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We've completed our content provider and
we're using it to serve up our data.

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But so far, it's only being used by
this one app and there's not much reason

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to use a content provider if you're
only going to use it in one app.

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So, let's make another.

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Let's create a new project.

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And let's name it ContentProviderAccessor.

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Then let's accept all the defaults and
create the project.

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To keep things simple we're just going to
steal all the code we need from the other

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project.

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Let's start with the layout.

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For this app we're only going
to show the list part of the UI.

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So over in content providers activity
main.xml, let's just copy the scroll view,

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And then end Content Provider accessor,

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Let's just paste it in
over the Hello World!

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TextView.

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Grooving on to main activity,
let's copy over the update list and

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get new TextView functions.

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Then let's also copy over our linear
layout field and the line where we set it.

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Finally, let's add a call to update
list at the bottom of onCreate.

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All that's left is filling in
the content URI and the column names.

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So let's get rid of these three
classes that don't exist.

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And then let's copy over our database
information from database helper.

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And then our content URI
from our content provider.

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And let's delete this
reference to database helper.

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Now when we run this new app,

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we should be able to see the data
from our content provider.

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But also, we might get an error.

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And if we look through the log

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It looks like we got a security exception
caused by a denied permission and

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then it says it's opening our provider But
that it's not exported.

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If you want a content provider to
be available to other applications,

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then it needs to be exported.

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To do this we just have to set
the exported flag in our manifest.

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So over in our original
app In the manifest,

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inside our provider, let's add
the exported flag and set it to true.

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Then let's run this app to update
the content provider on the device.

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And once that's done,
let's run the other app and

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hopefully we should be
able to see our data.

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Awesome, we just accessed data that
lives in an entirely different process.

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And we did it by using a content provider.

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After all that's exactly what they're for.

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If you want to connect data from
one process with code from another,

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that's your cue to use a content provider.

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On the other hand if
everything's staying in one app,

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you can still use a content provider but
I probably wouldn't.

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If you've got any questions or

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ideas about how to use a content provider,
be sure to post them in the community.

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Until next time.