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The app works just fine,
what else could we want?

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Well sometimes a user
will deny a permission

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because they don't know
why it's necessary.

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And in these cases it's
up to us the developers

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to help the user understand
why we need that permission.

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To make this easier for us,

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Android contains a method which returns
true if the user has denied a permission.

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Let's see how that works.

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Back in the on click method above
our call to request permissions,

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let's add an if statement and
then for the condition,

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let's type should show request
permission rationale and

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00:00:38,160 --> 00:00:42,880
then let's pass in our permission
manifest dot permission dot call phone.

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If this is true it means the user
has already denied our request.

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00:00:49,960 --> 00:00:52,690
And we should probably tell
them why we need the permission

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before requesting it again.

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On the other hand if this is false,

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then we should just request
the permission normally.

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00:00:59,630 --> 00:01:02,625
So let's add an else block around
our call to request permissions.

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Lastly inside the if statement,

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we just need to explain to our users,
why we need the permission.

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To do this let's use an alert dialog, I
put one down below in the teacher's notes.

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It's just a simple dialog that tells
the user why we need the permission and

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ask them if they'd be willing to grant it.

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I'm gonna choose alt enter to
import the missing pieces.

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And all we've got to do to finish the
dialog is fill in the on click methods.

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If a user clicks on the positive button

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then they're willing to
grant the permission.

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So for the positive buttons on
click method, let's copy and

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paste in our call to request permissions.

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Otherwise if they click the negative
button, there's not much we can do so

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let's just toast a sad face.

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Nice, now before we run the app again
make sure to first uninstall it from your

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device so
it won't already have the permission.

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Once that's done, let's run the app and

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then click the call button and
choose to deny the permission.

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Then if we click the button again
We get our alert dialog and

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clicking no thanks will
give us a sad face.

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But if we try to call again and

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instead click yes then we get another
chance to allow the permission.

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And if we allow it this time then
we're making our call, great work.

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Using permissions definitely got a little
harder with Android marshmallow but

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that's no excuse not to implement them.

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They're fairly easy to use and they
provide a much better user experience.

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So get out there and

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start updating your apps to use the new
permissions model until next time.