I want to make my class and layout change when I click on specific items. For example, if I click "physical" from the array list I want it to open up the physical java class and the physical xml layout. How do i do this? As you can see down below I have already tried with the View view and switch/case.
import android.content.Intent;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import android.support.v4.app.FragmentActivity;
import java.util.List;
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemClickListener{
private DrawerLayout drawerLayout;
private Toolbar toolbar;
private ListView listView;
private String[] planets;
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_appbar);
toolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
NavigationDrawerFragment drawerFragment = (NavigationDrawerFragment)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), toolbar);
drawerLayout=(DrawerLayout)findViewById(R.id.drawerLayout);
planets=getResources().getStringArray(R.array.planets);
listView=(ListView) findViewById(R.id.drawerList);
listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, planets));
listView.setOnItemClickListener(this);
}
#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_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
return super.onOptionsItemSelected(item);
}
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(this, planets[position] + " was selected", Toast.LENGTH_LONG).show();
selectItem(position);
selectItem2(view);
}
public void selectItem(int position) {
listView.setItemChecked(position, true);
setTitle(planets[position]);}
public void selectItem2 (View view){
switch (view.getId()) {
case 0:
Intent intent = new Intent(view.getContext(), physical_fragment.class);
startActivityForResult(intent, 0);}}
public void setTitle(String title){
getSupportActionBar().setTitle(title);
}
}
You probably don't want compare the id of the View since all of the Views in your list will use android.R.layout.simple_list_item_1 they will all have the same id.
You may consider passing the position and comparing that.
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(this, planets[position] + " was selected", Toast.LENGTH_LONG).show();
selectItem(position);
selectItem2(position);
}
public void selectItem2 (int position) {
switch (position) {
case 0:
Intent intent = new Intent(MainActivity .this, physical_fragment.class);
startActivityForResult(intent, 0);
break;
}
}
Something like that should get you started. However, you may eventually want to check the content of the item selected such as the the actual position of the string resource then get that id in case you decide to switch around the list items or modify them in some other way.
Related
I had added 2 spinners to my cricket scoring app and there are no compiler errors however my app keeps crashing on start. It was working fine when I added the first spinner but the moment I added the second spinner the app started to crash. Please help.
package com.example.visha.cricketcounter;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
private Spinner spinner;
private Spinner spinner2;
EditText text = (EditText)findViewById(R.id.editText);
String value = text.getText().toString();
EditText text2 = (EditText)findViewById(R.id.editText2);
String value2 = text2.getText().toString();
private static final String[]paths = {"15", "20", "30"};
private final String[]paths1 = {value, value2};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
spinner = (Spinner)findViewById(R.id.spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this,
android.R.layout.simple_spinner_item,paths);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
spinner2 = (Spinner)findViewById(R.id.spinner2);
ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(MainActivity.this,
android.R.layout.simple_spinner_item,paths1);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(adapter2);
spinner2.setOnItemSelectedListener(this);
}
#Override
public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {
switch (position) {
case 0:
// Whatever you want to happen when the first item gets selected
break;
case 1:
// Whatever you want to happen when the second item gets selected
break;
case 2:
// Whatever you want to happen when the thrid item gets selected
break;
}
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {}
#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_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) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
You should implement OnItemSelectedListener to access the onItemSelected method.
you are passing this in method like setOnItemSelectedListener(this) means you are passing reference of listener as class but you don't implemented listener, impalement OnItemSelectedListener like following and try,
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener
Your activity must implement the interface onItemSelectedListener and override the method OnNothingSelected
Example:
public class MainActivity extends AppCompatActivity implements onItemSelectedListener{
....
Then with the Mouse Cursor in the Main Activity let your IDE auto insert all the missing method implementations
package com.example.android.sunshine;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.ShareActionProvider;
import android.util.Log;
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.TextView;
public class DetailActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new DetailFragment())
.commit();
}
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Inflate the menu; this adds items to the action bar if it is present.
