CODEWITHSUNDEEP
android
Tyler
Tyler

Reputation: 31667

Clarification on Android Activity Lifecycle

Can someone clarify - if in my activity, I leave to call an intent via startActivityForResult (such as take a picture), when users return to my app, what is the entry point for that activity? Is it onCreate, onStart, or onResume?

Thanks!

Upvotes: 2

Views: 1276

Answers (2)

Isaac Hildebrandt
Isaac Hildebrandt

Reputation: 1026

If the original activity is never stopped, it reenters via onResume(). If it is stopped it reenters via onRestart() -> onStart() -> onResume().

startActivityForResult shouldn't stop the original activity.

Upvotes: 4

Steve Haley
Steve Haley

Reputation: 55714

Normally, it will be onResume() followed by onActivityResult(). However it's possible, though unlikely, that the calling activity will have been killed at some point while the user worked with the other activity; this happens when the system runs out of memory, at which point it starts killing stuff, starting from the 'most inactive'. In that case, I imagine it would go through onCreate(), onStart(), onResume() and then finally onActivityResult().

The exact callback for onActivityResult() is:

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    //Your code here
}

Upvotes: 3

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