1.工程目录结构
说明：如果项目有多个library工程并且有可能重复引用了相同的jar包，如support-4等，需要将这些jar单独拎出来作为一个BaseLibray，其他library引用这个BaseLibrary，如果不这样做很有可能在编译的时候遇到下面这样的错误:
UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: Landroid/support/v42.Eclipse下自动生成相关文件
File -> Export -> Android -> Generate Gradle build files
如果没有Generate这个选项，可以尝试升级到高版本的ADT 笔者使用的ADT-23
选中主工程
然后finish即可。完成之后会自动在工程目录中生成一些build文件
说明：在目录下添加local.properties文件，内容如：
sdk.dir=D:\\dev\\adt-bundle-windows-x86_64-20140702\\sdk
即指定Android SDK的目录，gradle在编译工程的时候会调用该目录下的打包工具，由于我已经把SDK目录配置在了环境变量中，这里可以不需要local.properties文件了。
打开build.gradle我们可以看到：
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.+'
}
}
修改这个文件：
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories{
mavenCentral()
}
dependencies{
//笔者使用的gradle版本为2.4
classpath 'com.android.tools.build:gradle:1.1.3'
}
/***
tasks.withType(Compile){
options.encoding = "UTF-8"
}
**/
tasks.withType(JavaCompile) { options.encoding = "UTF-8" }
}
由于使用了ADT自动生成build files的功能，库工程和主工程下都会有build.gradle文件
主工程下build.gradle
apply plugin: 'com.android.application'
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
compile project(':appcompat_v7')
compile project(':AndroidSupportLibrary')
compile project(':AndroidSupportLibrary2')
}
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
aidl.srcDirs = ['src']
renderscript.srcDirs = ['src']
res.srcDirs = ['res']
assets.srcDirs = ['assets']
}
// Move the tests to tests/java, tests/res, etc...
instrumentTest.setRoot('tests')
// Move the build types to build-types/<type>
// For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
// This moves them out of them default location under src/<type>/... which would
// conflict with src/ being used by the main source set.
// Adding new build types or product flavors should be accompanied
// by a similar customization.
debug.setRoot('build-types/debug')
release.setRoot('build-types/release')
}
}
直接命令行切换到主工程目录：执行gradle clean
执行gradle build
至此这个基本流程就算完成了。
3.打多个不同包名，使用不同资源不同渠道定制包。
以umeng多渠道为例，修改android:value
<meta-data
android:name="UMENG_CHANNEL"
android:value="${CHANNEL_NAME}" > </meta-data>
build.gradle中添加
productFlavors {
aa {
applicationId 'com.example.testgradle.aa'
manifestPlaceholders = [ CHANNEL_NAME:"aa"]
}
bb {
applicationId 'com.example.testgradle.bb'
manifestPlaceholders = [ CHANNEL_NAME:"bb"]
}
}
applicationId为包名，manifestPlaceholders会在打包时替换AndroidManifest.xml中<meta-data/>节点下的CHANNEL_NAME，
在src目录下新增目录 src/aa/res src/bb/res
如想重新命名应用名称，只需修改对应路径下的string.xml就行了，换应用的icon或其他资源也同理，保证资源名和主工程下的一致，同时放到对应路径，gradle在打包的时候就会替换为新的资源文件。【这儿有个问题需要注意，就是如果主工程下有自定义的attr，在使用自定义属性的xml中的schemas中使用xmlns:app="http://schemas.android.com/apk/res-auto" 否则在打其他包名的时候提示找不到attribute】
贴上一份还算完整的build.gradle
apply plugin: 'com.android.application'
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
compile project(':appcompat_v7')
compile project(':AndroidSupportLibrary')
compile project(':AndroidSupportLibrary2')
}
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId 'com.example.testgradle'
minSdkVersion 9
targetSdkVersion 20
versionCode 1
versionName '1.0'
}
productFlavors {
aa {
applicationId 'com.example.testgradle.aa'
manifestPlaceholders = [ CHANNEL_NAME:"aa"]
}
bb {
applicationId 'com.example.testgradle.bb'
manifestPlaceholders = [ CHANNEL_NAME:"bb"]
}
signingConfigs{
myConfig{
storeFile file("test.keystore")//指定keystore的路径 这儿为当前工程目录下
storePassword "123321"
keyAlias "alias_name"
keyPassword "123321"
}
}
buildTypes{
release{
//runProguard true //打开混淆开关
//proguardFile 'proguard.txt.txt' //配置单个文件这样
signingConfig signingConfigs.myConfig
}
}
sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
aidl.srcDirs = ['src']
renderscript.srcDirs = ['src']
res.srcDirs = ['res']
assets.srcDirs = ['assets']
}
}
// Move the tests to tests/java, tests/res, etc...
instrumentTest.setRoot('tests')
// Move the build types to build-types/<type>
// For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
// This moves them out of them default location under src/<type>/... which would
// conflict with src/ being used by the main source set.
// Adding new build types or product flavors should be accompanied
// by a similar customization.
debug.setRoot('build-types/debug')
release.setRoot('build-types/release')
}
}
相关技术文章
http://tech.meituan.com/mt-apk-adaptation.html
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