如何禁用Android片段中的屏幕捕获? [英] How to disable screen capture in Android fragment?
问题描述
是否可以禁用片段的屏幕捕获? 我知道以下内容适用于Activity类
Is it possible to disable screen capture from a fragment? I know the below works for an Activity class
onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE,
WindowManager.LayoutParams.FLAG_SECURE);
}
但是,如果我有一个片段显示在活动顶部,该怎么办?我可以以某种方式禁用屏幕捕获吗?我试图在片段的onCreate()或onCreateView()方法中设置FLAG_SECURE,但是它不起作用.我仍然可以进行屏幕截图.仅当我在父活动中添加该标志时,我才能将其禁用.
But what if I have a fragment which shows up on top of an activity. Can I somehow disable screen capture? I've tried to set the FLAG_SECURE in the onCreate() or onCreateView() method of the fragment, but it doesn't work. I'm still able to take screen shot. Only when I add the flag in parent activity I can disable it.
在相关说明中,例如,我在ParentActivity.java中有一个方法(扩展了Activity)
On a related note, say, I've a method in ParentActivity.java (which extends Activity)
public void disableScreenCapture() {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE,
WindowManager.LayoutParams.FLAG_SECURE);
}
在我的ChildFragment.java中(扩展了Fragment)
And in my ChildFragment.java (which extends Fragment)
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ParentActivity parentActivity = (ParentActivity)getActivity();
parentActivity.disableScreenCapture(); //doesn't work
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ParentActivity parentActivity = (ParentActivity)getActivity();
parentActivity.disableScreenCapture(); //doesn't work either
}
有什么想法吗?
预先感谢
推荐答案
以下代码对我有用.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
getActivity().getWindow().setFlags(LayoutParams.FLAG_SECURE, LayoutParams.FLAG_SECURE);
Window window = getActivity().getWindow();
WindowManager wm = getActivity().getWindowManager();
wm.removeViewImmediate(window.getDecorView());
wm.addView(window.getDecorView(), window.getAttributes());
}
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