I have trouble moving to another listview activity from current navigation drawer listview.
From MyActivity to OS. look at case 3 under public void selection().
MainActivity.java
public void SelectItem(int possition) {
Fragment fragment = null;
Bundle args = new Bundle();
switch (possition) {
case 0:
// Home
fragment = new FragmentOne();
args.putString(FragmentOne.ITEM_NAME, (String) getText(R.string.desc));
args.putInt(FragmentOne.IMAGE_RESOURCE_ID, dataList.get(possition).getImgResID());
break;
case 1:
fragment = new FragmentHome();
break;
case 2:
fragment = new FragmentThree();
break;
case 3:
**Intent menu = new Intent(this,OperatingSystem.class);
startActivity(menu);**
break;
case 4:
fragment = new fragmentFour();
break;
case 5:
// About
fragment = new FragmentFive();
break;
default:
break;
}
fragment.setArguments(args);
FragmentManager frgManager = getFragmentManager();
frgManager.beginTransaction().replace(R.id.content_frame, fragment)
.commit();
mDrawerList.setItemChecked(possition, true);
setTitle(dataList.get(possition).getItemName());
mDrawerLayout.closeDrawer(mDrawerList);
}
OperatingSystem.java
package com.example.faez.bodyalarm;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class OperatingSystem extends ListActivity {
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
String[] values = new String[] { "Android", "iPhone", "WindowsMobile",
"Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X",
"Linux", "OS/2" };
// use your custom layout
ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
R.layout.listview, R.id.mainListView, values);
setListAdapter(adapter);
setContentView(R.layout.listview);
}
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
String item = (String) getListAdapter().getItem(position);
Toast.makeText(this, item + " selected", Toast.LENGTH_LONG).show();
}
}
AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.faez.bodyalarm" >
<application
android:debuggable="true"
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity android:name=".MainSplashScreen">
</activity>
<activity
android:name=".MyActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".OperatingSystem"></activity>
</application>
</manifest>
Really appreciate if you guys can help. no problem during build it just stop when debug on phone.
in case 3 you should add return; after startActivity(menu); because that after the switch case you have some more code that will crash if you continue since your "fragment" var will stay null.
Try checking your OperatingSystem.java. I think setContentView() is not neccessary in ListActivity.
Also for the ArrayAdapter, you may want to put a layout containing a TextView and its corresponding ID.
Example
ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
R.layout.row_view, android.R.id.text1, values);
row_view.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#android:id/text1" />
Related
Main Activity ScreenI have made a custom calendar with textview, So I want the calendar to show current date and month when I open the calendar...
`My calendar should open directly in the current month and show the current date, just like google calendar.
<TextView
android:textColor="#color/Blue"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:fontFamily="#font/caviardreams"
android:gravity="top|center"
android:text="1"
android:textSize="11sp"
android:textStyle="bold"
android:maxWidth="1dp"
android:maxHeight="1dp"/>
<TextView
android:textColor="#color/Blue"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:fontFamily="#font/caviardreams"
android:gravity="top|center"
android:text="2"
android:textSize="11sp"
android:textStyle="bold"
android:maxWidth="1dp"
android:maxHeight="1dp"/>
<TextView
android:textColor="#color/Blue"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:fontFamily="#font/caviardreams"
android:gravity="top|center"
android:text="3"
android:textSize="11sp"
android:textStyle="bold"
android:maxWidth="1dp"
android:maxHeight="1dp"/>
`
I expect the current date to be highlighted in the current month.
This is the java code of MainActivity
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
ViewPager viewPager;
EditText txt;
Button btn;
String str;
AdView adView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
//admob app id
MobileAds.initialize(this,"ca-app-pub-6376378742627184~5911477780");
adView = (AdView)findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().addTestDevice(AdRequest.DEVICE_ID_EMULATOR).build();
adView.loadAd(adRequest);
}
public void date(View view) {
}
private class MyPagerAdapter extends FragmentStatePagerAdapter {
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int pos) {
switch(pos) {
case 0: return Frag1.newInstance("Frag1, Instance 1");
case 1: return Frag2.newInstance("Frag2, Instance 2");
case 2: return Frag3.newInstance("Frag3, Instance 3");
case 3: return Frag4.newInstance("Frag4, Instance 4");
case 4: return Frag5.newInstance("Frag5, Instance 5");
case 5: return Frag6.newInstance("Frag6, Instance 6");
case 6: return Frag7.newInstance("Frag7, Instance 7");
case 7: return Frag8.newInstance("Frag8, Instance 8");
case 8: return Frag9.newInstance("Frag9, Instance 9");
case 9: return Frag10.newInstance("Frag10, Instance 10");
case 10: return Frag11.newInstance("Frag11, Instance 11");
case 11: return Frag12.newInstance("Frag12, Instance 12");
default: return Frag1.newInstance("Frag1, Default");
