Android 中线程网络超时的处理

import java.util.Timer; 

import java.util.TimerTask; 

   

import android.os.Bundle; 

import android.os.Handler; 

import android.os.Message; 

import android.app.Activity; 

import android.app.ProgressDialog; 

import android.util.Log; 

import android.view.View; 

import android.view.View.OnClickListener; 

import android.widget.Button; 

import android.widget.Toast; 

   

public class MainActivity extends Activity { 

    private static final int TIME_OUT = 0; 

    private static final int SUCCESS = 1; 

    // 超时的时限为5秒 

    private static final int TIME_LIMIT = 5000; 

    ProgressDialog proDialog; 

    Timer timer; 

    Thread thread; 

    Button btn1, btn2; 

   

    @Override 

    protected void onCreate(Bundle savedInstanceState) { 

        super.onCreate(savedInstanceState); 

        setContentView(R.layout.activity_main); 

        btn1 = (Button) findViewById(R.id.button1); 

        btn2 = (Button) findViewById(R.id.button2); 

        // 测试未超时的线程，为btn1绑定事件 

        btn1.setOnClickListener(new OnClickListener() { 

            @Override 

            public void onClick(View v) { 

                proDialog = ProgressDialog.show(MainActivity.this, "提示", 

                        "线程运行中"); 

                // 匿名内部线程 

                thread = new Thread() { 

                    @Override 

                    public void run() { 

                        while (true) { 

                            try { 

                                //线程休眠时间，超时 

                                sleep(10000); 

                            } catch (InterruptedException   e) { 

                                break; 

                            } 

                        } 

   

                    } 

                }; 

                thread.start(); 

                // 设定定时器 

                timer = new Timer(); 

                timer.schedule(new TimerTask() { 

                    @Override 

                    public void run() { 

                        sendTimeOutMsg(); 

                    } 

                }, TIME_LIMIT); 

   

            } 

        }); 

        // 测试超时的线程,为btn2绑定事件 

        btn2.setOnClickListener(new OnClickListener() { 

            @Override 

            public void onClick(View v) { 

   

                proDialog = ProgressDialog.show(MainActivity.this, "提示", 

                        "线程运行中"); 

                // 匿名内部线程 

                thread = new Thread() { 

                    public void run() { 

                        try { 

                            // 线程休眠时间，未超时 

                            Thread.sleep(3000); 

                        } catch (InterruptedException e) { 

                            e.printStackTrace(); 

                        } 

                        Message msgSuc = new Message(); 

                        msgSuc.what = SUCCESS; 

                        myHandler.sendMessage(msgSuc); 

                    } 

                }; 

                thread.start(); 

                // 设定定时器 

                timer = new Timer(); 

                timer.schedule(new TimerTask() { 

                    @Override 

                    public void run() { 

                        sendTimeOutMsg(); 

                    } 

                }, TIME_LIMIT); 

            } 

        }); 

    } 

    // 接收消息的Handler 

    final Handler myHandler = new Handler() { 

        public void handleMessage(android.os.Message msg) { 

            switch (msg.what) { 

            case TIME_OUT: 

                //打断线程 

                thread.interrupt(); 

                proDialog.dismiss(); 

                Toast.makeText(MainActivity.this, "线程超时", Toast.LENGTH_SHORT) 

                        .show(); 

                break; 

            case SUCCESS: 

                //取消定时器 

                timer.cancel(); 

                proDialog.dismiss(); 

                Toast.makeText(MainActivity.this, "线程运行完成", Toast.LENGTH_SHORT) 

                        .show(); 

                break; 

            default: 

                break; 

            } 

        }; 

    }; 

    //向handler发送超时信息 

    private void sendTimeOutMsg() { 

        Message timeOutMsg = new Message(); 

        timeOutMsg.what = TIME_OUT; 

        myHandler.sendMessage(timeOutMsg); 

    } 

   

}