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);
}

};
}