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Android: IllegalStateException throws DialogFragment

I already had this job, when I had only one layout for fragment one (landscape), but now with an additional version of the portrait my application crashes with IllegalStateException in the line switch (v.getId())

the code looks like:

  public void onTextViewClick(View v) { DialogFragment newFragment2 = new existingLessonDialog(); DialogFragment newFragment = new newLessonDialog(); if (v.getTag().equals("stunde")) newFragment2.show(getSupportFragmentManager(), "missiles"); switch (v.getId()) { case R.id.uhrzeit1: index = 0; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit2: index = 1; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit3: index = 2; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit4: index = 3; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit5: index = 4; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit6: index = 5; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit7: index = 6; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit8: index = 7; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit9: index = 8; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit10: index = 9; newFragment.show(getSupportFragmentManager(), "missiles"); break; case R.id.uhrzeit11: index = 10; newFragment.show(getSupportFragmentManager(), "missiles"); break; } }

and

  class newLessonDialog extends DialogFragment { @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); // Get the layout inflater LayoutInflater inflater = getActivity().getLayoutInflater(); // Inflate and set the layout for the dialog // Pass null as the parent view because its going in the dialog layout builder.setView(inflater.inflate(R.layout.new_lesson_dialog, null)) // Add action buttons, .setPositiveButton("Speichern", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { EditText eF = (EditText)getDialog().findViewById(R.id.editFach); fach = eF.getText().toString(); EditText eR = (EditText)getDialog().findViewById(R.id.editRaum); raum = eR.getText().toString(); EditText eL = (EditText)getDialog().findViewById(R.id.editLehrer); lehrer = eL.getText().toString(); if (tag != null) { save(fach, raum, lehrer, tag, index); } else { Toast.makeText(getAppContext(), "Zuerst Wochentag auswählen!", Toast.LENGTH_SHORT); } } }) .setNegativeButton("Abbrechen", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { newLessonDialog.this.getDialog().cancel(); } }); return builder.create(); } public void onStart() { super.onStart(); // This will get the radiogroup RadioGroup rGroup = (RadioGroup)getDialog().findViewById(R.id.radioGroup); // This will get the radiobutton in the radiogroup that is checked RadioButton checkedRadioButton = (RadioButton)rGroup.findViewById(rGroup.getCheckedRadioButtonId()); rGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { public void onCheckedChanged(RadioGroup rGroup, int checkedId) { // This will get the radiobutton that has changed in its check state RadioButton checkedRadioButton = (RadioButton)rGroup.findViewById(checkedId); // This puts the value (true/false) into the variable boolean isChecked = checkedRadioButton.isChecked(); // If the radiobutton that has changed in check state is now checked... if (isChecked) { tag = checkedRadioButton.getText().toString(); } } }); } } class existingLessonDialog extends DialogFragment { @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); // Get the layout inflater LayoutInflater inflater = getActivity().getLayoutInflater(); // Inflate and set the layout for the dialog // Pass null as the parent view because its going in the dialog layout builder.setView(inflater.inflate(R.layout.existing_lesson_dialog, null)) // Add action buttons, .setPositiveButton("Neue HA", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { } }) .setNeutralButton("Neue KA", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { } }) .setNegativeButton("Abbrechen", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { existingLessonDialog.this.getDialog().cancel(); } }); return builder.create(); } }

and landscape layout:

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity$fragmentTab1"> <TextView android:id="@+id/section_label" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/scrollView" android:layout_marginTop="25dp"> <TableLayout android:layout_width="fill_parent" android:layout_height="fill_parent"> <TableRow android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/tableRow2"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="07:45 - 08:30" android:id="@+id/uhrzeit1" android:layout_margin="5dp" android:layout_column="0" android:lines="2" android:textSize="25sp" android:clickable="true" android:onClick="onTextViewClick"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Deutsch \n in 404" android:id="@+id/montag1" android:layout_margin="5dp" android:layout_column="1" android:lines="2" android:layout_weight="20" android:textSize="25sp" android:clickable="true" android:onClick="onTextViewClick" android:tag="stunde"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Text" android:id="@+id/dienstag1" android:layout_margin="5dp" android:layout_column="2" android:lines="2" android:layout_weight="20" android:textSize="25sp" android:clickable="true" android:onClick="onTextViewClick" android:tag="stunde"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Text" android:id="@+id/mittwoch1" android:layout_margin="5dp" android:layout_column="3" android:lines="2" android:layout_weight="20" android:textSize="25sp" android:clickable="true" android:onClick="onTextViewClick" android:tag="stunde"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Text" android:id="@+id/donnerstag1" android:layout_margin="5dp" android:layout_column="4" android:lines="2" android:layout_weight="20" android:textSize="25sp" android:clickable="true" android:onClick="onTextViewClick" android:tag="stunde"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Text" android:id="@+id/freitag1" android:layout_margin="5dp" android:layout_column="5" android:lines="2" android:layout_weight="20" android:textSize="25sp" android:clickable="true" android:onClick="onTextViewClick" android:tag="stunde"/> </TableRow>

