I have tried the following code,
try {
final Activity activity = ctx;
FragmentTransaction ft = activity.getFragmentManager().beginTransaction();
android.app.Fragment prev = activity.getFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
ft.remove(prev);
}
DialogServiceFailed newFragment = DialogServiceFailed.newInstance(pageName, onServiceFailed);
newFragment.show(ft, "dialog");
ft.addToBackStack(null);
ft.commitAllowingStateLoss();
} catch (ClassCastException e) {
Log.d("Log", "Can't get the fragment manager with this");
}
But I get the following exception and my app crashes.
java.lang.IllegalStateException: commit already called
at android.app.BackStackRecord.commitInternal(BackStackRecord.java:582)
at android.app.BackStackRecord.commitAllowingStateLoss(BackStackRecord.java:578)
at com.brightspot.extrain5psim.model.APIRequestHandler.loadServiceFailedDialog(APIRequestHandler.java:99)
at com.brightspot.extrain5psim.view.fragments.LoginFragment.setOnAsyncTaskCompleted(LoginFragment.java:201)
at com.brightspot.extrain5psim.model.APIRequestHandler.onPostExecute(APIRequestHandler.java:80)
at com.brightspot.extrain5psim.model.APIRequestHandler.onPostExecute(APIRequestHandler.java:17)
at android.os.AsyncTask.finish(AsyncTask.java:631)
at android.os.AsyncTask.access$600(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5317)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)
newFragment.show(ft, "dialog")
show calls internally commit. So you probably want get rid of
ft.commitAllowingStateLoss();
or you can get rid of
newFragment.show(ft, "dialog");
add call
ft.add(newFragment, "dialog");
ft.commitAllowingStateLoss();
Edit
this is what DialogFragment's show() looks like
public int show(FragmentTransaction transaction, String tag) {
mDismissed = false;
mShownByMe = true;
transaction.add(this, tag);
mViewDestroyed = false;
mBackStackId = transaction.commit();
return mBackStackId;
}
Related
I have a login fragment and want to replace the fragment after successful login.
I tried to replace the fragment inside the login fragment.
First I tried to call the following code inside the fragment (onActivityCreated,onCreateView,onStart)
getSupportFragmentManager().beginTransaction()
.replace(R.id.mainframelayout, ReservationFragment.newInstance())
.commitNow();
My second way was to try to call a activity method:
public void replaceFragments(Class fragmentClass) {
Fragment fragment = null;
try {
fragment = (Fragment) fragmentClass.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
getSupportFragmentManager().beginTransaction()
.replace(R.id.mainframelayout, fragment)
.commitNow();
}
Activity
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.replace(R.id.mainframelayout, LoginFragment.newInstance())
.commitNow();
}
}
public void replaceFragments(Class fragmentClass) {
Fragment fragment = null;
try {
fragment = (Fragment) fragmentClass.newInstance();
} catch (Exception e) {
e.printStackTrace();
}
getSupportFragmentManager().beginTransaction()
.replace(R.id.mainframelayout, fragment)
.commitNow();
}
}
Activity xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/mainframelayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
</FrameLayout>
The following error always came up:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.retrofit, PID: 15872
java.lang.IllegalArgumentException: No view found for id 0x7f07007c (com.example.retrofit:id/mainframelayout) for fragment
ReservationFragment{6e639e1} (59264633-2704-48d9-872d-551ef1142b68)
id=0x7f07007c}
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:305)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1185)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1354)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1432)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1495)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:447)
at androidx.fragment.app.FragmentManager.executeOps(FragmentManager.java:2167)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1990)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1945)
at androidx.fragment.app.FragmentManager.execSingleAction(FragmentManager.java:1816)
at androidx.fragment.app.BackStackRecord.commitNow(BackStackRecord.java:297)
at com.example.retrofit.MainActivity.replaceFragments(MainActivity.java:33)
at com.example.retrofit.ui.login.LoginFragment$1.onClick(LoginFragment.java:54)
at android.view.View.performClick(View.java:6597)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
I/Process: Sending signal. PID: 15872 SIG: 9
I've tried many things, but I haven't found a solution.
I understand that the fragment may not have access to the activity xml, but why the second way not work I dont understand.
In android versions earlier than Lollipop, I keep getting the VerifyError while trying to instantiate a fragment, leading to an app crash. Can someone explain to me the cause of this error?
