Three parameters for asynchronous task class Ansyctask

The asynchronous task class Ansyctask is an abstract class whose three generic parameters are: Params , Progress and Result , these three parameter types are set by the user and can be any type, corresponding to the following three methods:

1 doInBackground(Params...) : This method runs in a sub-thread and handles some time-consuming tasks, such as network and database operations. Generally, the Params type can be set to Void;

2 onProgressUpdate(Progress...) .: After a method in a child thread publishProgress() is called, the UI thread will invoke the onProgressUpdate() method to show the progress of the task on the interface. Generally, the progress type can be set to integer;

3 onPostExecute(Result) : After the doInBackground() method executes and returns, the method is soon called by the UI thread, and the onPostExecute() data returned by the doInBackground() method is passed through the method to the UI thread, and the UI can be manipulated using the returned data. The Result type is onPostExecute() the type returned by the method.

Three parameters for asynchronous task class Ansyctask