沿着這個問題的線索,可以追溯到: http://code.google.com/p/android/issues/detail?id=5497 ,安卓官方問題回饋帖,這個問題的代号為“ 5497 ” ,就這個問題帖的回複來看,該問題困惑了許多人數年之久,問題釋出日期“ Dec 16, 2009 ”,現在我在安卓 4.4.2 環境運作,這個問題依舊存在。在此推薦這其中的一個解決方法,來自:stackoverflow.com,實測有效。 [java] view plain copy print ?
- 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);
- }
- }
在Activity/Fragment的onCreate()/onCreateView()裡調用AndroidBug5497Workaround.assistActivity(Activity);代碼搬運,希望能夠幫助到各位。感謝答案提供者,祝生活愉快。