如何用Android Java制作倒计时器？

有没有可能制作一个带祝酒或进程对话框的倒计时计时器

当我启动我的应用程序时，会弹出一个带有文本加载的ProgressDialog。。。在加载数据之前，我会关闭对话框和带有文本视图等内容的listview弹出窗口

但在启动时，我会检查我的网络状态。。。当网络连接后，我开始我的后台课程。。但如果不是，我会用计时器每10秒重新启动一次活动（如下所示）。但是，如果没有连接，我将显示一个计数器向下的土司或更改对话框中的文本，例如：（show->）“10后自动刷新…”（“9后自动刷新…”直到“0后自动刷新…”，然后10秒过去..带finish（）的行开始

这都在我的onCreate中：

            global.loading_dialog(this); //start progressdialog

        boolean network_connected = false;

    if(check_network.isInternetAvailable(this)) {   
        network_connected = true;
        new connect_task_main().execute(""); //the background class starts
    } else {      
        network_connected = false;
        global.toast.setText("No Internet Connection"); //toast text
        global.toast.show(); //toast start
        global.cancel_toast(2500); //toast stop
    }   

    if (network_connected == false) {
    final Timer timer = new Timer();
            timer.schedule(new TimerTask() {
        public void run() {
            global.spinning_dialog.dismiss(); // when the task activates, then close the dialog
            timer.cancel(); //stop de timer
        finish(); //close the activity
        startActivity(new Intent(main_activity.this, main_activity.class)); //start a new activity
        }
    }, 10000); //after 10 seconds, the task will be active.
} else {
}   

        if (network_connected == false) {
     new CountDownTimer(12000, 1000) {
         public void onTick(long millisUntilFinished) {
             global.toast.setText("Automatic Refresh In: " + millisUntilFinished / 1000);
        global.toast.show();
         }

         public void onFinish() {
            finish();
        startActivity(new Intent(main_activity.this, main_activity.class));
         }
      }.start();
    } else {
    }

---

您可以使用

处理程序

每秒调用一次，当调用10次时，您可以更改

活动

这样做：

final int i = 0;
Handler handler = new Handler();
Runnable runnable = new Runnable() {
   @Override
   public void run() {
      // Display the time like : textView.setText("Automatic refresh after " + 10 - i +"...");
      if (i == 10)
      {
        global.spinning_dialog.dismiss(); // when the task activates, then close the dialog
        finish(); //close the activity
        startActivity(new Intent(main_activity.this, main_activity.class)); //start a new activity
      }
      else
      {
         i++;
         handler.postDelayed(this, 1000); // Call it 1 second later
      }
   }
};
handler.postDelayed(runnable, 0); // Call it immediatly

---

Android确实有现成的

，这要感谢@giant00的回答：

我更改了部分代码（如下所示）：

            global.loading_dialog(this); //start progressdialog

        boolean network_connected = false;

    if(check_network.isInternetAvailable(this)) {   
        network_connected = true;
        new connect_task_main().execute(""); //the background class starts
    } else {      
        network_connected = false;
        global.toast.setText("No Internet Connection"); //toast text
        global.toast.show(); //toast start
        global.cancel_toast(2500); //toast stop
    }   

    if (network_connected == false) {
    final Timer timer = new Timer();
            timer.schedule(new TimerTask() {
        public void run() {
            global.spinning_dialog.dismiss(); // when the task activates, then close the dialog
            timer.cancel(); //stop de timer
        finish(); //close the activity
        startActivity(new Intent(main_activity.this, main_activity.class)); //start a new activity
        }
    }, 10000); //after 10 seconds, the task will be active.
} else {
}   

        if (network_connected == false) {
     new CountDownTimer(12000, 1000) {
         public void onTick(long millisUntilFinished) {
             global.toast.setText("Automatic Refresh In: " + millisUntilFinished / 1000);
        global.toast.show();
         }

         public void onFinish() {
            finish();
        startActivity(new Intent(main_activity.this, main_activity.class));
         }
      }.start();
    } else {
    }

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@RDC也许帮助我更好，试着给出一个好的答案。。？！