java 中Handler 和Runnable 的使用 异步发送消息 转

public class MainActivity extends Activity {
TextView text1, text2;
Button button;
Thread th;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text1 = (TextView)findViewById(R.id.text1);
text2 = (TextView)findViewById(R.id.text2);
button = (Button)findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub

th = new Thread(runnable);
th.start();
}
});
}
Handler myHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
switch (msg.what) {
case 1:
System.out.println("-----------1--------------");
System.out.println(msg.getData().getString("s1"));
System.out.println(msg.getData().getString("s2"));
try{
text1.setText(msg.getData().getString("s1"));
text2.setText(msg.getData().getString("s1"));
}catch(Exception e){
e.printStackTrace();
}
break;

default:
break;
}
super.handleMessage(msg);
}
};

Runnable runnable = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
String s1 = "fsdfsgfdsgdfgfdgdhshshs";
String s2 = "fsfsdgdshdhdshrehreherh";

Message msg = new Message();
msg.what = 1;
Bundle bundle = new Bundle();
bundle.putString("s1", s1);
bundle.putString("s2", s2);
msg.setData(bundle);
MainActivity.this.myHandler.sendMessage(msg);
}
};
}