關於JAVA中this的應用辦法小結。本站提示廣大學習愛好者：（關於JAVA中this的應用辦法小結）文章只能為提供參考，不一定能成為您想要的結果。以下是關於JAVA中this的應用辦法小結正文
package com.act262.sockettx;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
/**
* 可以在其他線程中獲得View類的數據,然則不克不及修正或許設置View類的數據
*
*/
public class Main extends Activity {
TextView result = null;
EditText get = null;
Button update = null;
Handler handler;
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.main);
result = (TextView) findViewById(R.id.result);
update = (Button) findViewById(R.id.update);
get = (EditText) findViewById(R.id.get);
handler = new Handler() {
public void handleMessage(Message msg) {
if (msg.what == 1) {
result.setText("after update ui "
+ msg.getData().getString("data")
+ " \nman thread : "
+ Thread.currentThread().getName());
}
}
};
result.setText("before update ui main thread : "
+ Thread.currentThread().toString());
update.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new MyThread("my thread").start();
}
});
}
class MyThread extends Thread {
public MyThread(String name) {
super(name);
}
@Override
public void run() {
// 發送不帶數據的新聞
// handler.sendEmptyMessage(1);
// 發送附帶數據的新聞
Message msg = new Message();
Bundle data = new Bundle();
data.putString("data", get.getText().toString() + " my thread: "
+ Thread.currentThread().getName());
msg.setData(data);
msg.what = 1;
handler.sendMessage(msg);
}
}
}
