break;
}
fragment.setArguments(args);
android.app.FragmentManager frgManager = getFragmentManager();
frgManager.beginTransaction().replace(R.id.content_frame, fragment)
.commit();
mDrawerList.setItemChecked(position, true);
setTitle(mListOptions[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
#Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggles
mDrawerToggle.onConfigurationChanged(newConfig);
}
}
OrderFragment.java
package com.example.testcocogeek;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class OrderFragment extends Fragment implements OnClickListener {
public OrderFragment() {
// Empty constructor required for fragment subclasses
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View mView = (View) inflater.inflate(R.layout.order_fragment, container, false);
// Initialize UI views.
final Button send = (Button) getActivity().findViewById(R.id.send);
//Initialize OnClick listener.
send.setOnClickListener(this);
return mView;
}
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "Clicked" ,Toast.LENGTH_LONG).show();
}
}
activity_main.xml
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFF5EE"
>
<!-- The main content view -->
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
</FrameLayout>
<!-- The navigation drawer -->
<ListView android:id="#+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#858585"/>
</android.support.v4.widget.DrawerLayout>
order_fragment.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/send"
/>
</LinearLayout>
logCat:
07-08 12:28:09.332: D/dalvikvm(30471): GC_FOR_ALLOC freed 165K, 2% free 16940K/17136K, paused 15ms, total 15ms
07-08 12:28:09.362: I/dalvikvm-heap(30471): Grow heap (frag case) to 35.315MB for 19655120-byte allocation
07-08 12:28:09.372: D/dalvikvm(30471): GC_FOR_ALLOC freed 2K, 1% free 36132K/36332K, paused 11ms, total 11ms
07-08 12:28:09.522: I/Adreno-EGL(30471): <qeglDrvAPI_eglInitialize:320>: EGL 1.4 QUALCOMM Build: I0404c4692afb8623f95c43aeb6d5e13ed4b30ddbDate: 11/06/13
07-08 12:28:09.542: D/OpenGLRenderer(30471): Enabling debug mode 0
07-08 12:28:11.852: D/AndroidRuntime(30471): Shutting down VM
07-08 12:28:11.852: W/dalvikvm(30471): threadid=1: thread exiting with uncaught exception (group=0x41625ba8)
07-08 12:28:11.862: E/AndroidRuntime(30471): FATAL EXCEPTION: main
07-08 12:28:11.862: E/AndroidRuntime(30471): Process: com.example.testcocogeek, PID: 30471
07-08 12:28:11.862: E/AndroidRuntime(30471): java.lang.NullPointerException
07-08 12:28:11.862: E/AndroidRuntime(30471): at com.example.testcocogeek.OrderFragment.onCreateView(OrderFragment.java:29)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.Fragment.performCreateView(Fragment.java:1700)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.BackStackRecord.run(BackStackRecord.java:684)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:443)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.os.Handler.handleCallback(Handler.java:733)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.os.Handler.dispatchMessage(Handler.java:95)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.os.Looper.loop(Looper.java:136)
07-08 12:28:11.862: E/AndroidRuntime(30471): at android.app.ActivityThread.main(ActivityThread.java:5001)
07-08 12:28:11.862: E/AndroidRuntime(30471): at java.lang.reflect.Method.invokeNative(Native Method)
07-08 12:28:11.862: E/AndroidRuntime(30471): at java.lang.reflect.Method.invoke(Method.java:515)
07-08 12:28:11.862: E/AndroidRuntime(30471): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
07-08 12:28:11.862: E/AndroidRuntime(30471): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
07-08 12:28:11.862: E/AndroidRuntime(30471): at dalvik.system.NativeStart.main(Native Method)
07-08 12:28:13.332: I/Process(30471): Sending signal. PID: 30471 SIG: 9
At first sight you should replace:
final Button send = (Button) getActivity().findViewById(R.id.send);
with:
final Button send = (Button) mView.findViewById(R.id.send);
R.id.send id is contained in the Fragment view mView.
I've implemented Tab Layout and my app is not starting. I get NullPointerException on this line:
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
I think that everything is done properly. I can't find my mistake.
MainActivity:
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import com.msh.numeral_system_converter_adapter.TabsPagerAdapter;
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "Converter", "Calculator"};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
//actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
Log file:
04-11 17:44:02.553 1545-1545/com.msh.numeral_system_converter E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.msh.numeral_system_converter, PID: 1545
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.msh.numeral_system_converter/com.msh.numeral_system_converter.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.msh.numeral_system_converter.MainActivity.onCreate(MainActivity.java:34)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
getActionBar() can retrun null if your window don't have an ActionBar. Like if you chose the Theme.NoTitleBar style as an Activity/Application theme.
