I want to check to see if an activity is running or finished. Is there any method through which I can check the status of activity?
I found activity.isFinishing() but I am not sure about it.
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harry_p_6
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Connecting life with Android
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Can you say exactly what you want to do in your project so i can get some clear idea to solve your query.. – Harsh Trivedi Jan 06 '12 at 11:13
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running can take all matters of form, so i would be best know your purpose here. – njzk2 Jan 06 '12 at 11:14
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some times we get window token error because activity get finish and dialog box still called so before calling dialog i want to check whether activity is running or not. – Connecting life with Android Jan 09 '12 at 05:08
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@ConnectinglifewithAndroid How did you solve this problem ? – Amit Dec 13 '12 at 05:59
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3Using activity.isFinishing() is the right one solution. it return true if activity is finished so before creating dialog check for the condition. if true then create and show dialog. – Connecting life with Android Dec 14 '12 at 05:44
2 Answers
19
If you want to perform any step before Activity is going to become invisible.
Their are several choices here.
onDestroy() - for final cleanup.
isFinishing() - right after act.finish() is called it will return true.
onStop() - when the Activity is killed by framework process. (not destroyed)
onPause() - when the Activity is covered by any other Activity
onBackPressed() - capturing the event of hardware Back key triggered by user.
MKJParekh
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Adil Soomro
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9There is also `isDestoyed()` (added in API 17) http://developer.android.com/reference/android/app/Activity.html#isDestroyed%28%29 – Jared Rummler Sep 05 '15 at 07:46
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Yes, it was released later, so that's why its not included in the answer. Thanks for mentioning. – Adil Soomro Sep 05 '15 at 10:33
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I think the expression 'killed' can cause some confusion. For example, `onStop()` is called when another application comes to the foreground. But the Activity's state is maintained, so it's not killed :) – starriet Feb 05 '21 at 16:09
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Call isFinishing in the onPause method before the activity is destroyed:
@Override
protected void onPause() {
super.onPause();
if (isFinishing()) {
// Here you can be sure the Activity will be destroyed eventually
}
}
live-love
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