This question already has an answer here:
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();
}
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
You can look at these and see which will work best for your particular situation
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);
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();
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