I am trying to call a List fragment from fragment activity, I m getting null pointer exception.Here is my code,
public class SampleEvents extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sample_events);
FragmentManager fm = getFragmentManager();
Fragment fragment = fm.findFragmentById(R.id.fragment_content);
if (fragment == null) {
FragmentTransaction ft = fm.beginTransaction();
ft.add(R.id.fragment_content, new EventsList());
ft.commit();
}
}
Layout of fragment activity
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/fragment_content"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
Layout of the fragment event_list
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
android:orientation="vertical" >
<TextView
android:id="#+id/empty_TV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:textColor="#0c2c0c"
android:text="No Announcements Found"
android:textStyle="bold"
android:textSize="20sp" />
<ListView
android:id="#+id/events_list"
android:padding="10dip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
</ListView>
</RelativeLayout>
Fragment class
public class EventsList extends ListFragment implements
android.widget.AdapterView.OnItemClickListener{
View rootView;
static SharedPreferences sPrefs;
private NetWorkConnection nc;
private BaseAlerts alert;
private ListView events_listview;
private TextView emptyTV;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.events_list, container, false);
initUI();
uiListener();
return rootView;
}
Whats wrong with my code?Can someone help?
The log cat
06-10 19:22:08.248: E/AndroidRuntime(1009): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ie.minoritybussiness/com.ie.minoritybussiness.dashboard.SampleEvents}: java.lang.RuntimeException: Content has view with id attribute 'android.R.id.list' that is not a ListView class
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.ActivityThread.access$600(ActivityThread.java:130)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.os.Handler.dispatchMessage(Handler.java:99)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.os.Looper.loop(Looper.java:137)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.ActivityThread.main(ActivityThread.java:4745)
06-10 19:22:08.248: E/AndroidRuntime(1009): at java.lang.reflect.Method.invokeNative(Native Method)
06-10 19:22:08.248: E/AndroidRuntime(1009): at java.lang.reflect.Method.invoke(Method.java:511)
06-10 19:22:08.248: E/AndroidRuntime(1009): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
06-10 19:22:08.248: E/AndroidRuntime(1009): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
06-10 19:22:08.248: E/AndroidRuntime(1009): at dalvik.system.NativeStart.main(Native Method)
06-10 19:22:08.248: E/AndroidRuntime(1009): Caused by: java.lang.RuntimeException: Content has view with id attribute 'android.R.id.list' that is not a ListView class
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.ListFragment.ensureList(ListFragment.java:402)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.ListFragment.onViewCreated(ListFragment.java:203)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:843)
06-10 19:22:08.248: E/AndroidRuntime(1009): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1035)
Content has view with id attribute 'android.R.id.list' that is not a ListView class
That looks like your issue. There are 2 reasons I can think of for this to be occuring.
You are giving the android id to a non-list view. Check out your XML files for anywhere you are using #android:id/list as an id for a view. Rename it to something else.
You are using a ListFragment/ListActivity and are not defining a view with #android:id/list as the id. These classes require that identifier. See this Stack Overflow post for some more details.
Put:
FragmentManager fragmentManager = getSupportFragmentManager();
instead of:
FragmentManager fm = getFragmentManager();
Edit:
If you are not using support library than this is probably not the reason for exception. I will give you example how do i do it:
FragmentManager fragmentManager = getSupportFragmentManager();
Fragment fragment = (ListFragment) fragmentManager
.findFragmentByTag("List");
if (fragment != null) {
fragmentManager.beginTransaction()
.add(R.id.fragment, fragment, "List").addToBackStack("List")
.commit();
}
So, i am not using findFragmentById. I am using findFragmentTag and when i replace (or add) fragment, i put a tag ("List"). ListFragment is custom fragment i created.
Related
I have a fragment, and I want to click on a button in the fragment to open a corresponding Activity that also hosts a fragment.
