Phone State permissions?

Question

I had this exact same problem:

How permission can be checked at runtime without throwing SecurityException?

For the permission to READ_PHONE_STATE, because I was afraid it would pull an exception for devices which don't have phone compatibility. So, as the answer suggested, I created this method:

   private boolean checkReadPhonePermission() {
        String permission = "android.permission.READ_PHONE_STATE";
        int res = checkCallingOrSelfPermission(permission);

        return (res == PackageManager.PERMISSION_GRANTED);
    }

Which should return true if the device has phone compatability and false if it doesn't. I then wrapped this bit of code which mutes the audio if the user is on the phone, with an if statement based on what the method returns:

For some reason, when I ran this on my emulator and put a toast to see what the method returns, I got false. The emulator device was a phone though, so I expected it to be able to allow that permission...Why is this happening?

@downvoters Thanks for your feedback on my question! I would really appreciate it if you told me what it is about my question that you don't like, so that I can fix it in my future questions! — Ruchir Baronia, Dec 10 '15 at 01:10

score 0 · Answer 1 · answered Dec 10 '15 at 00:32

0

Which should return true if the device has phone compatability and false if it doesn't

Um, no.

If you want to know whether the device has telephony capability, use hasSystemFeature(PackageManager.FEATURE_TELEPHONY) on PackageManager.

answered Dec 10 '15 at 00:32

CommonsWare

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Then how do I use that method suggested by inazaruk in the linked question? – Ruchir Baronia Dec 10 '15 at 00:40
So I tried doing what you said, but now, it is always true! Even on a tablet, where it is impossible to have telephone. – Ruchir Baronia Dec 10 '15 at 02:25
Here is the code I tried out: https://gist.github.com/anonymous/3ab92a621d70e9e05a5c – Ruchir Baronia Dec 10 '15 at 02:28

Phone State permissions?

1 Answers1