Use this code instead (picked from there):
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// The Action Bar is a window feature. The feature must be requested
// before setting a content view. Normally this is set automatically
// by your Activity's theme in your manifest. The provided system
// theme Theme.WithActionBar enables this for you. Use it as you would
// use Theme.NoTitleBar. You can add an Action Bar to your own themes
// by adding the element <item name="android:windowActionBar">true</item>
// to your style definition.
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
setContentView(R.layout.main);
// experiment with the ActionBar
ActionBar actionBar = getActionBar();
}
This link also may help.
This code:
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
//actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
You assign actionBar from the getActionBar() method, but you didn't provide that code. My guess is that getActionBar() is returning null. The NullPointerException is coming from trying to call setNavigationMode on a null object, probably not from referencing the field on ActionBar.
Using above fix you may get another error :-
requestFeature() must be called before adding content
to solve that problem use this fix :-
Don't call setContentView() before requestFeature().
This exception arises when you have selected a theme with no ActionBar.
Try using a theme like,
<style name="AppTheme" parent="#android:style/Theme.Holo.Light">
<!-- Customize your theme here. -->
</style>
Hi I followed a tutorial I am trying to test sliding menu (Navigation drawer) in android but I am continuously getting these error in logcat. Please help me or give me some idea so that I can proceed to resolve the issue.HELP................
2-12 18:37:43.976: E/Trace(698): error opening trace file: No such file or directory (2)
02-12 18:37:44.666: I/System.out(698): activity started-----------
02-12 18:37:44.666: I/System.out(698): 3
02-12 18:37:44.676: D/AndroidRuntime(698): Shutting down VM
02-12 18:37:44.676: W/dalvikvm(698): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
02-12 18:37:44.696: E/AndroidRuntime(698): FATAL EXCEPTION: main
02-12 18:37:44.696: E/AndroidRuntime(698): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.navigationdrawertest/com.example.navigationdrawertest.HomeActivity}: java.lang.NullPointerException
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.ActivityThread.access$600(ActivityThread.java:130)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.os.Handler.dispatchMessage(Handler.java:99)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.os.Looper.loop(Looper.java:137)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.ActivityThread.main(ActivityThread.java:4745)
02-12 18:37:44.696: E/AndroidRuntime(698): at java.lang.reflect.Method.invokeNative(Native Method)
02-12 18:37:44.696: E/AndroidRuntime(698): at java.lang.reflect.Method.invoke(Method.java:511)
02-12 18:37:44.696: E/AndroidRuntime(698): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-12 18:37:44.696: E/AndroidRuntime(698): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-12 18:37:44.696: E/AndroidRuntime(698): at dalvik.system.NativeStart.main(Native Method)
02-12 18:37:44.696: E/AndroidRuntime(698): Caused by: java.lang.NullPointerException
02-12 18:37:44.696: E/AndroidRuntime(698): at com.example.navigationdrawertest.HomeActivity.onCreate(HomeActivity.java:40)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.Activity.performCreate(Activity.java:5008)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
02-12 18:37:44.696: E/AndroidRuntime(698): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
02-12 18:37:44.696: E/AndroidRuntime(698): ... 11 more
02-12 18:37:48.396: I/Process(698): Sending signal. PID: 698 SIG: 9
Also my HomeActivity.java file
package com.example.navigationdrawertest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import com.example.navigationdrawertest.operatingsystemfragment.*;
public class HomeActivity extends Activity {
private String[] mPlanetTitles;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence title;
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
System.out.println("activity started-----------");
title = getActionBar().getTitle();
mPlanetTitles = getResources().getStringArray(R.array.operating_systems);
System.out.println(mPlanetTitles.length);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// Set the adapter for the list view
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.nav_drawer,R.id.content_frame, mPlanetTitles));
System.out.println("adapater set to list");
// Set the list's click listener
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description */
R.string.drawer_close /* "close drawer" description */) {
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
getActionBar().setTitle(title);
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle("Open Drawer");
}
};
// Set the drawer toggle as the DrawerListener and then Drawer layout will listen on Drawertoggle
mDrawerLayout.setDrawerListener(mDrawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
System.out.println("on create method completed");
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
System.out.println("DrawerItemClickListener");
selectItem(position);
}
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.home, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Pass the event to ActionBarDrawerToggle, if it returns
// true, then it has handled the app icon touch event
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
switch (item.getItemId()) {
case R.id.action_settings:
Toast.makeText(this, "Settings selected", Toast.LENGTH_LONG).show();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
/** Swaps fragments in the main content view */
private void selectItem(int position) {
System.out.println("selectItem called");
// create a new fragment and specify the planet to show based on position
Fragment fragment = new OperatingSystemFragment();
Bundle args = new Bundle();
args.putInt(OperatingSystemFragment.ARG_OS, position);
fragment.setArguments(args);
// Insert the fragment by replacing any existing fragment
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.content_frame, fragment)
.commit();
// Highlight the selected item, update the title, and close the drawer
mDrawerList.setItemChecked(position, true);
getActionBar().setTitle((mPlanetTitles[position]));
mDrawerLayout.closeDrawer(mDrawerList);
}
}
I have to use navigation drawer in API 8 so using support packages. Please help me.