}
}
#Override
public int getCount() {
return 12;
}
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
finish();
System.exit(0);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
finish();
System.exit(0);
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
ApplicationInfo app = getApplicationContext().getApplicationInfo();
String filePath = app.sourceDir;
int id = item.getItemId();
if (id == R.id.home)
{
// Handle the camera action
Intent a = new Intent(MainActivity.this,MainActivity.class);
startActivity(a);
}
else if (id == R.id.about)
{
Intent b = new Intent(MainActivity.this,About.class);
startActivity(b);
}
else if (id == R.id.nav_share)
{
Intent c = new Intent(Intent.ACTION_SEND);
c.setType("*/*");
String shareBody = "https://play.google.com/store/apps/details?id=com.jangphong.hem.karbicalender2";
String shareSub = "Download Karbi calendar 2019";
c.putExtra(Intent.EXTRA_SUBJECT,shareSub);
c.putExtra(Intent.EXTRA_TEXT,shareBody);
c.putExtra(Intent.EXTRA_STREAM,Uri.fromFile(new File(filePath)));
startActivity(Intent.createChooser(c,"Share using"));
}
else if (id == R.id.feedback)
{
Intent in = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.karbidigitalresources.tk"));
startActivity(in);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
This is the Manifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.jangphong.hem.karbicalender2">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_karbi_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_karbi_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar" />
<activity android:name=".About" />
<activity
android:name=".SplashScreen"
android:noHistory="true"
android:theme="#style/AppTheme.Splash">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".edit_text" />
<activity android:name=".feb" />
<activity android:name=".march" />
<activity android:name=".april" />
<activity android:name=".may" />
<activity android:name=".june" />
<activity android:name=".july" />
<activity android:name=".august" />
<activity android:name=".sep" />
<activity android:name=".oct" />
<activity android:name=".nov" />
<activity android:name=".dec"></activity>
</application>
I want to ask for help.
I already created a list of activities in Android Studio.
Each Activity contains a specific item. Those items are different "Departments" in our University.
Example:
Activity 1 = College of Computer Studies;
Activity 2 = College of Teacher Education;
Activity 3 = College of Engineering.
My Spinner contains the departments.
My problem is, if I choose "College in Computer Science" in Spinner and click the "SEND" button, I want Activity 1 to be shown.
Would you help me with the code to do that?
**Spinner in activity_main.xml
<Spinner
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/spin"
android:entries="#array/punpDepartments"
android:layout_gravity="center_vertical">
</Spinner>
**These are the items in strings.xml
<string-array name="punpDepartments">
<item>College of Computer Studies</item>
<item>College of Business Education</item>
<item>College of Criminal Justice Education</item>
<item>College of Marine Education</item>
<item>College of Nursing</item>
<item>College of Pharmacy</item>
<item>College of Education</item>
**My code in Intent at MainActivity.java
public class MainActivity extends ActionBarActivity {
private static Button button_send;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
OnClickButtonListener();
}
public void OnClickButtonListener(){
button_send = (Button) findViewById(R.id.button);
button_send.setOnClickListener(
new View.OnClickListener(){
#Override
public void onClick(View v){
Intent intent = new Intent("com.example.imelda.mythesis.ListActivity");
startActivity(intent);
}
}
);
}
**Extends in ListActivity.java
public class ListActivity extends ActionBarActivity {
private static Button button_next;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
OnClickButtonListener();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_list, menu);
return true;
}
public void OnClickButtonListener() {
button_next = (Button) findViewById(R.id.button4);
button_next.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent("com.example.imelda.mythesis.SecondList");
startActivity(intent);
}
}
);
}
**I have also added this in AndroidManifest.xml enter code here
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.imelda.mythesis" >
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ListActivity"
android:label="#string/title_activity_list" >
<intent-filter>
<action android:name="com.example.imelda.mythesis.ListActivity" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
first get your spinner in the main class like this
Spinner spin =(Spinner)findViewById(R.id.spin);
now in your on click method do this
int position =spin.getSelectedItemPosition();
//change the activities with yours
switch (position){
case 0: intent.setClass(Activity1.class,MainActivity.this);
break;
case 1: intent.setClass(Activity2.class,MainActivity.this);
break;
case 2: intent.setClass(Activity3.class,MainActivity.this);
break;
case 3: intent.setClass(Activity4.class,MainActivity.this);
break;
case 4: intent.setClass(Activity5.class,MainActivity.this);
break;
}
startActivity(intent);
I don't know what I'm making wrong, but my App crash when I launch. I want to implement Tab bar list with FragmentActivity.
