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I asked a similar question to this earlier this week but I'* still not understanding how to get a list of all installed applications and then pick one to run.

I've tried:

Intent intent = new Intent(ACTION_MAIN);
intent.addCategory(CATEGORY_LAUNCHER);

and this only shows application that are preinstalled or can run the ACTION_MAIN Intent type.

I also know I can use PackageManager to get all the installed applications, but how do I use this to run a specific application?

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Following is the code to get the list of activities/applications installed on Android :

Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> pkgAppsList = context.getPackageManager().queryIntentActivities( mainIntent, 0);
You will get all the necessary data in the ResolveInfo to start a application. You can check ResolveInfo javadoc here.
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