android 线程超时的例子
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(); } }); } @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); } } }