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====== VIM1 Download The Android Source Code ======

The Android Source Tree of our Khadas VIMs are hosted on [[https://www.github.com/khadas|Github]]. There are many different repositories.Walk through the steps below to download the source code.

===== Steps =====

Firstly, install ''git-lfs'' tool for downloading Android SDK.

```shell
$ mkdir git_lfs
$ cd git_lfs
$ wget https://github.com/git-lfs/git-lfs/releases/download/v2.3.4/git-lfs-linux-amd64-2.3.4.tar.gz
$ tar xvzf git-lfs-linux-amd64-2.3.4.tar.gz
$ cd git-lfs-2.3.4
$ sudo ./install.sh
$ git lfs install
```

Create an empty directory to hold your working files:

```shell
$ mkdir -p WORKING_DIRECTORY
$ cd WORKING_DIRECTORY
```

Run ''repo init'' to download the manifest repository first:

<tabbox Android M(6.0)>

```shell
$ repo init -u https://github.com/khadas/android_manifest.git -b Mmallow
```

<tabbox Android N(7.1)>

```shell
$ repo init -u https://github.com/khadas/android_manifest.git -b Nougat
```

<tabbox Android P(9.0)>

```shell
$ repo init -u https://github.com/khadas/android_manifest.git -b khadas-vims-pie
```
</tabbox>

Run ''repo sync'' to pull down the Android source tree:

```shell
$ repo sync -c -j4
```
The initial sync operation may take an hour or more to complete.


<WRAP tip >
You might need to run above command repeatly if it fails halfway. Or you can try with this script instead.
```shell
#!/bin/bash
repo sync -c -j4
while [ $? = 1 ]; do
	echo "Sync failed, repeat again:"
	repo sync -c -j4
done
```
If needed, press ''Ctrl''+''\'' to quit.

</WRAP>

Begin a new branch for development:

```shell
$ repo start <BRANCH_NAME> --all
```

===== See Also =====

  * [[https://source.android.com/source/downloading.html|Android Official Documents]]
  * [[/products/sbc/vim1/development/android/build-android|Build Android]]