Android supports the Java -class library technology architecture and design of the Java library in the framework (Async Layout Inflator) framework

Android supports the Java -class library technology architecture and design of the Java library in the framework (Async Layout Inflator) framework introduction: In Android development, Layoutinflater is an important tool that is used to convert the XML layout file into a View object.However, in some cases, the layout documents are large and complicated, resulting in a slow filling process, which affects the performance and user experience of the application.To solve this problem, the Android support library has introduced the Asynclayout Inflator framework, which can perform layout filling operations in the background thread to avoid interface stuttering and response delay. Technology Architecture: The technical architecture of the Async Layout Inflater framework is based on Asynctask and the callback mechanism.It puts the layout and placed in a background thread to avoid blocking the main thread.Here are the main class libraries and components of the Asynclayout Inflator framework: 1. Asynclayoutinflaater: This is the core class of the framework, which is used to perform asynchronous layout filling operations.It inherits from the Asynctask class and uses ThreadPoolexecutor to manage the background thread pool to achieve concurrent filling operations.The ASYNCLAYOUTINFLATER class provides an INFLATE method to allow developers to fill the layout asynchronous in the background thread. 2. Inflatorsult: This is an interface that defines the recovery method of filling results.When the layout filling operation is completed, Asynclayoutinflater will pass the filling result to the developer through the callback method. 3. OninflatingFinishedListener: This is a listener interface to receive the filling results and process the filling object after filling.Developers can implement this interface and pass it to the INFLATE method of Asynclayoutinflator to perform the corresponding operation after the filling is completed. 4. InflationInterceptor: This is an interceptor interface that inserts custom logic in different stages of filling operations.Developers can realize this interface and register it to Asynclayoutinflator, so as to modify the layout during the filling process and add business logic. Example code: The following is a simple example code that demonstrates how to use Asynclayoutinflator to perform asynchronous layout filling operations. // Create Asynclayoutinflator object AsyncLayoutInflater inflater = new AsyncLayoutInflater(context); // Create a recovery method for the completion of the layout InflateResult.OnInflateFinishedListener listener = new InflateResult.OnInflateFinishedListener() { @Override public void onInflateFinished(View view, int resId, ViewGroup parent) { // Execute the corresponding operation after the filling is completed // For example, add the filled View to the specified parent container parent.addView(view); } }; // Asynchronous filling layout inflater.inflate(R.layout.my_layout, null, listener); In the above example, first create an Asynclayoutinflator object and pass a Context object.Then, create an Inflatesult.oninflatefinishedLishedner object and implement the onInflateFinished method. In this method, the filling View can be processed.Finally, call the Inflate method of Asynclayoutinflater, and pass the layout resource ID, parent container, and filling the completion method.Asynclayoutinflator will perform layout filling operations in the background thread and call the callback method after the filling is completed.Developers can process the filled View object in the callback method. in conclusion: By introducing the asynchronous layout of the Android support library, developers can transfer the time -consuming layout operation to the background thread to implement, thereby improving the performance and user experience of the application.By using the Asynclayoutinflator class and related adjustment interfaces reasonably, developers can perform corresponding treatment and operations after the layout is completed.This design architecture will decompose the layout process with the main thread to avoid interface stuttering and response delay.