How can I wait for 10 second without locking application UI in android [duplicate]

问题

This question already has an answer here:

How do you have the code pause for a couple of seconds in android? 1 answer

I am stuck with a problem, I want to wait 10 second because I want my application to start the code below after that 10 sec but without stopping that person from clicking anything else in the application (without calling Thread.sleep();).

try {
    Log.v("msg", "WAIT CheckFrequencyRun");
    Thread.sleep(10000); // giving time to connect to wifi
    
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   //if no network
   if(wifiManager.getConnectionInfo().getNetworkId()==-1){
    //stop wifi
    wifiManager.setWifiEnabled(false);
    Log.v("msg", "no connection");
    handler.postDelayed(this, checkInterval);
   }
   //else connection
   else{
    Log.v("msg", "connection");
    onDestroy();
   }

回答1:

You never want to call thread.sleep() on the UI thread as it sounds like you have figured out. This freezes the UI and is always a bad thing to do. You can use a separate Thread and postDelayed

This SO answer shows how to do that as well as several other options

Handler

TimerTask

You can look at these and see which will work best for your particular situation

回答2:

You can use this:

Handler handler = new Handler();
handler.postDelayed(new Runnable() {
    public void run() {
     // Actions to do after 10 seconds
    }
}, 10000);

For Stop the Handler, You can try this: handler.removeCallbacksAndMessages(null);

回答3:

do this on a new thread (seperate it from main thread)

 new Thread(new Runnable() {
     @Override
     public void run() {
        // TODO Auto-generated method stub
     }
}).run();

回答4:

1with handler:

handler.sendEmptyMessageDelayed(1, 10000);
}

private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        if (msg.what == 1) {
           //your code
        }
    }
};

来源：https://stackoverflow.com/questions/17237287/how-can-i-wait-for-10-second-without-locking-application-ui-in-android

标签

java

android

wait