package max.test04;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Handler.Callback;

import android.os.Message;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends Activity implements Callback {

private TextView txt1=null;

private Button btn1=null;

private Button btn2=null;

private Handler handler;

private int i=0;

private boolean bl;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

txt1=(TextView)this.findViewById(R.id.txt1);

btn1=(Button)this.findViewById(R.id.btn1);

btn2=(Button)this.findViewById(R.id.btn2);

btn2.setOnClickListener(btn2Click);

handler = new Handler(this);

btn1.setOnClickListener(new View.OnClickListener()

{

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

bl=false;

}

});

}

private View.OnClickListener btn2Click= new View.OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

new Thread(new TThreadTest()).start();

}

};

@Override

public boolean handleMessage(Message msg) {

// TODO Auto-generated method stub

switch(msg.what)

{

case 0:

String s = (String)msg.obj;

// //if (msg.obj InstanceOf String)

txt1.setText(s);

// Log.d("log text", s);

break;

case 1:

break;

}

return false;

}

private class TThreadTest implements Runnable

{

@Override

public void run() {

// TODO Auto-generated method stub

//etText.setText("线程赋值");

//handler.obtainMessage(0, "线程赋值").sendToTarget();

bl=true;

while(bl){

i++;

handler.obtainMessage(0,String.valueOf(i)).sendToTarget();

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

 

}