AndroidBug5497Workaround supporting translucent status window attribute

AndroidBug5497WorkaroundSupportingTranslucentStatus.java

package com.tietie.foundation.util;

import android.app.Activity;
import android.graphics.Rect;
import android.os.Build;
import android.view.View;
import android.view.ViewTreeObserver;
import android.view.WindowManager;
import android.widget.FrameLayout;

public class AndroidBug5497WorkaroundSupportingTranslucentStatus {

    // 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 AndroidBug5497WorkaroundSupportingTranslucentStatus(activity);
    }

    private View mChildOfContent;
    private int usableHeightPrevious;
    private FrameLayout.LayoutParams frameLayoutParams;

    private boolean isTranslucentEnabled = false;

    private AndroidBug5497WorkaroundSupportingTranslucentStatus(Activity activity) {
        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
        final WindowManager.LayoutParams attrs = activity.getWindow()
                .getAttributes();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            isTranslucentEnabled = (attrs.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0;
        }
        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);
        if (isTranslucentEnabled) {
            r.top = 0;
        }
        return (r.bottom - r.top);
    }

}

add case:

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            if ((!isTranslucentEnabled) && (activity.getWindow().getStatusBarColor() == Color.TRANSPARENT)) {
                isTranslucentEnabled = true;
            }
        }