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Android: Add detailed instructions for setting up a build environment
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AndroidSetup.md
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AndroidSetup.md
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# How to Set Up an Android Development Environment
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If you'd like to contribute to the Android project, but do not currently have a development environment setup, follow the instructions in this guide.
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## Prerequisites
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* A Linux VM or host, or a Mac.
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* JDK 7 for your platform.
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* CMake
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* [Android NDK](https://developer.android.com/tools/sdk/ndk/index.html)
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* [Android Studio](http://developer.android.com/tools/studio/index.html) **OR**
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* [Android SDK Tools](http://developer.android.com/sdk/index.html#Other) (for command-line usage)
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If you downloaded Android Studio, extract it and then see [Setting up Android Studio](#setting-up-android-studio).
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If you instead chose to download the commoand-line SDK tools, see [Setting up the SDK Tools](#setting-up-the-sdk-tools).
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## Setting up Android Studio
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1. Launch Android Studio, which will start a first-launch wizard.
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2. Choose a custom installation.
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3. If offered a choice of themes, select your preference.
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4. When offered a choice of components, uncheck the "Android Virtual Device" option. ![Android Studio Components][components]
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5. Accept all licenses, and click Finish. Android Studio will download the SDK Tools package automatically. (Ubuntu users, if you get an error running the `mksdcard` tool, make sure the `lib32stdc++6` package is installed.)
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6. At the Android Studio welcome screen, click "Configure", then "SDK Manager".
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7. Use the SDK Manager to get necessary dependencies, as described in [Getting Dependencies](#getting-dependencies).
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8. When done, follow the steps in [Readme.md](Readme.md#installation-on-android) to compile and deploy the application.
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## Setting up the SDK Tools
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1. In `Source/Android`, create a file called `local.properties`.
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2. Add a single line: `sdk.dir=<sdk-path>`, where `<sdk-path>` is the path where you extracted the SDK Tools package.
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3. Follow the steps in [Readme.md](Readme.md#installation-on-android) to compile and deploy the application.
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## Executing Gradle Tasks
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In Android Studio, you can find a list of possible Gradle tasks in a tray at the top right of the screen:
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![Gradle Tasks][gradle]
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Double clicking any of these tasks will execute it, and also add it to a short list in the main toolbar:
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![Gradle Task Shortcuts][shortcut]
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Clicking the green triangle next to this list will execute the currently selected task.
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For command-line users, any task may be executed with `Source/Android/gradlew <task-name>`.
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## Getting Dependencies
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Most dependencies for the Android project are supplied by Gradle automatically. However, Android platform libraries (and a few Google-supplied supplementary libraries) must be downloaded through the Android package manager.
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1. Launch the Android SDK Manager from the commandline by executing `<sdk-path>/tools/android`, or by clicking on its icon in Android Studio's main toolbar:
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![Android Studio Package Icon][package-icon]
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2. At the bottom of the window, click "Deselect All", and then "Updates".
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3. Install or update the following packages:
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* SDK Platform, under "Android 5.0.1 (API 21)". This will allow compiling apps that target Lollipop.
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* Android Support Repository
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* Android Support Library
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* Google Repository
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In the future, if the project targets a newer version of Android, or use newer versions of the tools/build-tools packages, it will be necessary to use this tool to download updates.
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[components]: http://i.imgur.com/Oo1Fs93.png
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[package-icon]: http://i.imgur.com/NUpkAH8.png
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[gradle]: http://i.imgur.com/dXIH6o3.png
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[shortcut]: http://i.imgur.com/eCWP4Yy.png
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42
Readme.md
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Readme.md
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On Linux, it's strongly recommended to perform a global installation via `sudo make install`.
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## Installation on Android
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Dolphin requires [Android Studio](http://developer.android.com/tools/studio/index.html) to build
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the Android UI. Import the Gradle project located in `./Source/Android`, and then execute the
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Gradle task `assembleDebug` to build, or `installDebug` to install the UI onto a connected device.
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In order to launch the app, you must build and include the native Dolphin libraries into the UI project.
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(Building native code requires the [Android NDK](https://developer.android.com/tools/sdk/ndk/index.html).)
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Android Studio will do this for you if you create `Source/Android/build.properties`, and place the
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following inside:
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These instructions assume familiarity with Android development. If you do not have an
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Android dev environment set up, see [AndroidSetup.md](AndroidSetup.md).
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If using Android Studio, import the Gradle project located in `./Source/Android`.
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Android apps are compiled using a build system called Gradle. Dolphin's native component,
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however, is compiled using CMake. The Gradle script will attempt to run a CMake build
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automatically while building the Java code, if you create the file `Source/Android/build.properties`,
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and place the following inside:
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```
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makeArgs=<make-args>
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# Specifies arguments for the 'make' command. Can be blank.
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makeArgs=
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# The path to your machine's Git executable. Will autodetect if blank.
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gitPath=
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# The path to the extracted NDK package. Will autodetect if blank.
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ndkPath=
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# The path to the CMake executable. Will autodetect if blank.
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cmakePath=
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```
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Replace `<make-args>` with any arguments you want to pass to `make`. If you need to use a specific
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version of git, cmake, or the NDK, you can also add `gitPath=<path>`, `cmakePath=<path>` or
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`ndkPath=<path>`, replacing `<path>` with the actual paths. Otherwise, these will be found
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automatically. Then execute the `assembleDebug` or `installDebug` task corresponding to the
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hardware platform you are targeting. For example, to deploy to a Nexus 9, which runs the AArch64
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architecture, execute `installArm_64Debug`. A list of available tasks can be found in Android
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Studio in the Gradle tray, located at the top-right corner of the IDE by default.
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If you prefer, you can run the CMake step manually, and it will copy the resulting
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binary into the correct location for inclusion in the Android APK.
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The native libraries will be compiled, and copied into `./Source/Android/app/libs`. Android Studio
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and Gradle will include any libraries in that folder into the APK at build time.
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Execute the Gradle task `assembleArm_64Debug` to build, or `installArm_64Debug` to
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install the application onto a connected device. If other ABIs are eventually supported,
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execute the tasks corresponding to the desired ABI.
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## Uninstalling
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When Dolphin has been installed with the NSIS installer, you can uninstall
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