CODEWITHSUNDEEP
androidandroid-activity
Arnab Bhagabati
Arnab Bhagabati

Reputation: 2725

Difference between recreating an Activity with recreate() method and startActivity(getIntent())

I am more or less a beginner in android programming

My Question follows from this post.

As far as I can gather, there are mainly two ways to restart the same Activity I am in:

a)Activity.recreate() [ added after API 11 ]

b) 

Intent intent = getIntent();
    finish();
    startActivity(intent);

How does these two actually work? Are there any difference in the process they recreate the activity?

I believe there must be some difference between the way these two recreates the activity, because, I have seen that recreate() adds some default(junk?) values to the views in my activity. Also, recreate() starts the new activity with a default black splash view

Upvotes: 18

Views: 13846

Answers (1)

Abs
Abs

Reputation: 3962

Recreate - (You can restore state of activity) This results in essentially the same flow as when the Activity is created due to a configuration change -- the current instance will go through its lifecycle to onDestroy() and a new instance then created after it. It also means ViewModel is not destroyed.

The recreate() method acts just like a configuration change, so your onSaveInstanceState() and onRestoreInstanceState() methods are also called, if applicable.

Very interesting read: http://developer.android.com/training/basics/activity-lifecycle/recreating.html

vs

Finish The ActivityResult is propagated back to whoever launched you via onActivityResult(). and Started again as new activity on top of the stack

Upvotes: 15

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