how can i launch a app form other on Android

Question

How I can launch a Twitter application from another Android application? For example, in my application I have some social buttons when I pushed the button of Twitter now gone to twitter page, but I want to launch the twitter application. How I can do that?

Answer 1

You need to use an intent, check here: http://developer.android.com/reference/android/content/Intent.html

Answer 2

You can try this:

try {
   startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("twitter://user?screen_name=" + twitter_user_name)));
}catch (Exception e) {
   startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://twitter.com/#!/" + twitter_user_name)));
}

Answer 3

You should use an implict intent.you can read about it in general here, and there is a more specific solution for you here