I compared the API level 25 Toast class and others for the difference and I found an interesting thing there:įrom API 25, Android added a new param IBinder windowToken for Toast#handleShow(), and It brought an exception. Fragment fragmentManager getSupportFragmentManager() fragment1 (StudyFragment) fragmentManager.findFragmentById(R.id.fragmentstudy1) secondFragment (SecondFragment) fragmentManager.findFragmentByTag('fragmentsecond') fragmentManager. So now, after all, my research and analysis on BadTokenException, what I noticed about all the crashes there on Crashltyics: DialogFragment is a specialized Fragment used when you want to display an overlay modal window within an activity that floats on top of the rest of the. If returned the WindowManagerGlobal.ADD_BAD_APP_TOKEN, the exception occurs when the WMS.addWindow () function is called to check whether the window to be added is not in violation of the policy according to the android window policy. Return WindowManagerGlobal.ADD_BAD_APP_TOKEN Every of those managers is a bridge to communicate and use system. LayoutInflater inflate and create views from xml layout resource files. ConnectivityManager access network connection details and manage those connections. This ensures secure interaction between the application and the window manager (by making it impossible to add windows on top of other applications), and also makes it easy for the activity manager to make direct requests to the window manager.Īnd the code that throws “BadTokenException” : Context.getSystemService method is used when we want to access one of few Android system-level services. The activity manager gives this token to both the (*application) and the window manager, and it sends the token to the window manager each time it wants to add a new window to the screen. Remember to: You must manually call onKeyDown and onWindowFocusChanged. When an application starts up for the first time, the ActivityManagerService creates a special kind of window token called an application window token, which uniquely identifies the application’s top-level container window. FullscreenFragment - simple android fragment that will make fullscreen for you. Without window tokens, this necessary identification step wouldn’t be possible and the window manager wouldn’t be able to protect itself from malicious applications. If the tokens don’t match, the window manager rejects the request and throws a BadTokenException. The window manager protects against this by requiring applications to pass their application’s window token as part of each request to add or remove a window. Window tokens are important for security reasons because they make it impossible for malicious applications to draw on top of the windows of other applications. Window Tokens:Īs the name suggest, a window token is a special type of Binder token used by window manager to uniquely identify a window in the system. WindowManagerService (WMS) is a system service that manages the windows on Android. Window window getActivity ().getWindow () window.clearFlags () This code clears the flag (I have it on the Fragment's onResume callback), but the issue is, that it doesn't go into effect till next configuration change (screen rotation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |