首先笑跛，大家在開發(fā)的時(shí)候，有時(shí)候做一些耗時(shí)任務(wù)時(shí)聊品，難免會(huì)用到線程【Thread】,以免阻塞主線程飞蹂。但是，有時(shí)候杨刨，我們只希望這個(gè)在線程里面執(zhí)行的任務(wù)晤柄，不能太長(zhǎng)，意思就是說妖胀，我需要在這個(gè)線程執(zhí)行一段時(shí)間后芥颈，無論有沒有完成我制定的任務(wù)，都要講線程終止掉赚抡。這個(gè)時(shí)候又要用到【Timer】了爬坑。

變量聲明：

    private static final int TIME_LIMIT = 15000; // 登陸超時(shí)時(shí)間 15秒
    Timer timer;
    Thread thread;

 final Handler myHandler = new Handler() {
        @Override
        public void handleMessage(android.os.Message msg) {
            switch (msg.what) {
                case TIME_OUT:
                    // 打斷線程
                    thread.interrupt();
                    if (dialog != null) {
                        dialog.dismiss();
                    }
                     // deal with what you should do after thread job is failed
                    break;
                case SUCCESS:
                    // 取消定時(shí)器
                    if (timer != null) {
                        timer.cancel();
                    }
                    if (dialog != null) {
                        dialog.dismiss();
                    }
                    // do what you want after thread job is successed
   
                    break;
                default:
                    break;
            }
        }
    };

具體方法：

 timer = new Timer();

 thread = new Thread(new Runnable() {
                @Override
                public void run() {   
                      if(doYourJob())              
                        //after work  is done...
                        Looper.prepare();
                        sendSuccessMsg();
                        Looper.loop();
                    } else {
                        //work is fail
                        errorDialog( "sorry work is not done !");
                    }
                }
            });

            thread.start();
            // 設(shè)定定時(shí)器
            timer.schedule(new TimerTask() {
                @Override
                public void run() {
                    sendTimeOutMsg();
                }
            }, TIME_LIMIT);

補(bǔ)充：

    /**
     * 錯(cuò)誤對(duì)話框
     *
     * @param errorText
     */
    private void errorDialog(String errorText) {
        if (dialog != null) {
            dialog.dismiss();
        }
        AlertDialog.Builder builder = new AlertDialog.Builder(this); // 先得到構(gòu)造器
        builder.setTitle("提示"); // 設(shè)置標(biāo)題
        builder.setMessage(errorText); // 設(shè)置內(nèi)容
        builder.setPositiveButton("確定", new DialogInterface.OnClickListener() { // 設(shè)置確定按鈕
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss(); // 關(guān)閉dialog
            }
        });
        // 參數(shù)都設(shè)置完成了，創(chuàng)建并顯示出來
        builder.create().show();
    }

    /**
     * // 向handler發(fā)送超時(shí)信息
     */
    private void sendTimeOutMsg() {
        Message timeOutMsg = new Message();
        timeOutMsg.what = TIME_OUT;
        myHandler.sendMessage(timeOutMsg);
    }
  /**
     * // 向handler成功信息
     */
  private void sendSuccessMsg() {
        Message timeOutMsg = new Message();
        timeOutMsg.what = SUCCESS;
        myHandler.sendMessage(timeOutMsg);
    }