Android supports Java -class library technology analysis and practice

Android supports the Java class library technology analysis and practice of the Filler Frame framework introduction: When developing Android applications, layout fillers are one of the commonly used tools.It allows us to combine the layout resources defined in the XML file with the Java code to dynamically create a view hierarchical structure.However, when the layout resources are complex or large, the synchronous execution of the layout of the filling may lead to a decline in performance.To solve this problem, Google provides an Android support for the Async Layout Inflater, which allows the layout asynchronous asynchronous without blocking UI threads.This article will analyze the Java library of this framework and provide relevant practical examples. 1. Asynclayoutinflater class: The ASYNCLAYOUTINFLATER class is one of the main classes of Android supporting libraries.It allows to load layout resources asynchronously in the background thread to avoid performing this time -consuming operation on the UI thread. The following are the example code that uses the Asynclayoutinflator class to load and fill the layout: AsyncLayoutInflater inflater = new AsyncLayoutInflater(context); inflater.inflate(R.layout.layout_resource, parent, new AsyncLayoutInflater.OnInflateFinishedListener() { @Override public void onInflateFinished(@NonNull View view, int resid, @Nullable ViewGroup parent) { // Here the operation of the loading and filling layout here } }); In the above example code, we first create an Asynclayoutinflate object, and then call the Inflate () method to load the layout resources asynchronously.This method accepts three parameters: the ID of the layout resource, the parent container view, and the OninflatingFinishedLishes object.When the layout is loaded and filled, the onInflatefinished () method of OninflatingFinishedListener will be called. We can operate the view after loading and filling the layout here. 2. Asynclayoutinflator.oninflatefinishedlistener interface: Asynclayoutinflator.oninflaatefinishedListener interface is used to recover the layout and fill in and fill the completion.The interface contains the onInflatefinished () method, which automatically calls after the layout is loaded and filled. AsyncLayoutInflater.OnInflateFinishedListener listener = new AsyncLayoutInflater.OnInflateFinishedListener() { @Override public void onInflateFinished(@NonNull View view, int resid, @Nullable ViewGroup parent) { // Here the operation of the loading and filling layout here } }; AsyncLayoutInflater inflater = new AsyncLayoutInflater(context); inflater.inflate(R.layout.layout_resource, parent, listener); 3. Performance advantages and practical suggestions: The main advantage of the AsynclayOutinflator framework is that the layout loading and filling operations can be performed in the background thread, thereby avoiding time -consuming operations on the UI thread, and improving the performance and response speed of the application.When loading and filling a large number of complex layout resources, especially in lists or grid views, using Asynclayoutinflater can avoid the blockage of UI threads and improve the user experience. However, it should be noted that asynchronous loading layout is not suitable for all situations.If the layout resources are simpler and the loading and filling time is very short, then using Asynclayoutinflator may not bring obvious performance advantages.Therefore, before the use of asynchronous layout filling, please evaluate whether it is applicable according to the specific situation. in conclusion: This article conducts technical analysis of the JAVA library of Android supporting the layout of the filling device, and provides examples of use.By using the Asynclayoutinflator class and Asynclayoutinflator.oninflatingFinishedListener interface, we can use the characteristics of asynchronous loading and filling layout to enhance the performance and user experience of Android applications.However, the applicability is required to ensure good performance advantages based on the specific situation when using an asynchronous layout filling.