Question

In my android application, how can I forward user to android market to install another application and after they install it, they come back to my activity?

Answer 1

You need to start an Activity with Intent pointing to market:

String packageName = "com.stackoverflow.example";
Uri marketUri = Uri.parse("market://search?q=pname:" + packageName);
Intent marketIntent = new Intent(Intent.ACTION_VIEW).setData(marketUri);
startActivity(marketIntent);

Replace com.stackoverflow.example with package name of target application.