检查Android上的网址架构是否存在

Question

I can use skype (or any other) application from my android app with url schemes like 'skype://' .
But can i check existence of schema on user mobile phone? Like canOpenURL in iOS
Thanks.

Answer 1

A scheme is meaningless on its own -- it has to be tied to some action ( ACTION_VIEW , ACTION_CALL , etc.) in an Intent .

Your Java code can call resolveActivity() on PackageManager to determine if any given Intent will be handled by the system if you were to call startActivity() with that Intent .

Answer 2

You can use the following to check if the intent can be handled:

public static boolean intentIsAvailable(Context ctx, Intent intent) {
   final PackageManager mgr = ctx.getPackageManager();
   List<ResolveInfo> list =
      mgr.queryIntentActivities(intent, 
         PackageManager.MATCH_DEFAULT_ONLY);
   return list.size() > 0;
}

usage:

if(intentIsAvailable(appContext, yourIntent)){
   startActivity(intent); 
}