2019独角兽企业重金招聘Python工程师标准>>> 
首先将异步任务及回调包装在一个controller类中
package com.example.zzz;
import android.content.Context;
import android.os.AsyncTask;
public class BaseController {
private Context ctx;
private BaseControllerCallBack callback;
/**
* 构造函数
* @param ctx
* @param BaseControllerCallBack callback
*/
public BaseController(Context ctx, BaseControllerCallBack callback){
this.ctx=ctx;
this.callback=callback;
}
public void prepareTask(String param1,String param2,String param3){
new PrepareTask(param1,param2).execute(param3);
}
public void doTask(String param1,String param2,String param3){
new DoTask(param1,param2).execute(param3);
}
public class PrepareTask extends AsyncTask<String, Void, String>{
private String param1;
private String param2;
private String param3;
public PrepareTask(String param1,String param2){
this.param1=param1;
this.param2=param2;
}
@Override
protected String doInBackground(String... params) {
param3=params[0];
return test(param1,param2,param3);
}
@Override
protected void onPostExecute(String result) {
if(callback!=null){
callback.onPreparedDone(result);
}
}
}
public class DoTask extends AsyncTask<String, Void, String>{
private String param1;
private String param2;
private String param3;
public DoTask(String param1,String param2){
this.param1=param1;
this.param2=param2;
}
@Override
protected String doInBackground(String... params) {
param3=params[0];
return test(param1,param2,param3);
}
@Override
protected void onPostExecute(String result) {
if(callback!=null){
callback.onDoTaskDone(result);
}
}
}
//===============回调接口================//
public interface BaseControllerCallBack{
/**
* action1
* @param result
*/
public void onPreparedDone(String result);
/**
* action2
* @param result
*/
public void onDoTaskDone(String result);
}
private String test(String param1,String param2,String param3){
return "hello";
}
}在主程序中调用时
private void init() {
controller=new BaseController(getApplicationContext(), callback);
controller.prepareTask("11", "22", "33");
}
private BaseControllerCallBack callback=new BaseControllerCallBack() {
@Override
public void onPreparedDone(String result) {
controller.doTask("11", "22", "33");
}
@Override
public void onDoTaskDone(String result) {
//dosomething
}
};