Either your mDrawerList is null or mPlanetTitles is null. Check them both at the debugger.
2-12 18:37:43.976: E/Trace(698): error opening trace file: No such file or directory (2)
The error You are facing is in this line of code
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.nav_drawer,R.id.content_frame, mPlanetTitles));
mPlanetTitles seems to be null
I am trying to develop a simple app with navigation drawer.
I do all my best and view so many articles but I failed
There is no error in my code but when I run my app in emulator it shows run time error...
plzz help me
here is my logcat file
12-19 15:07:20.562: E/AndroidRuntime(1067): FATAL EXCEPTION: main
12-19 15:07:20.562: E/AndroidRuntime(1067): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dhruv.sms/com.dhruv.sms.MainActivity}: java.lang.NullPointerException
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.ActivityThread.access$600(ActivityThread.java:141)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.os.Handler.dispatchMessage(Handler.java:99)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.os.Looper.loop(Looper.java:137)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.ActivityThread.main(ActivityThread.java:5039)
12-19 15:07:20.562: E/AndroidRuntime(1067): at java.lang.reflect.Method.invokeNative(Native Method)
12-19 15:07:20.562: E/AndroidRuntime(1067): at java.lang.reflect.Method.invoke(Method.java:511)
12-19 15:07:20.562: E/AndroidRuntime(1067): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
12-19 15:07:20.562: E/AndroidRuntime(1067): at com.android.internal.os.ZygoteInit.main
(ZygoteInit.java:560)
12-19 15:07:20.562: E/AndroidRuntime(1067): at dalvik.system.NativeStart.main(Native Method)
12-19 15:07:20.562: E/AndroidRuntime(1067): Caused by: java.lang.NullPointerException
12-19 15:07:20.562: E/AndroidRuntime(1067): at com.dhruv.sms.MainActivity.onCreate(MainActivity.java:80)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.Activity.performCreate(Activity.java:5104)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
12-19 15:07:20.562: E/AndroidRuntime(1067): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
12-19 15:07:20.562: E/AndroidRuntime(1067): ... 11 more
And this is my java file
package com.dhruv.sms;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends Activity {
// Within which the entire activity is enclosed
private DrawerLayout mDrawerLayout;
// ListView represents Navigation Drawer
private ListView mDrawerList;
// ActionBarDrawerToggle indicates the presence of Navigation Drawer in the action bar
private ActionBarDrawerToggle mDrawerToggle;
// Title of the action bar
private String mTitle = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = "App title";
getActionBar().setTitle(mTitle);
// Getting reference to the DrawerLayout
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.conversation_list);
// Getting reference to the ActionBarDrawerToggle
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_launcher, R.string.drawer_open,
R.string.drawer_close) {
/** Called when drawer is closed */
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu();
}
/** Called when a drawer is opened */
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle("App title");
invalidateOptionsMenu();
}
};
// Setting DrawerToggle on DrawerLayout
mDrawerLayout.setDrawerListener(mDrawerToggle);
// Creating an ArrayAdapter to add items to the listview mDrawerList
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(),
R.layout.drawer_list_item, getResources().getStringArray(R.array.sidebar_list_array));
// Setting the adapter on mDrawerList
mDrawerList.setAdapter(adapter);
// Enabling Home button
getActionBar().setHomeButtonEnabled(true);
// Enabling Up navigation
getActionBar().setDisplayHomeAsUpEnabled(true);
// Setting item click listener for the listview mDrawerList
mDrawerList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// Getting an array of rivers
String[] menuItems = getResources().getStringArray(R.array.sidebar_list_array);
// Currently selected river
mTitle = menuItems[position];
// Creating a fragment object
Fragment rFragment = new Fragment();
// Passing selected item information to fragment
// Getting reference to the FragmentManager
FragmentManager fragmentManager = getFragmentManager();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, rFragment);
// Committing the transaction
ft.commit();
// Closing the drawer
mDrawerLayout.closeDrawer(mDrawerList);
}
});
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
/** Called whenever we call invalidateOptionsMenu() */
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
The variable mDrawerList might not be initialised correctly. It could be null, thus causing the NullPointerException.
There is an error in your code. The stack trace shows that. And here's the relevant information
12-19 15:07:20.562: E/AndroidRuntime(1067): Caused by: java.lang.NullPointerException
12-19 15:07:20.562: E/AndroidRuntime(1067): at com.dhruv.sms.MainActivity.onCreate(MainActivity.java:80)
Line 80 shows mDrawerList being accessed. It's null
the error is in this part of your code
mDrawerList.setAdapter(adapter);
mDrawerList reference might be wrong or adapter is wrong
private ListView mDrawerList=new ListView();
You haven't initialized the ListView.