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1. Authenticating apps sending intents on the receiving en

Package name is NOT a secure identity.  Only one package with a given name
can be installed, but nothing prevents someone from writing another package
with the same name and installing it -instead-.

The global secure identity for an app is its package name + signing cert.

For purely running on a particular device, the uid is the security sandbox
level, so the only thing you need to deal with to ensure security.  The only
thing you'd need to take care of is remove information about a uid when it
gets uninstalled (There's a Broadcast For That(tm)), so that when a new app
gets installed with that same (no longer used) uid you don't confuse it with
the old app.

Dianne Hackborn
Android framework engineer

Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails.  All such
questions should be posted on public forums, where I and others can see and
answer them.

2. Questions/Help with Long Running Service Please

Hi everyone,

I have an app that has a service with it. This service is started the
first time you open the app is is suppose to run continuously in the
background every two minutes. It seems that at some point though the
service stops running or alarmManager stops scheduling/doing what is
requested of it. Here is a breakdown of my code flow.

User opens the app,.
Service is started,
Inside the service I cancel any alarms that might be for this app then
create a new one set for two minutes out,
Once the alarm is set I call a GPS location check to get lat/lon,
I then call up a .net web service to do some stuff with the lat/lon,
Once text is returned I check that text for certain Items,
If a certain item is found I send a broadcast out to a receiver that
then creates a wakelock, starts a new intent to open an activity of my
app then sounds an alarm,
Right after I broadcast I call stopSelf() as well as calling
stopSelf() if the text did not contain certain Items,
I call finish() on the new activity I started if we go that far once
the Active screen of my app is closed.

The reason I think something is dieing out here is because after some
point in time usually once I wake up in the morning and check the
phone I no longer see my GPS icon on my droid checking every two

Does anyone have any idea as to why this might be stopping at some
point? Are there any tips on creating long running services like this
or am I doing anything wrong in my process? Maybe I am missing
something in how my Code flow should be set up as I am new to Android
development. Any input/help/comments/constructive criticism would be
most appreciated!



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