StatusBar.java

static void translucentStatusBar(Activity activity, boolean hideStatusBarBackground) {
        Window window = activity.getWindow();

        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        if (hideStatusBarBackground) {// Remove status bar
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.setStatusBarColor(Color.TRANSPARENT);
            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
        } else {// Transparent status bar
            window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
        }

        ViewGroup mContentView = window.findViewById(Window.ID_ANDROID_CONTENT);
        View mChildView = mContentView.getChildAt(0);
        if (mChildView != null) {
            ViewCompat.setFitsSystemWindows(mChildView, false);
            ViewCompat.requestApplyInsets(mChildView);
        }
    }