Question

I have an activity which shows an image (ViewCollection.java). I want to only create it once, then re-use that instance to further show more images from different calls (The activity is expensive to initialize).
So far, I launched the activity like this:

Intent i = new Intent(this, ViewCollection.java);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);

And all activity calls from the ViewCollection activity are also called by the same method.
But despite this, the activity keeps getting destroyed when I start other activities from it…
What can I do to fix this?

*PS: The activity is set to “standard” launch mode

Answer 1

Set the activity launchmode to singletop or set the flag FLAG_ACTIVITY_SINGLE_TOP .
Handle the intent in onNewIntent()
You can get further details here

Edit: Though if back key is pressed on the activity or configuration changed since last time you entered the app, the activity will still be recreated