I am trying to test how the Activity appears (after button click) and am receiving what appears to be an inflation error. Here is the first fragment containing the button to view the next fragment:
HomePollsFragment.Java
mLatestTestButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent latestActivity = new Intent(getActivity().getApplicationContext(), LatestActivity.class);
startActivity(latestActivity);
}
});
And then here is the code for the activity that is opened on button click:
public class LatestActivity extends AppCompatActivity implements LatestFragment.OnFragmentInteractionListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_latest);
// Check that the activity is using the layout version with
// the fragment_container FrameLayout
if (findViewById(R.id.latest_fragment_container) != null) {
// However, if we're being restored from a previous state,
// then we don't need to do anything and should return or else
// we could end up with overlapping fragments.
if (savedInstanceState != null) {
return;
}
// Create a new Fragment to be placed in the activity layout
LatestFragment latestFragment = new LatestFragment();
// In case this activity was started with special instructions from an
// Intent, pass the Intent's extras to the fragment as arguments
latestFragment.setArguments(getIntent().getExtras());
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.latest_fragment_container, latestFragment).commit();
}
}
#Override
public void onFragmentInteraction(Uri uri) {
}
}
The error I am receiving is below and appears to be related to the following line:
setContentView(R.layout.activity_latest);
Error:
06-27 22:35:47.787 4252-4252/com.sourcey.materialloginexample E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sourcey.materialloginexample/com.troychuinard.fanpolls.LatestActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.troychuinard.fanpolls.LatestActivity.onCreate(LatestActivity.java:14)
at android.app.Activity.performCreate(Activity.java:5133)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException: name == null
at java.lang.VMClassLoader.findLoadedClass(Native Method)
at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:491)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.support.v4.app.Fragment.isSupportFragmentClass(Fragment.java:454)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2252)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:356)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:79)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.troychuinard.fanpolls.LatestActivity.onCreate(LatestActivity.java:14)
at android.app.Activity.performCreate(Activity.java:5133)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
activity_latest.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">
<fragment
android:id="#+id/latest_fragment_container"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp" />
The error is telling you that you have no name attribute on the <fragment> element specifying its class.
NullPointerException: name == null
However, it looks like you mean to load the Fragment yourself, so you don't want a <fragment> element. Instead, you want a ViewGroup that will hold the Fragment after the dynamic FragmentTransaction. Change your <fragment> to a <FrameLayout>.
That because you have a wrong on your activity_latest.xml. You tried to add your LatestFragment to Fragment. You can add fragment into ViewGroup like FrameLayout. Change your code like here.
<?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">
<FrameLayout
android:id="#+id/latest_fragment_container"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp" />
Hello i'm struggling with these error for past of couple of hours to no avail. I am trying to pass data from my activity to the fragment but not succeeding in doing so. My guess it's complaining about my <fragment> in activity_second.xml file. My guess might be wrong. Has anyone encountered this error? But i don't know how to resolve this error.Would some please guide in me what i did wrong. Below is my code:
first_fragment.xml:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/fragmentPic" >
<TextView
android:id="#+id/textName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/users_FirstName"
android:textSize="#dimen/font_size"
android:layout_gravity="center_horizontal"/>
<com.facebook.login.widget.ProfilePictureView
android:id="#+id/profilePic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
>
</com.facebook.login.widget.ProfilePictureView>
</LinearLayout>
FirstFragment.java:
public class FirstFragment extends Fragment {
private ProfilePictureView profilePictureView;
private TextView textView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// return super.onCreateView(inflater, container, savedInstanceState);
View rootView = inflater.inflate(R.layout.first_fragment, container, false);
Bundle bundle = new Bundle();
bundle = this.getArguments();
String profileId = bundle.getString("profileId"); //complains here and returns null
TextView textView = (TextView)rootView.findViewById(R.id.textName);
textView.setText(bundle.getString("names"));
return rootView;
}
}
activity_second.xml:
<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"
android:background="#color/backgroundColor"
>
<include android:id="#+id/toolBar"
layout="#layout/toolbar" />
<android.support.v4.widget.DrawerLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/drawer">
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout="#layout/first_fragment"
class="edu.sjsu.cmpe277.termproject.Fragments.FirstFragment"
android:id="#+id/fragment1"
/>
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
secondActivity.java:
public class secondActivity extends AppCompatActivity {
private Intent intent;
private Toolbar toolbar;
private String firstName, profileId;
private FirstFragment firstFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
intent = getIntent();
firstName = intent.getStringExtra("firstName");
profileId = intent.getStringExtra("Id");
toolbar = (Toolbar)findViewById(R.id.toolBar);
setSupportActionBar(toolbar);
toolbar.setLogo(R.drawable.ic_menu_image);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
firstFragment = new FirstFragment();
Bundle bundle = new Bundle();
bundle.putString("names", firstName);
bundle.putString("profileId", profileId);
firstFragment.setArguments(bundle);
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(R.id.drawer, firstFragment,"newFrag").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_second, 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.
