Android - switch to activity without restarting it

Question

I am programming a chat program for android.

I have the contact list as one activity and the chat windows as a second activity. I use startActivity to switch to the chat activity, but the chat activity gets reloaded every time. Therefore the screen gets cleared.

Is there a way to switch to a running activity without having to restart it?

private Intent myIntent = null;

…

 if (myIntent == null) myIntent = new Intent(HanasuAndroidActivity.activity, ChatWindow.class); this.startActivity(myIntent);

Too complicated. I would use one activity and consider something like ViewFlipper — Lumis
– Lumis, Commented Dec 31, 2011 at 12:45

CommonsWare · Accepted Answer · 2011-12-31 13:31:40Z

Add FLAG_ACTIVITY_REORDER_TO_FRONT to your Intent. That will bring the existing activity instance to the foreground if it exists or create a new one if it does not exist.

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