and another 10 tablets like this

and portrait layout:

  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity$fragmentTab1"> <TextView android:id="@+id/section_label" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/scrollView"> <TableLayout android:layout_width="fill_parent" android:layout_height="fill_parent"> <TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="07:45 -\n08:30" android:id="@+id/uhrzeit1p" android:layout_column="0" android:textIsSelectable="false" android:textSize="25sp" android:layout_margin="5dp" android:lines="2"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Text" android:id="@+id/actualLesson1" android:layout_column="1" android:textIsSelectable="false" android:textSize="25sp" android:layout_margin="5dp" android:lines="2" android:layout_weight="50"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="New Text" android:id="@+id/actualNote1" android:layout_column="2" android:textIsSelectable="false" android:textSize="25sp" android:layout_margin="5dp" android:lines="2" android:layout_weight="50"/> </TableRow>

there are also 10 more pills like this

and finally logcat:

  08-15 13:02:45.938 438-453/? I/ActivityManager: Displayed de.nathan.android.droidschool/.MainActivity: +6s548ms 08-15 13:04:10.378 27691-27691/de.nathan.android.droidschool D/AndroidRuntime: Shutting down VM 08-15 13:04:10.388 27691-27691/de.nathan.android.droidschool W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x41760700) 08-15 13:04:10.408 27691-27691/de.nathan.android.droidschool E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IllegalStateException: Could not execute method of the activity at android.view.View$1.onClick(View.java:3633) at android.view.View.performClick(View.java:4240) at android.view.View$PerformClick.run(View.java:17721) at android.os.Handler.handleCallback(Handler.java:730) at android.os.Handler.dispatchMessage(Handler.java:92) 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.reflect.InvocationTargetException at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:525) at android.view.View$1.onClick(View.java:3628) ... 11 more Caused by: java.lang.NullPointerException at de.nathan.android.droidschool.MainActivity.onTextViewClick(MainActivity.java:299) ... 14 more 08-15 13:04:10.428 438-665/? W/ActivityManager: Force finishing activity de.nathan.android.droidschool/.MainActivity 08-15 13:04:10.948 438-454/? W/ActivityManager: Activity pause timeout for ActivityRecord{41ef1e68 u0 de.nathan.android.droidschool/.MainActivity} 08-15 13:04:21.548 438-454/? W/ActivityManager: Activity destroy timeout for ActivityRecord{41ef1e68 u0 de.nathan.android.droidschool/.MainActivity} 08-15 13:09:10.448 27691-27691/de.nathan.android.droidschool I/Process: Sending signal. PID: 27691 SIG: 9
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3 answers

This is a possible line that can cause NPE: if (v.getTag().equals("stunde")) newFragment2.show(getSupportFragmentManager(), "missiles");

The first TextView does not have a tag, while all the others have it. Therefore, either add a tag or reorder if:

 if("stunde".equals(v.get())) { newFragment2.show(getSupportFragmentManager(), "missiles"); }
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 if (v.getTag().equals("stunde")) newFragment2.show(getSupportFragmentManager(), "missiles")

does this change / show the fragment without commit (); ??

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This is because the oncreate method is called again, which recreates the xml views when the screen orientation changes. you need to stop the oncreate call when the orientation changes. you can do this by adding android: configChanges = "keyboard | orientation" in the activity tag in the manifest. Good luck.

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Source: https://habr.com/ru/post/1497223/

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