How to call one android application from another android application

Question

I want to call one android application from another application

I have tried some examples, but they are not working for me, I\'m getting a Package parse error.

Answer 1

Intent i4=new Intent(Intent.ACTION_MAIN);

PackageManager manager = getPackageManager();

i4 = manager.getLaunchIntentForPackage("com.apk");//apk name

i4.addCategory(Intent.CATEGORY_LAUNCHER);

startActivity(i4);