[android-developers] Re: Keep app from restarting when touching icon from Home screen

I think this is an Android bug. I have seen this so many times on differnt devices (more frequently on older ones). Common pattern is more often than not tapping the app icon as normal will launch the MAIN LAUNCHER activity on the top of the existing stack but occasionally will resume - i see this much less on ICS/JB (if at all). I have seen this across many apps including the one I am currently working on. On my JB device it works as Diane says it should - on my 2.3 if has the issue described above. Quite annoying. Probably a few potential solutions but its at least worth clearing the existing stack on launch to save the back button making no sense (especially if your app has some gateway login or something where back press from a login screen would be taking you to a logged in state instead of back to the home screen)

On Tuesday, 10 March 2009 16:44:10 UTC, Hayden wrote:

I want my application to resume what it is doing regardless of where I
press the icon (Home screen, app picker, or running apps).  Right now
if my app is in the background and I press the icon on the home
screen, the app restarts with my Main Activity.  Once here, if I press
the back button the app resumes from the activity it left off before
it was put in the background.  If it's running in the background and I
hold the home button and select my app from the current running apps,
it resumes correctly.

How do I avoid my app from going to my Main activity when it is
selected from the Home screen or app picker?  I have tried adding the
following in my Manifest XML file, but it doesn't help:

<activity android:name=".Main"
                          android:launchMode="singleTask"
                          android:alwaysRetainTaskState="true"
                  android:label="@string/app_name">


Any help would be greatly appreciated!

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