Question

In one of my apps I’m using the following code to issue a phone call:

Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(...)); 
startActivity(intent);

The docs say I do need the following Manifest permission to do so:

<uses-permission android:name="android.permission.CALL_PHONE" />

Is this really required? I do not understand the difference between a phone and a camera feature. When using a phone intent I do need a permission but I don’t need permission for a camera intent:

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
...
startActivityForResult(intent, 1);

Is there a list on hardware features that need a permission if fired with the help of an intent and those that don’t?

Answer 1

Is this really required?

Yes.

I do not understand the difference between a phone and a camera feature.

Phone calls can cost people money. Hence, if you directly place a phone call (vs. ACTION_DIAL to just put the number in the dialer), Android wants the user to agree ahead of time to allow this.

Taking pictures with the camera does not usually directly cost users any money.

Is there a list on hardware features that need a permission if fired with the help of an intent and those that don’t?

Not really.