Created
August 4, 2014 10:20
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AndroidBug5497Workaround for fullscreen activities with edit text
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package com.myspace.ilike.common.util; | |
import android.app.Activity; | |
import android.graphics.Rect; | |
import android.view.View; | |
import android.view.ViewTreeObserver; | |
import android.widget.FrameLayout; | |
public class AndroidBug5497Workaround { | |
// For more information, see | |
// https://code.google.com/p/android/issues/detail?id=5497 | |
// To use this class, simply invoke assistActivity() on an Activity that | |
// already has its content view set. | |
public static void assistActivity(Activity activity) { | |
new AndroidBug5497Workaround(activity); | |
} | |
private View mChildOfContent; | |
private int usableHeightPrevious; | |
private FrameLayout.LayoutParams frameLayoutParams; | |
private AndroidBug5497Workaround(Activity activity) { | |
FrameLayout content = (FrameLayout) activity | |
.findViewById(android.R.id.content); | |
mChildOfContent = content.getChildAt(0); | |
mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener( | |
new ViewTreeObserver.OnGlobalLayoutListener() { | |
public void onGlobalLayout() { | |
possiblyResizeChildOfContent(); | |
} | |
}); | |
frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent | |
.getLayoutParams(); | |
} | |
private void possiblyResizeChildOfContent() { | |
int usableHeightNow = computeUsableHeight(); | |
if (usableHeightNow != usableHeightPrevious) { | |
int usableHeightSansKeyboard = mChildOfContent.getRootView() | |
.getHeight(); | |
int heightDifference = usableHeightSansKeyboard - usableHeightNow; | |
if (heightDifference > (usableHeightSansKeyboard / 4)) { | |
// keyboard probably just became visible | |
frameLayoutParams.height = usableHeightSansKeyboard | |
- heightDifference; | |
} else { | |
// keyboard probably just became hidden | |
frameLayoutParams.height = usableHeightSansKeyboard; | |
} | |
mChildOfContent.requestLayout(); | |
usableHeightPrevious = usableHeightNow; | |
} | |
} | |
private int computeUsableHeight() { | |
Rect r = new Rect(); | |
mChildOfContent.getWindowVisibleDisplayFrame(r); | |
return (r.bottom - r.top); | |
} | |
} |
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