Android开发使用Handler实现图片轮播功能示例

package com.example.handle_01;import android.os.Handler;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.ImageView;import android.widget.TextView;public class MainActivity extends AppCompatActivity {  private TextView textView;  private Handler handler = new Handler();  private ImageView imageView;  private int[]images = {      R.mipmap.image1,R.mipmap.image2  };  private int index;  private MyRunnable myRunnable = new MyRunnable();  class MyRunnable implements Runnable{    @Override    public void run() {      index++;      index = index%2;      imageView.setImageResource(images[index]);      handler.postDelayed(myRunnable,1000);    }  }  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    textView = (TextView) findViewById(R.id.textView);    imageView = (ImageView) findViewById(R.id.imageView);    handler.post(myRunnable);      }}