how to open android application if installed and go to android market if not install

Question

I would like to make android button and able to launch other application if already installed and go to android market if not yet installed.

How to do this?

Answer 1

use below code

String packageName = "app_package_name";
Intent intent = getPackageManager().getLaunchIntentForPackage(packageName);

if(intent == null) {
   intent = new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id="+packageName));
}
  startActivity(intent);