switch(item.getItemId()) {
case android.R.id.home:
Intent homeIntent = new Intent(this, secondActivity.class );
homeIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(homeIntent);
}
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
And this error below:
29 01:50:11.402 13536-13536/edu.sjsu.cmpe277.termproject E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: edu.sjsu.cmpe277.termproject, PID: 13536
java.lang.RuntimeException: Unable to start activity ComponentInfo{edu.sjsu.cmpe277.termproject/edu.sjsu.cmpe277.termproject.secondActivity}: android.view.InflateException: Binary XML file line #82: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2693)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
Caused by: android.view.InflateException: Binary XML file line #82: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:770)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:813)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:511)
at android.view.LayoutInflater.inflate(LayoutInflater.java:415)
at android.view.LayoutInflater.inflate(LayoutInflater.java:366)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:255)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at edu.sjsu.cmpe277.termproject.secondActivity.onCreate(secondActivity.java:43)
at android.app.Activity.performCreate(Activity.java:6289)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference
at edu.sjsu.cmpe277.termproject.Fragments.FirstFragment.onCreateView(FirstFragment.java:44)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:995)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1185)
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1287)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2243)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:278)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:78)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:740)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:813)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:511)
at android.view.LayoutInflater.inflate(LayoutInflater.java:415)
at android.view.LayoutInflater.inflate(LayoutInflater.java:366)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:255)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at edu.sjsu.cmpe277.termproject.secondActivity.onCreate(secondActivity.java:43)
at android.app.Activity.performCreate(Activity.java:6289)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
Get rid of
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout="#layout/first_fragment"
class="edu.sjsu.cmpe277.termproject.Fragments.FirstFragment"
android:id="#+id/fragment1"
/>
and use only the explicitly transaction you are using in your Activity. You can't pass a Bundle, declaring a Fragment in the layout, and try to accessing it, is making your app crash
In your activity_second.xml file, change:
class="edu.sjsu.cmpe277.termproject.Fragments.FirstFragment"
to
android:name="edu.sjsu.cmpe277.termproject.Fragments.FirstFragment"
That's the correct prefix to use.
I am trying a fragment app as per a tutorial and getting following error:
06-28 04:21:47.118: D/AndroidRuntime(1491): Shutting down VM
06-28 04:21:47.128: W/dalvikvm(1491): threadid=1: thread exiting with uncaught exception (group=0xb4af7b90)
06-28 04:21:47.158: E/AndroidRuntime(1491): FATAL EXCEPTION: main
06-28 04:21:47.158: E/AndroidRuntime(1491): Process: com.example.fragmentapp, PID: 1491
06-28 04:21:47.158: E/AndroidRuntime(1491): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.fragmentapp/com.example.fragmentapp.MainActivity}: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2176)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.ActivityThread.access$700(ActivityThread.java:135)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.os.Handler.dispatchMessage(Handler.java:102)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.os.Looper.loop(Looper.java:137)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.ActivityThread.main(ActivityThread.java:4998)
06-28 04:21:47.158: E/AndroidRuntime(1491): at java.lang.reflect.Method.invokeNative(Native Method)
06-28 04:21:47.158: E/AndroidRuntime(1491): at java.lang.reflect.Method.invoke(Method.java:515)
06-28 04:21:47.158: E/AndroidRuntime(1491): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
06-28 04:21:47.158: E/AndroidRuntime(1491): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
06-28 04:21:47.158: E/AndroidRuntime(1491): at dalvik.system.NativeStart.main(Native Method)
06-28 04:21:47.158: E/AndroidRuntime(1491): Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
06-28 04:21:47.158: E/AndroidRuntime(1491): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Activity.setContentView(Activity.java:1928)
06-28 04:21:47.158: E/AndroidRuntime(1491): at com.example.fragmentapp.MainActivity.onCreate(MainActivity.java:13)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Activity.performCreate(Activity.java:5243)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2140)
06-28 04:21:47.158: E/AndroidRuntime(1491): ... 11 more
06-28 04:21:47.158: E/AndroidRuntime(1491): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.pavan.fragmentdemo.MyListFragment: make sure class name exists, is public, and has an empty constructor that is public
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Fragment.instantiate(Fragment.java:597)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Fragment.instantiate(Fragment.java:561)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Activity.onCreateView(Activity.java:4777)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
06-28 04:21:47.158: E/AndroidRuntime(1491): ... 21 more
