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Let's take a look at the starter files we need to work on the Music Machine app for this course.
If you already have the app as a project from an earlier course then you may want to use that for this course, but you'll need a few things for some of these examples. I'd recommend using the version of the project supplied here:
If you need a refresher on Git and/or GitHub, check out the following material:
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If you already have the MusicMachine app
as a project from an earlier course,
0:00
then you may want to use that for
this course.
0:04
But you'll need a few things for
some of these examples.
0:06
I'd recommend starting with the version
of the project I'm supplying here, but
0:09
the starter code is available on GitHub
if you want to copy new things as needed
0:13
into your own project.
0:17
With that said, check the links in
teacher's notes for the starter files.
0:18
Take a moment to download them or
clone the project from GitHub and
0:22
then we can walk through opening it up for
the first time together.
0:25
Importing a project can
be kind of a headache
0:30
when the Gradle settings have changed,
which they often do.
0:32
If nothing else follow along to see how
to troubleshoot some common issues and
0:35
if you get stuck ask for
help from the treehouse community.
0:39
All downloaded?
0:43
Cool, I've got Android Studio open here.
0:44
As usual, don't worry if your
version of Android Studio
0:47
is a little different
than what you see here.
0:49
Our developer tools
are constantly evolving, but
0:52
the main pieces will still be the same.
0:54
More importantly, the code and concepts
we are covering here are less volatile.
0:56
So even if the tools are a little
bit different, the code and
1:00
ways to solve problems will still apply.
1:03
So I want to open an existing
Android Studio project and
1:06
I cloned mine from GitHub in
the development directory.
1:09
So I'll select the project and click OK.
1:12
Cool.
1:17
You may see a warning up at the top about
the Android SDK if you do just click OK.
1:18
It happens sometimes
because the SDK settings
1:23
in the project of the original author
may be different than your own.
1:26
So the first thing we usually need
to do when we import a project,
1:30
is to fix it's Gradle settings.
1:33
You're probably familiar with this
already, but let's walk through it.
1:35
Down here we see that the project
currently expects a different version
1:38
of the Android build tools.
1:41
We could install this version here,
but it's an older version and
1:43
we usually want it to update
to the latest version.
1:46
So instead, let's open up
the build.gradle file for our app.
1:49
Click on Project and, well, there
are multiple build.gradle files in here so
1:53
how do we know which one to use?
1:57
Well, click into App and
this is the one for our app project so
1:59
double click on build.gradle and here we
see the value for our build tools version.
2:03
Next question, how do we know what the
latest value is that we should use here?
2:08
We can check in the SDK manager.
2:13
So click up here on the little down arrow
for the SDK manager then click on SDK
2:15
tools and up here at the top we have
the Android SDK build tools and, this
2:20
one is telling me that I have an update
available on an early release channel.
2:25
Well, I want to ignore that for now.
2:30
To see my current version, and
2:31
you may need to do this too, click on Show
Package Details down here, and then scroll
2:33
through the list to see what the highest
number is that you have installed.
2:38
So here you see the check
box I have mine as 23.0.3.
2:41
So click OK, go back to the file
2:43
update to the latest version and
then let's sync our changes.
2:46
No, another error!
2:53
This older version of the project
is using an older version
2:54
of the Android Gradle plugin.
2:57
If you see this,
feel free to click Update.
2:59
That will fix the setting and the Gradle
sync should now complete successfully.
3:02
Whoops, we have one more error.
3:05
Go ahead and click on Fix Gradle Wrapper
and re-import the project and
3:07
it'll sync again, and
this time we're good to go.
3:11
Let's run it to make
sure that it's working.
3:15
Click on the Run button, and
I already have my emulator running so
3:17
I'm going to click that and
select Use same selection.
3:20
Click Okay, and now I'll bring my
emulator onto the screen as it loads.
3:24
Okay, so here's our app.
3:33
Looks like it's working.
3:35
We're ready to go.
3:36
Coming up next we'll revisit how to
pass data from one activity to another.
3:37
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