12-19 17:46:52.510 28238-28238/com.greeblu.tootl2 E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.greeblu.tootl2, PID: 28238
java.lang.VerifyError: com/greeblu/tootl2/fragment/ProfileGridFragment
at com.greeblu.tootl2.activity.ProfileActivity.launchGridFragment(ProfileActivity.java:289)
at com.greeblu.tootl2.fragment.ProfileOverlayFragment$3.onClick(ProfileOverlayFragment.java:123)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18439)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5034)
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:795)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611)
at dalvik.system.NativeStart.main(Native Method)
This is how I'm calling the fragment for older android versions:
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.profileContainer, new ProfileGridFragment(),fragmentTag); //Replaces the Fragment C previously in the right_container with a new Fragment B
ft.commit();
Edit:
The code for the onClick call is as follows. It is called from another fragment in the same activity
picContainer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
((ProfileActivity) getActivity()).launchGridFragment(overlayDp, "all");
}
});
I've encountered this exact error because I had a try-catch block with exception class that is unavailable on old android versions. The block wasn't even in the constructor, it was in one of the onClick methods so the code wasn't even executed, but nevertheless app was always crashing with VerifyError as soon as I was trying to create the fragment.
Solver it by changing clause block with instanceof check:
Crashing:
try {
...
} catch (FileUriExposedException e) {
...
}
Works ok:
try {
...
} catch (Exception e) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && e instanceof FileUriExposedException) {
...
}
}
Are you using the support Fragment class from android.support.v4.app.Fragment? If so you need to be calling
getSupportFragmentManager()
instead of
getFragmentManager()
Note that the Fragment class from android.app.Fragment is now deprecated.
I'm trying to start a third party app(here is Launcher) by using this code:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
ResolveInfo resolveInfo = getPackageManager().resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
String currentHomePackage = resolveInfo.activityInfo.packageName;
openApp(getApplicationContext(),currentHomePackage);
openApp:
public static boolean openApp(Context context, String packageName) {
PackageManager manager = context.getPackageManager();
try {
Intent i = manager.getLaunchIntentForPackage(packageName);
if (i == null) {
return false;
//throw new PackageManager.NameNotFoundException();
}
i.addCategory(Intent.CATEGORY_LAUNCHER);
context.startActivity(i);
return true;
} catch (Exception e) {
return false;
}
}
but I get a NullPointerException! This code gets my launcher package name correctly, but I can't open it! Help me please and don't get me negative points!
logcat:
07-30 18:59:47.206 16079-16079/ir.whiteapp.keepme E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at ir.whiteapp.keepme.AlertBox.openApp(AlertBox.java:80)
at ir.whiteapp.keepme.AlertBox$1.onClick(AlertBox.java:52)
at android.view.View.performClick(View.java:4204)
at android.view.View$PerformClick.run(View.java:17355)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
There is no requirement that getLaunchIntentForPackage() return anything. Quoting the documentation:
Returns: A fully-qualified Intent that can be used to launch the main activity in the package. Returns null if the package does not contain such an activity, or if packageName is not recognized.
In particular, a home screen implementation does not need a launch Intent (ACTION_MAIN/CATEGORY_LAUNCHER), as normally it is not launched by other home screen implementations.
I want to go from one fragment to another fragment.
First I'm passing some data, then I'm refreshing my adapter and at least I;m going to new fragment.
My Code:
public class TestFragment extends Fragment {
private String horoscope_sign;
private Bundle bundle;
private FragmentItemHoroscopePage itemHoroscope;
private FragmentManager manager;
private FragmentTransaction transaction;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.test_fragment, container, false);
horoscope_sign = getArguments().getString("horoscope_sign");
bundle = new Bundle();
itemHoroscope = new FragmentItemHoroscopePage();
manager = getFragmentManager();
// Resetting adapter
if(FragmentItemHoroscopePage.getAdapter() != null) {
FragmentItemHoroscopePage.getAdapter().notifyDataSetChanged();
}
// Going to another fragment
transaction = manager.beginTransaction();
bundle.putString("horoscope_sign", horoscope_sign);
itemHoroscope.setArguments(bundle);
transaction.replace(R.id.mainContainer, itemHoroscope, "ItemHoroscope");
transaction.addToBackStack("ItemHoroscope");
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
transaction.commit();
return view;
}
}
I'm getting error on checking adapter, and I don't know why. Funny thing is if I putt whole code in OnButtonClick it is working. How can I fix this??