06-28 04:21:47.158: E/AndroidRuntime(1491): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.pavan.fragmentdemo.MyListFragment" on path: DexPathList[[zip file "/data/app/com.example.fragmentapp-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.fragmentapp-2, /system/lib]]
06-28 04:21:47.158: E/AndroidRuntime(1491): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
06-28 04:21:47.158: E/AndroidRuntime(1491): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
06-28 04:21:47.158: E/AndroidRuntime(1491): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
06-28 04:21:47.158: E/AndroidRuntime(1491): at android.app.Fragment.instantiate(Fragment.java:583)
06-28 04:21:47.158: E/AndroidRuntime(1491): ... 24 more
The code is as follows:
Main Activity.java
package com.example.fragmentapp;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
public class MainActivity extends Activity implements
ListFragment.Communicator {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void Message(String OS_Name) {
DetailFragment detailfragment = (DetailFragment) getFragmentManager()
.findFragmentById(R.id.detail_Fragment);
if (detailfragment != null && detailfragment.isInLayout()) {
detailfragment.setText(OS_Name);
}
else {
Intent intent = new Intent(getApplicationContext(),
DetailActivity.class);
Bundle extras = new Bundle();
extras.putString(DetailActivity.os_name, OS_Name);
intent.putExtras(extras);
startActivity(intent);
}
}
}
Code of DetailActivity.java
package com.example.fragmentapp;
import android.app.Activity;
import android.content.res.Configuration;
import android.os.Bundle;
public class DetailActivity extends Activity {
public static String os_name = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
finish();
return;
}
setContentView(R.layout.detail_activity);
Bundle extras = getIntent().getExtras();
if (extras != null) {
String name = extras.getString(os_name);
DetailFragment detailFragment = (DetailFragment) getFragmentManager()
.findFragmentById(R.id.detailFragment);
detailFragment.setText(name);
}
}
}
Code of DetailFragment.java
package com.example.fragmentapp;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class DetailFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.detail_fragment, container, false);
return view;
}
// we call this method when button from listfragment is clicked
public void setText(String item) {
TextView view = (TextView) getView().findViewById(R.id.display_tv);
view.setText(item);
}
}
Code of ListFragment.java
package com.example.fragmentapp;
import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
public class ListFragment extends Fragment implements OnClickListener {
private Communicator communicator;
Button android_btn, ios_btn, windows_btn;
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (activity instanceof Communicator) {
communicator = (Communicator) activity;
}
else {
throw new
ClassCastException(activity.toString()
+ " must implemenet MyListFragment.Communicator");
}
}
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View view =
inflater.inflate(R.layout.list_fragment, container, false);
// Initialize Views android_btn = (Button)
view.findViewById(R.id.android_btn_id);
ios_btn = (Button)
view.findViewById(R.id.ios_btn_id);
windows_btn = (Button)
view.findViewById(R.id.windows_btn_id);
// set on click Listeners for buttons
android_btn.setOnClickListener(this);
ios_btn.setOnClickListener(this);
windows_btn.setOnClickListener(this);
return view;
}
//Create Interface
public interface Communicator {
public void Message(String OS_Name);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.android_btn_id:
updateFragment("Android");
break;
case R.id.ios_btn_id:
updateFragment("IOS");
break;
case R.id.windows_btn_id:
updateFragment("Windows");
break;
}
}
private void updateFragment(String OS_Name) {
communicator.Message(OS_Name);
}
}
In Layout Folder
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<fragment
android:id="#+id/list_Fragment"
android:layout_width="0sp"
android:layout_height="match_parent"
android:layout_weight="1"
class="com.pavan.fragmentdemo.MyListFragment" >
</fragment>
<fragment
android:id="#+id/detail_Fragment"
android:layout_width="0sp"
android:layout_height="match_parent"
android:layout_weight="2"
class="com.pavan.fragmentdemo.DetailFragment" >
</fragment>
</LinearLayout>
Code of detail_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFF99"
android:orientation="vertical"
android:padding="20dp" >
<TextView
android:id="#+id/display_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textSize="40sp" />
</LinearLayout>
code of list_fragment.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#CCFF99"
android:orientation="vertical"
android:padding="5dp" >
<Button
android:id="#+id/android_btn_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Android" />
<Button
android:id="#+id/ios_btn_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IOS" />
<Button
android:id="#+id/windows_btn_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Windows" />
</LinearLayout>
In layout-port
code activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<fragment
android:id="#+id/list_Fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
class="com.pavan.fragmentdemo.MyListFragment" >
</fragment>
</LinearLayout>
Code of detail_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<fragment
android:id="#+id/detailFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.pavan.fragmentdemo.DetailFragment" />
</LinearLayout>
You have different names of fragments:
in xml com.pavan.fragmentdemo.MyListFragment
in java com.example.fragmentapp.MyListFragment
fix package names
I am trying to open a fragment from FragmentActivity. I have implmented NavigationDrawer. From Main Activity I opened FragmentActivity (LINK_New.java) and from there I want to open a Fragment (LINK_Create.java).
