package com.pingyijinren.test;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import java.util.Timer;import java.util.TimerTask;public class MainActivity extends AppCompatActivity {    private int i;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        i=0;        new Timer().schedule(new TimerTask(){  //执行循环任务，三个参数分别为任务内容，执行开始时间，多长时间执行一次，在子线程中执行            @Override            public void run(){                Log.d("MainActivity","我是第几"+i+"次");                i++;            }        },0,10000);        Log.d("MainActivity","我是主线程");    }}