执行循环任务new Timer().schedule(new TimerTask(){},0,1000);

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");
    }
}