The main Navigation DrawList has this:
<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" >
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView
android:id="#+id/left_drawer"
android:layout_width="250dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#color/list_background"
android:choiceMode="singleChoice"
android:divider="#color/list_divider"
android:dividerHeight="1dp"
android:listSelector="#drawable/drawer_list_selector" />
</android.support.v4.widget.DrawerLayout>
FRAME_CONTAINER IS ONLY AVAILABLE IN THE ABOVE XML.
XML for LINK_New & LINK_Create: it is just Linear Layout with TextBox and Image stuff in it.
I am trying this:
fragment = new LINK_Create();
FragmentManager fragmentManager2 = getSupportFragmentManager();
fragmentManager2.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
For which I am getting below error:
04-07 13:36:19.142: E/AndroidRuntime(20620): FATAL EXCEPTION: main
04-07 13:36:19.142: E/AndroidRuntime(20620): Process: com.ylg.LINK, PID: 20620
04-07 13:36:19.142: E/AndroidRuntime(20620): java.lang.IllegalArgumentException: No view found for id 0x7f0b006b (com.ylg.LINK:id/frame_container) for fragment LINK_Create{3093cc8e #0 id=0x7f0b006b}
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:934)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1121)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1484)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:450)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.os.Handler.handleCallback(Handler.java:739)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.os.Handler.dispatchMessage(Handler.java:95)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.os.Looper.loop(Looper.java:135)
04-07 13:36:19.142: E/AndroidRuntime(20620): at android.app.ActivityThread.main(ActivityThread.java:5254)
04-07 13:36:19.142: E/AndroidRuntime(20620): at java.lang.reflect.Method.invoke(Native Method)
04-07 13:36:19.142: E/AndroidRuntime(20620): at java.lang.reflect.Method.invoke(Method.java:372)
04-07 13:36:19.142: E/AndroidRuntime(20620): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
04-07 13:36:19.142: E/AndroidRuntime(20620): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
My LINK_New FRAGMENTACTIVITY has the following:
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
ActionBar actionBar = getActionBar();
actionBar.setDisplayOptions(actionBar.getDisplayOptions() | ActionBar.DISPLAY_SHOW_CUSTOM);
ImageView imageView = new ImageView(actionBar.getThemedContext());
imageView.setScaleType(ImageView.ScaleType.CENTER);
imageView.setImageResource(R.drawable.logoactionbar);
ActionBar.LayoutParams layoutParams = new ActionBar.LayoutParams(ActionBar.LayoutParams.WRAP_CONTENT, ActionBar.LayoutParams.WRAP_CONTENT, Gravity.END | Gravity.CENTER_VERTICAL);
layoutParams.rightMargin = 20;
imageView.setLayoutParams(layoutParams);
actionBar.setCustomView(imageView);
actionBar.setTitle(getResources().getString(R.string.account_anew));
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
getActionBar().setIcon(android.R.color.transparent);
getActionBar().setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.backgroundcolor)));
setContentView(R.layout.link_new)
}
On BackPressed inside LINK_New.java I am calling the fragment:
#Override
public void onBackPressed()
{
super.onBackPressed();
fragment = new LINK_Create();
FragmentManager fragmentManager2 = getSupportFragmentManager();
fragmentManager2.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
}
I tried all the solutions that are available on SO I am not able to figure out a solution for the above issue.
Please help!
Thanks!
You are using the fragment's fragment manager, instead of the Activity's. So, use the Activity's instead.
FragmentActivity:
public void replaceWith(Fragment fragment) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.frame_container, fragment)
.commit();
}
Fragment:
#Override
public void onBackPressed()
{
((YourFragmentActivity)getActivity()).replaceWith(new LINK_Create());
}
This is the quick solution to the problem, anyways.
Normally I'd use Otto and send an event
FragmentActivity:
#Subscribe
public void onLinkFragmentBackPressed(LINK_New.BackPressedEvent e) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.frame_container, new LINK_Create())
.commit();
}
Fragment:
#Override
public void onBackPressed() {
SingletonBus.INSTANCE.post(new BackPressedEvent());
}
I'm building my first Android app and I've consulted quite some tutorials and stackoverflow posts, but I can't seem to find the proper fix for this problem.
