Set app by default to import BibTeX files

[silvia-ivanova-github-rep]

Description Closes #167 BibBuddy can be selected as the default app to open BibTeX files. Added new Fragment AsDefaultAppFragment that handles the opened file, when BibBuddy is selected to be the default app.

Affects Mainly AsDefaultAppFragment and MainActivity.

Notes for Reviewer As discussed in the meeting, there is no mimeType for BibTeX files. "Open with"-window comes also when the selected file is not a BibTeX. For this purpose, when another file type (not BibTeX) is selected, an Alert Dialog with corresponding information is shown. For reference, here is my question in StackOverflow: https://stackoverflow.com/questions/66871316/android-java-file-association-and-intent-handling

Please review & comment/approve. Thanks!

[claudia3]

Please change the header of the app e.g. to "Bib Datei importieren" when importing because currently it only shows "Bibliothek" and it is not clear that the user imports a file.

[claudia3]

Error:

• open a bib file in your folder on your smartphone e.g. Downloads with Bib Buddy
• in the Library Screen use the back button multiple times without importing the selected file
• then the app crashes

E/InputEventSender: Exception dispatching finished signal.
E/MessageQueue-JNI: Exception in MessageQueue callback: handleReceiveCallback
E/MessageQueue-JNI: java.lang.IllegalStateException: Fragment AsDefaultAppFragment{8bbdb51} (2167d3ea-07c9-4c53-a180-2d0a6f0f0adb)} not attached to an activity.
        at androidx.fragment.app.Fragment.requireActivity(Fragment.java:926)
        at de.bibbuddy.AsDefaultAppFragment.removeDefaultFragment(AsDefaultAppFragment.java:126)
        at de.bibbuddy.AsDefaultAppFragment.onBackPressed(AsDefaultAppFragment.java:53)
        at de.bibbuddy.BackStackFragment$1.handleOnBackPressed(BackStackFragment.java:16)
        at androidx.activity.OnBackPressedDispatcher.onBackPressed(OnBackPressedDispatcher.java:192)
        at androidx.activity.ComponentActivity.onBackPressed(ComponentActivity.java:539)
        at android.app.Activity.onKeyUp(Activity.java:3784)
        at android.view.KeyEvent.dispatch(KeyEvent.java:2866)
        at android.app.Activity.dispatchKeyEvent(Activity.java:4090)
        at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.java:122)
        at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:84)
        at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.java:140)
        at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:569)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3054)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:390)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:5947)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5815)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5310)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5485)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5542)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5518)
        at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:5676)
        at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:3179)
        at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:2721)
        at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:2712)
        at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:3156)
        at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:143)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:335)
        at android.os.Looper.loop(Looper.java:183)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: de.bibbuddy, PID: 9082
    java.lang.IllegalStateException: Fragment AsDefaultAppFragment{8bbdb51} (2167d3ea-07c9-4c53-a180-2d0a6f0f0adb)} not attached to an activity.
        at androidx.fragment.app.Fragment.requireActivity(Fragment.java:926)
        at de.bibbuddy.AsDefaultAppFragment.removeDefaultFragment(AsDefaultAppFragment.java:126)
        at de.bibbuddy.AsDefaultAppFragment.onBackPressed(AsDefaultAppFragment.java:53)
        at de.bibbuddy.BackStackFragment$1.handleOnBackPressed(BackStackFragment.java:16)
        at androidx.activity.OnBackPressedDispatcher.onBackPressed(OnBackPressedDispatcher.java:192)
        at androidx.activity.ComponentActivity.onBackPressed(ComponentActivity.java:539)
        at android.app.Activity.onKeyUp(Activity.java:3784)
        at android.view.KeyEvent.dispatch(KeyEvent.java:2866)
        at android.app.Activity.dispatchKeyEvent(Activity.java:4090)
        at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.java:122)
        at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:84)
        at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.java:140)
        at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:569)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3054)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:390)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:5947)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5815)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5310)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5485)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5542)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5518)
        at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:5676)
        at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:3179)
        at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:2721)
        at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:2712)
        at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:3156)
        at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:143)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:335)
        at android.os.Looper.loop(Looper.java:183)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
I/Process: Sending signal. PID: 9082 SIG: 9

Another Error

E/InputEventSender: Exception dispatching finished signal.
E/MessageQueue-JNI: Exception in MessageQueue callback: handleReceiveCallback
E/MessageQueue-JNI: java.lang.IllegalStateException: Fragment LibraryFragment{96ce19} (5666df6b-ee23-4fe3-8372-7fbe777121f7)} not associated with a fragment manager.
        at androidx.fragment.app.Fragment.getParentFragmentManager(Fragment.java:1038)
        at de.bibbuddy.BackStackFragment.closeFragment(BackStackFragment.java:45)
        at de.bibbuddy.LibraryFragment.onBackPressed(LibraryFragment.java:50)
        at de.bibbuddy.BackStackFragment$1.handleOnBackPressed(BackStackFragment.java:16)
        at androidx.activity.OnBackPressedDispatcher.onBackPressed(OnBackPressedDispatcher.java:192)
        at androidx.activity.ComponentActivity.onBackPressed(ComponentActivity.java:539)
        at android.app.Activity.onKeyUp(Activity.java:3784)
        at android.view.KeyEvent.dispatch(KeyEvent.java:2866)
        at android.app.Activity.dispatchKeyEvent(Activity.java:4090)
        at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.java:122)
        at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:84)
        at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.java:140)
        at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:569)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3054)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:390)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:5947)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5815)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5310)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5485)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5542)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5518)
        at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:5676)
        at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:3179)
        at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:2721)
        at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:2712)
        at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:3156)
        at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:143)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:335)
        at android.os.Looper.loop(Looper.java:183)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: de.bibbuddy, PID: 12575
    java.lang.IllegalStateException: Fragment LibraryFragment{96ce19} (5666df6b-ee23-4fe3-8372-7fbe777121f7)} not associated with a fragment manager.
        at androidx.fragment.app.Fragment.getParentFragmentManager(Fragment.java:1038)
        at de.bibbuddy.BackStackFragment.closeFragment(BackStackFragment.java:45)
        at de.bibbuddy.LibraryFragment.onBackPressed(LibraryFragment.java:50)
        at de.bibbuddy.BackStackFragment$1.handleOnBackPressed(BackStackFragment.java:16)
        at androidx.activity.OnBackPressedDispatcher.onBackPressed(OnBackPressedDispatcher.java:192)
        at androidx.activity.ComponentActivity.onBackPressed(ComponentActivity.java:539)
        at android.app.Activity.onKeyUp(Activity.java:3784)
        at android.view.KeyEvent.dispatch(KeyEvent.java:2866)
        at android.app.Activity.dispatchKeyEvent(Activity.java:4090)
        at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.java:122)
        at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:84)
        at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.java:140)
        at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:569)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3054)
        at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
        at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:390)
        at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:5947)
        at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5815)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5310)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5485)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5542)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:5341)
        at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:5314)
        at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5367)
        at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:5333)
        at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5518)
        at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:5676)
        at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:3179)
        at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:2721)
        at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:2712)
        at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:3156)
        at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:143)
        at android.os.MessageQueue.nativePollOnce(Native Method)
        at android.os.MessageQueue.next(MessageQueue.java:335)
        at android.os.Looper.loop(Looper.java:183)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
I/Process: Sending signal. PID: 12575 SIG: 9

[claudia3]

The fixing of the bug will be set aside due to limited time after discussion.