LogCat:
FATAL EXCEPTION: main
10-15 21:40:01.050:
java.lang.IllegalStateException: Recursive entry to executePendingTransactions
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1456)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:482)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.dataSetChanged(ViewPager.java:897)
at android.support.v4.view.ViewPager$PagerObserver.onChanged(ViewPager.java:2824)
at android.database.DataSetObservable.notifyChanged(DataSetObservable.java:37)
at android.support.v4.view.PagerAdapter.notifyDataSetChanged(PagerAdapter.java:276)
at com.kiko.bmgu.crnobelo.horoscope.TestFragment.onCreateView(TestFragment.java:39)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1504)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:942)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1121)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1484)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:450)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4929)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:798)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:565)
at dalvik.system.NativeStart.main(Native Method)
I don't know what is problem, but I put try and catch clause around and it is working now:
try {
if(FragmentItemHoroscopePage.getAdapter() != null) {
System.out.println("REFRESH");
FragmentItemHoroscopePage.getAdapter().notifyDataSetChanged();
}
} catch (Exception e) {
e.printStackTrace();
}
My STACK_TRACE when I came back to FragmentActivity from another activity.
I searched lot for how to solve this, and I found a clue that I need to save state of fragment.
But in that clue article said, when I use FragmentPagerAdapter, I do not need to save state.
So, I confussed. Am I use FragmentPagerAdapter correctly?
Please Help me...
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test20140320/com.example.test20140320.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2308)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2362)
at android.app.ActivityThread.access$700(ActivityThread.java:168)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1329)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5493)
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:1209)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1025)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.example.test20140320.MainActivity_Fragment_Tab_02.<init>(MainActivity_Fragment_Tab_02.java:98)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1130)
at android.support.v4.app.Fragment.instantiate(Fragment.java:402)
at android.support.v4.app.FragmentState.instantiate(Fragment.java:97)
at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1801)
at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:213)
at com.example.test20140320.MainActivity.onCreate(MainActivity.java:47)
at android.app.Activity.performCreate(Activity.java:5372)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
... 11 more
java.lang.NullPointerException
at com.example.test20140320.MainActivity_Fragment_Tab_02.<init>(MainActivity_Fragment_Tab_02.java:98)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1130)
at android.support.v4.app.Fragment.instantiate(Fragment.java:402)
at android.support.v4.app.FragmentState.instantiate(Fragment.java:97)
at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1801)
at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:213)
at com.example.test20140320.MainActivity.onCreate(MainActivity.java:47)
at android.app.Activity.performCreate(Activity.java:5372)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2362)
at android.app.ActivityThread.access$700(ActivityThread.java:168)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1329)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5493)
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:1209)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1025)
at dalvik.system.NativeStart.main(Native Method)
at com.example.test20140320.MainActivity_Fragment_Tab_02.<init>(MainActivity_Fragment_Tab_02.java:98)
My code:
public MainActivity_Fragment_Tab_02()
{
super();
mContext = getActivity().getApplicationContext(); //This is line 98
tab2 = this;
}
I think the cause is at savedInstanceState, but don't know how, and how, and how....
Below is what i use FragmentPagerAdapter.
I think this is the most doubtful part.
public class SectionsPagerAdapter extends FragmentPagerAdapter
{
public SectionsPagerAdapter(FragmentManager fm)
{
super(fm);
}
#Override
public Fragment getItem(int position)
{
// getItem is called to instantiate the fragment for the given page.
// Return a DummySectionFragment (defined as a static inner class
// below) with the page number as its lone argument.
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
switch(position)
{
case 0:
Fragment fragment_tab1 = new MainActivity_Fragment_Tab_02(getApplicationContext());
fragment_tab1.setRetainInstance(true);
return fragment_tab1;
case 1:
Fragment fragment_tab2 = new MainActivity_Fragment_Tab_01(getApplicationContext());
fragment_tab2.setRetainInstance(true);
return fragment_tab2;
case 2:
Fragment fragment_tab3 = new MainActivity_Fragment_Tab_03(getApplicationContext());
fragment_tab3.setRetainInstance(true);
return fragment_tab3;
}
return fragment;
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
Is this code leaky??
Am I use FragmentPagerAdapter correctly? OTL....
How can I fix it....?
Please Help me!
P.S. First create fragmentActivity is successful.
Move
mContext = getActivity().getApplicationContext();
to onAttached or onActivityCreated
The problem with your code is that your activity is crashing some where else and hence you are not able to get activity reference in your fragment class. Go through the stack trace, the entire log, somewhere prior to the log that you have posted here, will be some other exception that is causing the activity to stop.
In order to use activity reference in the fragment class create on mActivity variable in your fragment and before using it check for NP if(mActivity!=null). Initialize mActivity in onAttached method of fragment class
#Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
mActivity = activity;
}