I really need help :(
The error returned is :
Unable to start activity ComponentInfo
Caused by: java.lang.NullPointerException
at jardelcompany.bundoransurfco.MainActivity.onCreate(MainActivity.java:79)
(line 79 is actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);)
MainActivity.java :
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mSectionsPagerAdapter = new SectionsPagerAdapter(this,
getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager
.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
actionBar.addTab(actionBar.newTab()
.setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
activity_main.xml :
<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=".MainActivity"
android:id="#+id/mainLayout"
android:background="#FFFFFF"> />
<view
android:layout_width="match_parent"
android:layout_height="match_parent"
class="android.support.v4.view.ViewPager"
android:id="#+id/pager"/>
</RelativeLayout>
I use SectionsPagerAdapter for FragmentPageAdapter
SectionsPagerAdapter.java:
public class SectionsPagerAdapter extends FragmentPagerAdapter {
protected Context mContext;
public SectionsPagerAdapter(Context context, FragmentManager fm) {
super(fm);
mContext = context;
}
#Override
public Fragment getItem(int position) {
switch(position) {
case 0:
return new FirstFragment();
case 1:
return new LoginFragment();
}
return null;
}
#Override
public int getCount() {
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return mContext.getString(R.string.title_section1).toUpperCase(l);
case 1:
return mContext.getString(R.string.title_section2).toUpperCase(l);
}
return null;
}
}
FirstFragment.java:
public class FirstFragment extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_main,
container, false);
return rootView;
}
}
LoginFragment.java :
public class LoginFragment extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_login,
container, false);
return rootView;
}
}
Here is my AndroidManifest.xml :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="jardelcompany.bundoransurfco" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" /> <!-- To retrieve the account name (email) as part of sign-in: -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" /> <!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".LoginActivity"
android:label="#string/title_activity_login"
android:parentActivityName=".MainActivity"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize|stateVisible" >
</activity>
</application>
</manifest>
And my styles.xml :
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
</style>
</resources>
Remove this code into separate method like:
private void initUI(){
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mSectionsPagerAdapter = new SectionsPagerAdapter(this,
getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager
.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
actionBar.addTab(actionBar.newTab()
.setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
and call this method from onResume() instead of onCreate(). Also you are using getActionBar() and same time getSupportFragmentManager() maybe you should use getSupportActionBar()? What is the min API level of your project?
Try adding this line of code to your manifest file
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="14" />
Even after defining com.facebook.LoginActivity in my AndroidManifest.xml file the logcat gives the same error and asks to define com.facebook.LoginActivity as activity. I have followed this https://developers.facebook.com/docs/android/login-with-facebook/v2.2#step2 tutorial.
Here is my androidmanifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.log"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.log.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="#string/facebook_app_id" />
<activity
android:name="com.facebook.loginActivity"
android:label="#string/app_name" >
</activity>
</application>
</manifest>
MainActivity.java
package com.example.log;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
public class MainActivity extends FragmentActivity {
private MainFragment mainFragment;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.fragment_main);
if (savedInstanceState == null) {
// Add the fragment on initial activity setup
mainFragment = new MainFragment();
getSupportFragmentManager()
.beginTransaction()
.add(android.R.id.content, mainFragment)
.commit();
} else {
// Or set the fragment from restored state info
mainFragment = (MainFragment) getSupportFragmentManager()
.findFragmentById(android.R.id.content);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class MainFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main, container, false);
return view;
}
}
}
fragment_main.xml file
<LinearLayout 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"
android:orientation="vertical">
<com.facebook.widget.LoginButton
android:id="#+id/authButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
/>
</LinearLayout>
The facebook login activity is com.facebook.LoginActivity with a capital 'L'. You're using a lower case l.
I am a new developer of Android App and learning all tips from Getting Started. I'm now on the second stage phase 2 "Adding Action Button" and stuck with adding the actions to the action bar. Here is my current situation.
MyfirstApp Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myfirstapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme.Holo.Light" >
<activity
android:name="com.example.myfirstapp.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- A child of the main activity -->
<activity
android:name="com.example.myfirstapp.DisplayMessageActivity"
android:label="#string/title_activity_display_message"
android:parentActivityName="com.example.myfirstapp.MainActivity" >
<!-- Parent activity meta-data to support 4.0 and lower -->
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.myfirstapp.MainActivity" />
</activity>
</application>
</manifest>
2.main(menu).xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:yourapp="http://schemas.android.com/apk/res-auto" >
<!-- Search, should appear as action button -->
<item android:id="#+id/action_search"
android:icon="#drawable/ic_action_search"
android:title="#string/action_search"
yourapp:showAsAction="ifRoom" />
<!-- Settings, should always be in the overflow -->
<item android:id="#+id/action_settings"
android:title="#string/action_settings"
android:showAsAction="never" />
</menu>
3.MainActivity.java
package com.example.myfirstapp;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
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.EditText;
#SuppressLint("ValidFragment")
public class MainActivity extends ActionBarActivity {
public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_displaymessage);
getActionBar().setDisplayHomeAsUpEnabled(true);
// If your minSdkVersion is 11 or higher, instead use:
// getActionBar().setDisplayHomeAsUpEnabled(true);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu items for use in the action bar
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_activity_actions, menu);
return super.onCreateOptionsMenu(menu);
}
/** Called when the user clicks the Send button */
public void sendMessage(View view) {
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle presses on the action bar items
switch (item.getItemId()) {
case R.id.action_search:
openSearch();
return true;
case R.id.action_settings:
openSettings();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void openSettings() {
}
private void openSearch() {
}
/**
* A placeholder fragment containing a simple view.
*/
public class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
}
I see two errors from MainActivity.java
1.
inflater.inflate(R.menu.main_activity_actions, menu);
The method inflate(int, Menu) in the type MenuInflater is not applicable for the arguments (Object, Menu)
2.
case R.id.action_search:
case expressions must be constant expressions
I tried to figure out those 2 errors for couple days but I couldn't. Please help.