Android编写摇篮和Proguard的 [英] Android with Gradle and Proguard
问题描述
我刚刚创建使用摇篮一个新的Android库项目，并希望code进行优化，并通过Proguard的混淆使用。
下面是Android部分在 build.gradle 文件：
安卓{
compileSdkVersion 19
buildToolsVersion19.0.1
defaultConfig {
的minSdkVersion 14
targetSdkVersion 19
版本code 1
VERSIONNAME1.0
}
推出 {
runProguard真
proguardFiles getDefaultProguardFile（'ProGuard的-的Android optimize.txt'），'ProGuard的-rules.txt
}
}
当我运行的摇篮打造从终端命令失败在：库：proguardRelease 与消息：
*出了什么问题：
执行失败的任务：图书馆：proguardRelease。
＆GT; java.io.IOException异常：输出罐子是空的。你指定适当的-keep选项？
有谁知道这是为什么？
摇篮1.10 JVM 1.6.0_65 Progruard 4.10
下面的 build.gradle 在执行时，文件对我的作品使用ProGuard gradlew assembleRelease 。
请注意它被设置读取配置文件释放密钥存储的信息（我已经包含在项目的调试关键证书，因为它需要的地图在调试模式下API第2版），以及密码的命令行
应用插件：'机器人'
安卓{
compileSdkVersion 19
buildToolsVersion19.0.0
defaultConfig {
的minSdkVersion 8
targetSdkVersion 19
}
如果（project.hasProperty（secure.properties）
＆功放;＆安培;新的文件（project.property（secure.properties））。存在（））{
属性道具=新特性（）
props.load（新的FileInputStream（文件（project.property（secure.properties））））
signingConfigs {
调试{
storeFile文件（gpstest.debug.keystore）
}
推出 {
storeFile文件（道具['key.store']）
keyAlias道具['key.alias']
storePasswordaskmelater
keyPasswordaskmelater
}
}
} 其他 {
signingConfigs {
调试{
storeFile文件（gpstest.debug.keystore）
}
推出 {
// 这里没有什么
}
}
}
buildTypes {
推出 {
runProguard真
proguardFileproguard.cfg
signingConfig signingConfigs.release
}
}
}
任务askForPasswords＆LT;＆LT; {
//必须创建字符串，因为System.readPassword（）返回的char []
//（和分配，以下无提示失败）
高清storePw =新的String（System.console（）readPassword（\ nKeystore密码。））
高清keyPw =新的String（System.console（）readPassword（密钥密码。））
android.signingConfigs.release.storePassword = storePw
android.signingConfigs.release.keyPassword = keyPw
}
tasks.whenTaskAdded {theTask - ＆GT;
如果（theTask.name.equals（packageRelease））{
theTask.dependsOnaskForPasswords
}
}
依赖{
编制项目（：ShowcaseViewLibrary）
编译com.google.android.gms：播放服务：65年2月3日
编译com.actionbarsherlock：actionbarsherlock：4.4.0@aar
编译org.jraf：Android的开关反向移植：1.2
编译com.google.maps.android:android-maps-utils:0.2.1
}
下面是建立配置文件读取密钥库信息说明：
要建立一个发布版本，你需要创建一个gradle.properties文件指向一个secure.properties文件和secure.properties文件指向您的密钥库和别名。该
gradlew assembleRelease命令会提示输入密钥存储密码。在gradle.properties文件位于GPSTest目录和具有内容：
secure.properties =＆LT; full_path_to_secure_properties_file＆GT;
在secure.properties文件（在gradle.properties指定的位置）的内容：
key.store =＆LT; full_path_to_keystore_file＆GT;
key.alias =＆LT; key_alias_name＆GT;
请注意，在这些文件的路径总是使用UNIX路径分隔符
/，即使是在Windows上。如果你使用Windows路径分隔符\，你会得到错误无值已被指定为财产signingConfig.keyAlias。
这里的路径，如果你想克隆并测试它自己Github上的文件/项目： https://github.com/barbeau/gpstest/blob/master/GPSTest /build.gradle
proguard.cfg 也是在GPSTest子目录（同一目录 build.gradle ）：
https://github.com/barbeau/gpstest/blob/master/GPSTest /proguard.cfg
I'm just created a new Android Library project using Gradle and would like the code to be optimized and obfuscated with via Proguard.
