Android productFlavorのメモ

flavor毎に異なるソースコード/リソースファイルを使用する

$ tree app/src/

app/src/
├── androidTest
├── ko
│   ├── java
│   │   └── model
│   │       └── Greeter.java
│   └── res
├── main
│   ├── AndroidManifest.xml
│   ├── java
│   │   └── com
│   │       └── example
│   │           └── flavor
│   │               └── MainActivity.java
│   └── res
├── otsu
│   ├── java
│   │   └── model
│   │       └── Greeter.java
│   └── res
└── test

build.gradle

android {
    ...

    productFlavors {
        ko {
            applicationIdSuffix ".ko"
        }
        otsu {
            applicationIdSuffix ".otsu"
        }
    }
    sourceSets {
        ko {
            java.srcDirs = ['src/ko/java']
            res.srcDirs = ['src/ko/res']
        }
        otsu {
            java.srcDirs = ['src/otsu/java']
            res.srcDirs = ['src/otsu/res']
        }
    }

    ...
}

src/main/

MainActivity.java

package com.example.flavor;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

import com.example.nobu.flavor.R;

import model.Greeter;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView textView = (TextView) findViewById(R.id.message);
        textView.setText(Greeter.message());
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/activity_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:paddingBottom="@dimen/activity_vertical_margin"
        tools:context="com.example.flavor.MainActivity">

    <TextView
            android:id="@+id/message"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>
</RelativeLayout>

src/ko

Greeter.java

package model;

public class Greeter {

    public static String message() {
        return "Hello, world";
    }
}

src/otsu

Greeter.java

package model;

public class Greeter {

    public static String message() {
        return "こんにちは、世界!!";
    }
}

src/koを使ってbuild

$ ./gradrew assembleKo

src/otsuを使ってbuild

$ ./gradrew assembleOtsu