Android adjustresize全屏無效問題

標籤：

屏模式下，即使將activity的windowSoftInputMode的屬性設定為：adjustResize，在鍵盤顯示時它未將Activity的Screen向上推動，所以你Activity的view的根樹的尺寸是沒有變化的。在這種情況下，你也就無法得知鍵盤的尺寸，對根view的作相應的推移。全屏下的鍵盤無法Resize的問題從2.1就已經存在了，直到現在google還未給予解決。
可通過下面類解決這個問題：

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);    }}

使用方法：在你的Activity的oncreate()方法裡調用AndroidBug5497Workaround.assistActivity(this);即可。注意：在setContentView(R.layout.xxx)之後調用。

Android adjustresize全屏無效問題