在Activity中加入以下代碼：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
? ? int flagTranslucentStatus = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
? ? int flagTranslucentNavigation = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
? ? if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
? ? ? ? Window window = getWindow();
? ? ? ? WindowManager.LayoutParams attributes = window.getAttributes();
? ? ? ? attributes.flags |= flagTranslucentNavigation;
? ? ? ? window.setAttributes(attributes);
? ? ? ? getWindow().setStatusBarColor(Color.TRANSPARENT);
? ? } else {
? ? ? ? Window window = getWindow();
? ? ? ? WindowManager.LayoutParams attributes = window.getAttributes();
? ? ? ? attributes.flags |= flagTranslucentStatus | flagTranslucentNavigation;
? ? ? ? window.setAttributes(attributes);
? ? }
}
