回调经典示例

package com.hefei.ppa.mytest;

import android.app.Activity;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView tvTest= (TextView) findViewById(R.id.tv_test);

        tvTest.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
             //2、回调传值
                if (mcallBack != null) {
                    mcallBack.callBack(6);
                }
            }
        });

        //1、注册回调接口
         this.setOnRefreshLisener(new SocketCallBack() {
             @Override
             public void callBack(int i) {
                 Log.i("TAG","回调后返回的值为"+i);
             }
         });
    }


    public interface SocketCallBack{
        public void callBack(int i);
    }

    public SocketCallBack mcallBack;

    public  void setOnRefreshLisener(SocketCallBack callBack){
        mcallBack=callBack;
    }
}