inflater.inflate(R.menu.detailfragment, menu);
MenuItem menuItem=menu.findItem(R.id.action_share);
ShareActionProvider mShareActionProvider= (ShareActionProvider) MenuItemCompat.getActionProvider(menuItem);
if(mShareActionProvider!=null)
{
mShareActionProvider.setShareIntent(createShareForecastIntent());
}
else
{
Log.d(LOG_TAG,"Amen");
}
//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) {
startActivity(new Intent(this,SettingsActivity.class));
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class DetailFragment extends Fragment {
private static final String LOG_TAG = DetailFragment.class.getSimpleName();
private static final String FORECAST_SHARE_HASHTAG = " #SunshineApp";
private String mForecastStr;
public DetailFragment() {
setHasOptionsMenu(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Intent intent = getActivity().getIntent();
View rootView = inflater.inflate(R.layout.fragment_detail, container, false);
if (intent != null && intent.hasExtra(Intent.EXTRA_TEXT)) {
mForecastStr = intent.getStringExtra(Intent.EXTRA_TEXT);
((TextView) rootView.findViewById(R.id.detail_text)).setText(mForecastStr);
}
return rootView;
}
private Intent createShareForecastIntent() {
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, mForecastStr + FORECAST_SHARE_HASHTAG);
return shareIntent;
}
}
}
In the code above when the line in the onCreateOptionsMenu where I use LOG_TAG and where I use createShareForecastIntent says cannot resolve symbol and method. I tried googling it but couldn't find anything. I am new to android and java both.
You need to define LOG_TAG in your DetailActivity first as such:
private static final String LOG_TAG = "Some tag string";
Declare createShareForecastIntent as static since FORECAST_SHARE_HASHTAG is static. if you want to use them inside a non-static class method, you can either declare it public and call it like this: DetailFragment.FORECAST_SHARE_HASHTAG, or simply declare the method that's using it without class reference as static.
i.e.:
public static final String FORECAST_SHARE_HASHTAG = " #SunshineApp";
// call it like this, referencing the class name
shareIntent.putExtra(Intent.EXTRA_TEXT, mForecastStr + DetailFragment.FORECAST_SHARE_HASHTAG);
I'm trying to implement a swipe tab views like this http://www.androidhive.info/2013/10/android-tab-layout-with-swipeable-views-1/.
But when I try to implement getItems method in the Adapter, it doesn't accept my custom Fragment.
Here's the code:
MyActivity.java
package com.bob.app;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.view.*;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity implements android.support.v7.app.ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private String[] tabs = { getString(R.string.tab_home), getString(R.string.tab_city), getString(R.string.tab_name),getString(R.string.tab_favorites) };
private DrawerLayout drawerLayout;
private ListView listView;
private String[] Drawer_menu_item;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final android.support.v7.app.ActionBar actionbar = getSupportActionBar();
actionbar.setNavigationMode(android.support.v7.app.ActionBar.NAVIGATION_MODE_TABS);
viewPager = (ViewPager) findViewById(R.id.pager);
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionbar.setHomeButtonEnabled(true);
// Adding Tabs
for (String tab_name : tabs) {
actionbar.addTab(actionbar.newTab().setText(tab_name)
.setTabListener((android.support.v7.app.ActionBar.TabListener) this));
Drawer_menu_item= getResources().getStringArray(R.array.menu_item);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
listView = (ListView) findViewById(R.id.left_drawer);
// Set the adapter for the list view
listView.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer, Drawer_menu_item));
/* Set the list's click listener
listView.setOnItemClickListener(new DrawerItemClickListener());*/
}
}
#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_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) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onTabSelected(android.support.v7.app.ActionBar.Tab tab, android.support.v4.app.FragmentTransaction ft) {
}
#Override
public void onTabUnselected(android.support.v7.app.ActionBar.Tab tab, android.support.v4.app.FragmentTransaction ft) {
}
#Override
public void onTabReselected(android.support.v7.app.ActionBar.Tab tab, android.support.v4.app.FragmentTransaction ft) {
}
public class TabsPagerAdapter extends FragmentPagerAdapter {
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int index) {
switch (index) {
case 0:
/* Home fragment
return new Home_fragment();
case 1:
/* City fragment
return new City_fragment();
case 2:
/* Name fragment
return new Name_fragment();
case 3:
/* Favourites fragment
return new Fav_fragment();
}
return null;
}
#Override
public int getCount() {
// get item count - equal to number of tabs
return tabs.length;
}
}
}
Name_fragment.java
package com.bob.sluurpy.app;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* Created by boob on 11/09/15.
