解決安卓全屏“FLAG_FULLSCREEN”狀態下“adjustResize”失效，全屏狀態下WebView的輸入框被軟鍵盤擋住的問題

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，這個問題的代號爲“5497” ，就這個問題帖的回覆來看，該問題困惑了許多人數年之久，問題發佈日期“Dec 16, 2009”，現在我在安卓4.4.2環境運行，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。

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()裏調用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。