aimingkun的专栏



handler类的主要作用有两个

（1）在新启动的线程中发送消息

（2）在主线程中获取、处理消息

public class MainActivity extends Activity {

private ImageView iv;int[] imageids = new int[] { R.drawable.fy_d_go, R.drawable.fy_d_kf,R.drawable.fy_d_kf2, R.drawable.ic_launcher };int currentId = 0;

@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);iv = (ImageView) findViewById(R.id.imageView1);final Handler mhandle = new Handler() {

@Overridepublic void handleMessage(Message msg) {if (msg.what == 0x1233) {iv.setImageResource(imageids[currentId++ % imageids.length]);}}

};new Timer().schedule(new TimerTask() {@Overridepublic void run() {mhandle.sendEmptyMessage(0x1233);}}, 0, 1200);}

}

，不会因为别人显赫的成功而促使自己有卓越的进步。