*/
public class Name_fragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.name, container, false);
return rootView;
}
}
Please import this import android.support.v4.app.Fragment; in place of import android.app.Fragment; in Name_fragment this may solve your issue!
I have no idea on what is wrong with my code.
My application is using navigation drawer. There are 4 different fragments and one of it is a cardview fragment which I have converted earlier from activity to fragment.
The cardview fragment is being underlined red which shows error that would not able to be compiled. Kindly refer the attached pictures.
If I were to accept the proposed solutions by the Android Studio,it will just solve the CardViewFragment and new problem would occur at the other 3 fragments.
And this is both my main activity and the cardview fragment.
MainActivity.java
package info.androidhive.materialdesign.activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
import info.androidhive.materialdesign.R;
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// display the first navigation drawer view on app launch
displayView(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.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) {
return true;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new HomeFragment();
title = getString(R.string.title_home);
break;
case 1:
fragment = new FriendsFragment();
title = getString(R.string.title_friends);
break;
case 2:
fragment = new MessagesFragment();
title = getString(R.string.title_messages);
break;
case 3:
fragment = new CardViewFragment();
title = getString(R.string.title_messages);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
getSupportActionBar().setTitle(title);
}
}
}
CardViewFragment.java
package info.androidhive.materialdesign.activity;
import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.CardView;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import java.util.ArrayList;
import info.androidhive.materialdesign.R;
public class CardViewFragment extends Fragment {
private Toolbar toolbar;
private RecyclerView recyclerView;
private CardView cardView;
private ArrayList<FeddProperties> os_versions;
private RecyclerView.Adapter mAdapter;
// private RecyclerView.LayoutManager mLayoutManager;
private LinearLayout llLayout;
private FragmentActivity faActivity;
#Override
/*protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initContrls();
}*/
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
faActivity=(FragmentActivity)
super.getActivity();
llLayout=(LinearLayout)
inflater.inflate(R.layout.activity_main, container, false);
initContrls();
return llLayout;
}
private void initContrls() {
//toolbar = (Toolbar) findViewById(R.id.toolbar);
// cardView = (CardView) findViewById(R.id.cardList);
recyclerView = (RecyclerView) llLayout.findViewById(R.id.my_recycler_view);
/*if (toolbar != null) {
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Android Versions");
}*/
final String[] versions = {"Alpha", "Beta", "CupCake", "Donut",
"Eclair", "Froyo", "Gingerbread", "Honeycomb",
"Ice Cream Sandwitch", "JellyBean", "KitKat", "LollyPop"};
final int[] icons = {R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.donut, R.drawable.eclair, R.drawable.froyo, R.drawable.gingerbread, R.drawable.honeycomb, R.drawable.icecream_sandwhich, R.drawable.jellybean, R.drawable.kitkat, R.drawable.lollipop};
os_versions = new ArrayList<FeddProperties>();
for (int i = 0; i < versions.length; i++) {
FeddProperties feed = new FeddProperties();
feed.setTitle(versions[i]);
feed.setThumbnail(icons[i]);
os_versions.add(feed);
}
recyclerView.setHasFixedSize(true);
// ListView
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
//Grid View
// recyclerView.setLayoutManager(new GridLayoutManager(this,2,1,false));
//StaggeredGridView
// recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2,1));
// create an Object for Adapter
mAdapter = new CardViewDataAdapter(os_versions);
// set the adapter object to the Recyclerview
recyclerView.setAdapter(mAdapter);
}
/* #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_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) {
return true;
}
return super.onOptionsItemSelected(item);
}*/
}
In MainActivity.java, you declared
import android.support.v4.app.Fragment
Import the same type of Fragment in CardViewFragment.java instead of
import android.app.Fragment;
so that it's clear that the same type of Fragment is being used in both pieces of code.
sorry I'm fairly new to android so I seem to keep getting stuck on the simplest things.
I had two projects I had completed for a class. One was a simple To Do List and another that allowed different fragments to be used depending on whether you are in portrait or landscape mode. both worked but when trying to combine the two I get an error when put my To Do activity in the fragment if I extend Fragment (findByViews and setContentView dont work.
I can replace Fragment with FragmentActivity which fixes this but then my MainActivity.java's fragmentTransaction.replace(android.R.id.content, pm_fragment); gets an error saying:
"replace (int, android.app.Fragment) in FragmentTransaction cannot be applied to (int, com.android.MyFragmentsTodo.PM_Fragment)"
Can anyone tell me what I can do to make this work? I have a test tomorrow and I'm worried the lecturer might want us to mix an activity with fragments.