I've been following YouTube tutorials from TheNewBoston and Derek Banas, as well as some written tutorials.
My app runs as it should when starting the app (being in Portrait mode). When I swap it to landscape, it still works fine. However when I rotate it back to portrait, the app crashes with the following error:
04-12 23:42:12.331 28004-28004/nl.avans.mbd2.android.gideon.van.david.multipanefragment E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: nl.avans.mbd2.android.gideon.van.david.multipanefragment, PID: 28004
java.lang.RuntimeException: Unable to start activity ComponentInfo{nl.avans.mbd2.android.gideon.van.david.multipanefragment/nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4054)
at android.app.ActivityThread.access$1000(ActivityThread.java:175)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1314)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5602)
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:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:240)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainActivity.onCreate(MainActivity.java:18)
at android.app.Activity.performCreate(Activity.java:5451)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2377)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4054)
at android.app.ActivityThread.access$1000(ActivityThread.java:175)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1314)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5602)
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:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: Fragment nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainPanelFragment did not create a view.
at android.app.Activity.onCreateView(Activity.java:5020)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:695)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:240)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainActivity.onCreate(MainActivity.java:18)
at android.app.Activity.performCreate(Activity.java:5451)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2377)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4054)
at android.app.ActivityThread.access$1000(ActivityThread.java:175)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1314)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5602)
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:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
The actual error being:
java.lang.RuntimeException: Unable to start activity ComponentInfo{nl.avans.mbd2.android.gideon.van.david.multipanefragment/nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
Caused by: java.lang.IllegalStateException: Fragment nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainPanelFragment did not create a view.
My MainActivity looks like this:
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int screenOrientation = getResources().getConfiguration().orientation;
if (screenOrientation == Configuration.ORIENTATION_PORTRAIT) {
hideSidePanel();
}
}
private void hideSidePanel() {
View detailPane = findViewById(R.id.detail_panel);
if(detailPane.getVisibility() == View.VISIBLE) {
detailPane.setVisibility(View.GONE);
}
}
}
MainPanelFragment:
public class MainPanelFragment extends ListFragment {
boolean orientation;
int currentListViewItem;
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
ArrayAdapter<String> connectArrayToListView = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_activated_1, API.dummyData);
setListAdapter(connectArrayToListView);
orientation = getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
if (savedInstanceState != null) {
currentListViewItem = savedInstanceState.getInt("curChoice", 0);
}
if (orientation) {
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
showDetails(currentListViewItem);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
return inflater.inflate(R.layout.fragment_main_panel, container, false);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("curChoice", currentListViewItem);
}
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
showDetails(position);
// super.onListItemClick(l, v, position, id);
}
void showDetails(int kaart) {
currentListViewItem = kaart;
if (orientation) {
getListView().setItemChecked(kaart, true);
DetailPanelFragment details = (DetailPanelFragment) getFragmentManager().findFragmentById(R.id.detail_panel);
if (details == null || details.getShowIndex() == -1) {
details = DetailPanelFragment.newInstance(kaart);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.main_panel, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
} else {
Intent intent = new Intent();
intent.setClass(getActivity(), DetailsActivity.class);
intent.putExtra("index", kaart);
startActivity(intent);
}
}
}
activity_main.xml:
<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:animateLayoutChanges="true"
tools:context=".MainActivity">
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:id="#+id/main_panel"
android:layout_alignParentRight="true"
class="nl.avans.mbd2.android.gideon.van.david.multipanefragment.MainPanelFragment"/>
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="#+id/detail_panel"
android:layout_alignParentLeft="true"
class="nl.avans.mbd2.android.gideon.van.david.multipanefragment.DetailPanelFragment"/>
</LinearLayout>
fragment_detail_panel.xml:
<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:background="#android:color/holo_blue_bright"
android:layout_gravity="top|center"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Detail panel"
android:textColor="#android:color/white"
android:textStyle="bold"
android:id="#+id/kaartenListViewDetail"
/>
</LinearLayout>
fragment_main_panel.xml:
<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:background="#android:color/holo_red_dark"
android:layout_gravity="top|center"
android:orientation="vertical">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#android:id/list">
</ListView>
</LinearLayout>
I also have a folder in /res named layout-land. It contains an activity_main.xml file which is exactly identical to the one posted above.
I've seen similiar questions like this one but it seems that this situation is not (enough) the same to find a valid answer.