Here is the android portion the build.gradle file:
android {
compileSdkVersion 19
buildToolsVersion "19.0.1"
defaultConfig {
minSdkVersion 14
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
release {
runProguard true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.txt'
}
}
When I run the gradle build command from terminal it fails at :library:proguardRelease with the message:
* What went wrong:
Execution failed for task ':library:proguardRelease'.
> java.io.IOException: The output jar is empty. Did you specify the proper '-keep' options?
Does anybody know why this is?
Gradle 1.10 JVM 1.6.0_65 Progruard 4.10
The following build.gradle file works for me with Proguard when executing gradlew assembleRelease.
Note it is set up to read the release keystore info from a config file (and I've included the debug key cert in the project, since its needed for Maps API v2 in debug mode), and passwords from the command line:
apply plugin: 'android'
android {
compileSdkVersion 19
buildToolsVersion "19.0.0"
defaultConfig {
minSdkVersion 8
targetSdkVersion 19
}
if (project.hasProperty("secure.properties")
&& new File(project.property("secure.properties")).exists()) {
Properties props = new Properties()
props.load(new FileInputStream(file(project.property("secure.properties"))))
signingConfigs {
debug {
storeFile file("gpstest.debug.keystore")
}
release {
storeFile file(props['key.store'])
keyAlias props['key.alias']
storePassword "askmelater"
keyPassword "askmelater"
}
}
} else {
signingConfigs {
debug {
storeFile file("gpstest.debug.keystore")
}
release {
// Nothing here
}
}
}
buildTypes {
release {
runProguard true
proguardFile 'proguard.cfg'
signingConfig signingConfigs.release
}
}
}
task askForPasswords << {
// Must create String because System.readPassword() returns char[]
// (and assigning that below fails silently)
def storePw = new String(System.console().readPassword("\nKeystore password: "))
def keyPw = new String(System.console().readPassword("Key password: "))
android.signingConfigs.release.storePassword = storePw
android.signingConfigs.release.keyPassword = keyPw
}
tasks.whenTaskAdded { theTask ->
if (theTask.name.equals("packageRelease")) {
theTask.dependsOn "askForPasswords"
}
}
dependencies {
compile project(':ShowcaseViewLibrary')
compile 'com.google.android.gms:play-services:3.2.65'
compile 'com.actionbarsherlock:actionbarsherlock:4.4.0@aar'
compile 'org.jraf:android-switch-backport:1.2'
compile 'com.google.maps.android:android-maps-utils:0.2.1'
}
Here are the instructions to set up the config files to read keystore info:
To build a release build, you need to create a "gradle.properties" file that points to a "secure.properties" file, and a "secure.properties" file that points to your keystore and alias. The
gradlew assembleReleasecommand will prompt for your keystore passphrase.The "gradle.properties" file is located in the GPSTest directory and has the contents:
secure.properties=<full_path_to_secure_properties_file>
The "secure.properties" file (in the location specified in gradle.properties) has the contents:
key.store=<full_path_to_keystore_file>
key.alias=<key_alias_name>
Note that the paths in these files always use the Unix path separator
/, even on Windows. If you use the Windows path separator\you will get the errorNo value has been specified for property 'signingConfig.keyAlias'.
Here's the path to the file/project on Github if you want to clone and test it yourself: https://github.com/barbeau/gpstest/blob/master/GPSTest/build.gradle
proguard.cfg is also in the GPSTest subdirectory (same directory as build.gradle):
https://github.com/barbeau/gpstest/blob/master/GPSTest/proguard.cfg
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