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Android的线程和java的线程是有些不同的,所以我就直接上代码吧,这样大家看的也明白些,要不容易把大家的思路给整混乱了,那样的话,对大家就不好了,说了很多废话大家还是来看看下面的代码吧
java代码: import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
* @author Tony Shen
*
*/
public class Main extends Activity {
private Button button;
private Timer timer;
private final int TIMER_EXECUTE = 1;
private final int ERROR_MESSAGE = 1;
private final int CHECK_TIME = 5000;
private EThread eThread;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button = (Button) findViewById(R.id.btn);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//timer for check the thread
timer = new Timer();
timer.schedule(new TimerTask(){
@Override
public void run() {
checkThread();
}
},CHECK_TIME);
eThread = new EThread();
eThread.start();
}
});
}
java代码: @Override
protected Dialog onCreateDialog(int id) {
return new AlertDialog.Builder(this).setTitle("错误").setMessage("线程超时!").create();
}
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch(msg.what){
case TIMER_EXECUTE:
if (eThread.getState().toString().equals("TERMINATED")||eThread.getState().toString().equals("TIMED_WAITING")) {
eThread.stopThread(true);
showDialog(ERROR_MESSAGE);
timer.cancel();// 关闭计时器
}
break;
}
super.handleMessage(msg);
}
};
protected void checkThread() {
Message msg = new Message();
msg.what = TIMER_EXECUTE;
mHandler.sendMessage(msg);
}
class EThread extends Thread {
private boolean flag = true;
public void stopThread(boolean flag) {
this.flag = !flag;
}
@Override
public void run() {
Looper.prepare();
try {
Thread.sleep(6000);
} catch (InterruptedException e) {
e.printStackTrace();
}
timer.cancel();// 关闭计时器
if(!flag) {
return;
}
Intent i = new Intent(Main.this,SecondActivity.class);
startActivity(i);
}
}
} |
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