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POAndroid: onBackPressed() not being called when navigation drawer open
 

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  1. POAndroid: onBackPressed() not being called when navigation drawer open
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    <p>I have a main activity that is situated with two navigation drawers. The left one is always accessible, but the right one is used for displaying some necessary lists and performing certain actions. When I have certain fragments loaded into the center <code>FrameLayout</code> of the activity they have actions that require the right drawer be opened and an item be selected. All of this is working great, but I want to make sure that when either the back button is pressed or the screen is clicked outside the drawer that the drawer is closed, locked and the fragment loaded in there is removed. I should also mention that this right drawer holds a <code>FrameLayout</code> and relies on fragments. </p> <p>In my main activity this is what I'm calling:</p> <pre><code>@Override public void onBackPressed(){ Log.d(TAG, "onBackPressed() called"); if(drawerLayoutRight.isDrawerOpen(drawerFrameRight)){ Log.d(TAG, "----------------------"); drawerLayoutRight.closeDrawer(drawerFrameRight); drawerLayoutRight.setDrawerLockMode(1, drawerFrameRight); ExcerciseList fragment = (ExcerciseList) getFragmentManager().findFragmentById(R.id.right_drawer); FragmentTransaction transaction = getFragmentManager().beginTransaction(); transaction.remove(fragment).commit(); } else { super.onBackPressed(); } } </code></pre> <p>I also tried:</p> <pre><code>public boolean onKeyDown(int keyCode, KeyEvent event){ if (keyCode == KeyEvent.KEYCODE_BACK) { Log.d(TAG, "onKeyDown called"); return true; } return super.onKeyDown(keyCode, event); } </code></pre> <p>But this hasn't worked either. Whenever I click the back button the drawer will close, but neither of these methods would be called. But once the drawer is closed, if the back button is pressed these methods will be invoked. I was also wondering if anyone knew of a simple way to handle a click outside of the drawer. I figure I could make a custom <code>DrawerLayout</code> and override <code>drawerClose()</code> or check the coordinates that are clicked on a touch event. Just curious if anyone has a simpler way.</p>
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    1. COThe `DrawerLayout` (I assume that's what you're using) will consume the back button event if the drawer is opened. Check out the `onKeyDown()` and `onKeyUp()` methods (in the source code).
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    2. COSo for the `onKeyDown()` listener where would I use this. It seems cyclical to me because wouldn't I have to know when the beck button is pressed, which isn't working? Can you clear this up for me?
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    3. COI think that I may be able to use a `DrawerListener` to deal with this. Because the drawer is closing everytime the back button is pressed.
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