Any help would be greatly appreciated.
MainActivity.java
package com.android.myfragmentstodo;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.res.Configuration;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends ActionBarActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Configuration config = getResources().getConfiguration();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
//check device orientation and act upon it
if(config.orientation == Configuration.ORIENTATION_LANDSCAPE){
// If orientation is landscape then
LM_Fragment ls_fragment = new LM_Fragment();
fragmentTransaction.replace(android.R.id.content, ls_fragment);
}else{
// If orientation is portrait then
PM_Fragment pm_fragment = new PM_Fragment();
fragmentTransaction.replace(android.R.id.content, pm_fragment);
}
//apply (commit) the changes
fragmentTransaction.commit();
}
#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_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) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
PM_Fragment.java
package com.android.myfragmentstodo;
import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
/**
* Created by Malan on 4/20/2015.
*/
public class PM_Fragment extends android.support.v4.app.Fragment {
private ArrayList<String> items;
private ArrayAdapter<String> adapter;
private ListView listView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedinstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.todoItems);
items = new ArrayList<String>();
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items);
listView.setAdapter(adapter);
Button button = (Button) findViewById(R.id.btnAddItem);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
EditText editText = (EditText) findViewById(R.id.todoEdit);
String itemText = editText.getText().toString();
adapter.add(itemText);
editText.setText("");
Toast toast = Toast.makeText(getApplicationContext(), "Item Added", Toast.LENGTH_SHORT);
toast.show();
}
});
setupListViewListener();
return inflater.inflate(R.layout.lm_fragment, container, false);
}
private void setupListViewListener() {
listView.setOnItemLongClickListener(
new AdapterView.OnItemLongClickListener(){
#Override
public boolean onItemLongClick(AdapterView<?> av,
View item, int pos, long id){
items.remove(pos);
adapter.notifyDataSetChanged();
return true;
}
});
}
#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_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) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void AddItem(View view) {
EditText editText = (EditText) findViewById(R.id.todoEdit);
String itemText = editText.getText().toString();
adapter.add(itemText);
editText.setText("");
}
}
OK i have figured out how to fix the issue. One must keep extending Fragment but when doing using findViewById one must use:
rootView = inflater.inflate(R.layout.pm_fragment, container, false);
and then precede all findViewById's with rootView like this:
listView = (ListView) rootView.findViewById(R.id.todoItems);
Whenever "this" is used instead use "getActivity()" for example:
adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, items);
when using getApplicationContext you must use getActivity().getApplicationContext() for example:
Toast toast = Toast.makeText(getActivity().getApplicationContext(), "Item Added", Toast.LENGTH_SHORT);
in the end my PM_Fragment is altered to look like this:
PM_Fragment.java
package com.android.myfragmentstodo;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
/**
* Created by Malan on 4/20/2015.
*/
public class PM_Fragment extends Fragment {
private ArrayList<String> items;
private ArrayAdapter<String> adapter;
private ListView listView;
View rootView;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedinstanceState){
rootView = inflater.inflate(R.layout.pm_fragment, container, false);
listView = (ListView) rootView.findViewById(R.id.todoItems);
items = new ArrayList<String>();
adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, items);
listView.setAdapter(adapter);
Button button = (Button) rootView.findViewById(R.id.btnAddItem);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
EditText editText = (EditText) rootView.findViewById(R.id.todoEdit);
String itemText = editText.getText().toString();
adapter.add(itemText);
editText.setText("");
Toast toast = Toast.makeText(getActivity().getApplicationContext(), "Item Added", Toast.LENGTH_SHORT);
toast.show();
}
});
setupListViewListener();
return rootView;
}
private void setupListViewListener() {
listView.setOnItemLongClickListener(
new AdapterView.OnItemLongClickListener(){
#Override
public boolean onItemLongClick(AdapterView<?> av,
View item, int pos, long id){
items.remove(pos);
adapter.notifyDataSetChanged();
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) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void AddItem(View view) {
EditText editText = (EditText) rootView.findViewById(R.id.todoEdit);
String itemText = editText.getText().toString();
adapter.add(itemText);
editText.setText("");
}
}