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Thirdly, there are two image processing that are chosen by users - the gray scale and comic effect in this study. We used bitmap factory to help us do this transform. Secondly, while the image processing computes, we need to transform raw data to bitmap format. That is why we need to overwrite auto focus method to help us take a clear picture. This problem can be solved in this study.įirstly, we wait for the auto focus to finish when we take a picture. Normally, you will encounter auto focus when you take a picture. #Android windowmanager background surfaceview androidYou just need to own an Android phone and you can establish a funny camera app. ![]() To design gray and comic style picture, it is not hard. LayoutParams = WindowManager.LayoutParams().apply else FloatingWindowService::class.Sometimes, we just find it fun to take a picture. WindowManager = getSystemService(WINDOW_SERVICE) as WindowManager Private lateinit var layoutParams: WindowManager.LayoutParams Private lateinit var windowManager: WindowManager To ensure that the application in the background, the floating window can still be displayed normally, so Service can be used here.Ģ. It can be started by other application components and will continue to run in the background even if the user switches to other applications. Service is an application component that can run for a long time in the background without providing an interface. Here, the text content is simply displayed, and no complicated things are done, so only TextView is set. Click ImageView in the upper right corner to close the floating window, and the rest area displays the content. The FrameLayout layout of the dark part of the top layer is used to realize the drag and drop function of the floating window. WindowManager also inherits these methods, and the parameters passed in by these methods are of type View, indicating that Window exists in the form of View.įor a simple layout of the floating window, please refer to the file layout_floating_window. Public void updateViewLayout(View view, ViewGroup.LayoutParams params) Public void addView(View view, ViewGroup.LayoutParams params) WindowManager is an interface class that inherits from ViewManager, and ViewManager defines three methods distributed to add, update, and delete View, as follows: Here we just need to know that WindowManager can be used to manage Window. ![]() #Android windowmanager background surfaceview updateIf we want to add, update and delete Window (View), we can use WindowManager, and WindowManager will leave the specific work to WindowManagerService. ![]() It is known from its name that it is used to manage Window, and its implementation class is WindowManagerImpl. WindowManager is an interface class that inherits from ViewManager. We should be familiar with Window, it is an interface class, the specific implementation class for PhoneWindow, it can manage View. The following will introduce a simple implementation of the lower floating window. For example, when watching live broadcast, return to the desktop through Home key, and the small window of live broadcast can still be displayed on the screen. Nowadays, many applications have the function of small floating window. Create View and add it to WindowManager4. ![]()
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