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You have completed Intents and Broadcast Receivers!
You have completed Intents and Broadcast Receivers!
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In this video we will see how to handle an intent in an Activity that has been successfully routed by an intent filter.
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Let's go into the detail activity.
0:00
Remember this activity will be
started even from other apps but
0:05
that means that onCreate will be called
and we can check the intent in there.
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What's important to note is that we now
have two different types of intents
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that can start this activity.
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The first is the regular navigation
here from within our app
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which we're already handling.
0:21
The second is this new method.
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So let's add a check here
after we get the intent.
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We can easily check the actions of
an intent with intent.getaction.
0:29
So we'll say if intent.get
action equals and
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then we can use some constants
from the intent class.
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Intent.action_send, let's
add some curly braces.
0:44
And in here, we'll create a new method to
handle this that we'll define in a moment.
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Handle, send intent and
we'll pass in the intent.
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Let's select this, and hit Alt+Enter,
and create the new method, and
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there it is here at the bottom.
1:05
Now back up here the rest of this
code can go in an else block
1:08
because we want to work like it did before
we worried about this text sharing.
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So I'm going to add curly
brace here at the bottom and
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there everything was
automatically indented.
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Now there's one more thing here.
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Notice that I've got a highlight
on these double equal signs.
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That's because these
are actually string values and
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remember we want to compare string
values with the DOT equals method.
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So I'm going to change
this to dot equals and
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put parentheses around intent.action send.
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There we go, now we can get
back to our handle sended pin.
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So in here let's follow the best
practice of checking for null first.
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If intent.getStringExtra and
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the name is intent.EXTRA_TEXT.
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That is the name for
text data when it's shared.
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If it's not equal to null
then we want to show it.
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Let's just display it with a snack bar.
2:04
We will need the root element again which
I've already set with an ID in the starter
2:06
files so up here at the top,
let's add it as a field private
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RelativeLayout layout.
2:16
And we'll set it here in the onCreate
method and root layout equals,
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I'll cast to RelativeLayout,
findViewById(R.id.rootlayout).
2:26
Now back in our method,
we can make a snack bar.
2:34
SnackBar.make, and
then we pass an mRootLayout
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and for our message we wanna
use the text data itself.
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Let's call it the same thing,
intent.getStringExtra.
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And the key we use is intent.EXTRA_TEXT.
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I'm going to add a comma and
again going to drop down to a new line and
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say Snackbar.LENGTH_LONG show at the end.
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So let's run this and see what happens.
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Okay, so the app has started and first
let's dismiss our app because we want to
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share text data from somewhere else.
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Now open the browser.
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And let's just share the URL from up here
I'm going to click on the menu say share
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page and look at that we see our
app down here in the share menu.
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So we'll select it and
here comes detail activity and
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there's our snack bar and
it's got the URL, cool right?
3:35
Sharing the text data is even
easier than location data.
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We don't need to do it here but
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you can check the Android
documentation for example.
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Back on our Intents and filters page,
click on an example implicit intent.
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And here we see some sample code
to share text via an intent.
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Here's ActionSend just like we saw on
the other end, and the mimeType, and
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the data itself with
the intent.EXTRA_TEXT key.
4:01
That's basically the same code that
was used to share the URL inside
4:04
the browser app.
4:07
Well done, so
far we've seen how to send and
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receive data via two different
intents provided by Android.
4:12
But what if we want to send and receive
totally custom data between two apps?
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As always, there's an intent for that.
4:20
Let's check it out after the break.
4:22
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