Onbackpressed() Method Not Triggered In Appcompatactivity

AppCompatActivity onBackPressed() method fails to trigger in my activity. I see the back arrow button and get the animation when pressing it, but nothing else happens. also overrid

Solution 1:

I believe onBackPressed() is only called when the physical back button is pressed. If you're attempting to catch the toolbar back button press (the navigation icon), try using the following snippet:

@OverridepublicbooleanonOptionsItemSelected(MenuItem menuItem) {
    switch (menuItem.getItemId()) {
        case android.R.id.home: {
            // Your code here
        }
    }
    return (super.onOptionsItemSelected(menuItem));
}

Solution 2:

In your manifest file define the following inside your activity tag:

<meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.example.ParentActivity" />

After that in your activity:

@OverridepublicbooleanonOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            returntrue;
        default:
            returnsuper.onOptionsItemSelected(item);
        }
    }

Solution 3:

back_button on the actionbar

this will wok

Toolbar toolbar=(Toolbar) findViewById(R.id.appBar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP);
getSupportActionBar().setDisplayShowHomeEnabled(true);

@OverridepublicvoidonBackPressed() {
super.onBackPressed();
this.finish();

}

or set which activity load when click back

<meta-data
android:name="android.support.PARENT_ACTIVITY"android:value="com.example.ParentActivity" />

Solution 4:

onBackPressed() is not present in AppCompactActivity, You have to implement an InterFaceKeyEvent.Callback and override onKeyUp method and check if the key is BackButton or you can extend ActionBarActivity which is child class of AppCompactActivity

Solution 5:

This code works for me. Obviously there isn't all the code, but i think it can usefull for you to understand how to implements the backPressed event.

publicclassRedActivityextendsAppCompatActivity {

  @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    ...
    finalActionBarab= getSupportActionBar();
    ab.setHomeAsUpIndicator(R.drawable.ic_menu);
    ab.setDisplayHomeAsUpEnabled(true);
    ...
  }

  ...

  @OverridepublicvoidonBackPressed() {
    if (isDrawerOpen()) {
      drawerLayout.closeDrawer(GravityCompat.START);
    } elseif (getFragmentManager().getBackStackEntryCount() > 0) {
      getFragmentManager().popBackStack();
    } else {
     //Ask the user if they want to quitnewAlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert)
                        .setTitle(R.string.quit)
                        .setMessage(R.string.really_quit)
                        .setPositiveButton(R.string.yes, newDialogInterface.OnClickListener() {

                            @OverridepublicvoidonClick(DialogInterface dialog, int which) {        
                                finish();
                            }

                        })
          .setNegativeButton(R.string.no, null)
          .show();
       }
    }
}