我正在尝试将本机调试添加到作为 Android Studio NDK 项目的项目中。过去我只是使用 gradle 来启动一个构建 NDK 库的 shell 脚本。现在我正在尝试使用 gradle-experimental 插件。
我已经在网上搜索了关于使用 gradle-experimental 和 NDK 的少量信息（主要是在这里，Android 工具站点 - Gradle Experimental），并且我已经整理了这个使用预览版 NDK 的 build.gradle 文件支持将 NDK 构建与 Java 构建内联。
在最终从零碎的信息中收集到这些信息后，我设法构建了 NDK 部分，但现在它无法包含明确包含在依赖项中的 httpmime-4.4-beta1.jar 文件，而且我已经尝试了许多不同的排列方式，例如：
compile files("libs/httpmime-4.4.jar")
但无论如何，Jar 文件中缺少符号的错误仍然出现。
build.gradle 源码
apply plugin: 'com.android.model.application'
String APP_PACKAGE_NAME = 'com.obfuscated.app',
VERSION_NAME = '3.0',
TOOLS_VERSION = '23.0.2'
int VERSION_CODE = 15,
MIN_SDK_VERSION = 13,
TARGET_SDK_VERSION = 19,
COMPILE_SDK_VERSION = 23
model {
repositories {
libs(PrebuiltLibraries) {
// prebuilt binaries mirroring Android.mk
libstuff {
headers.srcDirs.add(file("jni/stuff/include/stuff"))
binaries.withType(SharedLibraryBinary) {
sharedLibraryFile = file("jni/stuff/lib/libstuff.so")
}
}
// ...several more of these actually exist in build.gradle and are working
cares {
headers.srcDirs.add(file("jni/c-ares/include"))
binaries.withType(SharedLibraryBinary) {
// StaticLibraryBinary and staticLibraryFile doesnt work despite sample code, at least not for com.android.tools.build:gradle-experimental:0.6.0-alpha5, this builds even though its a static-lib
sharedLibraryFile = file("jni/c-ares/lib/libcaresARM.a")
}
}
}
}
android {
compileSdkVersion = COMPILE_SDK_VERSION
buildToolsVersion = TOOLS_VERSION
defaultConfig.with {
applicationId = APP_PACKAGE_NAME
minSdkVersion.apiLevel = MIN_SDK_VERSION
targetSdkVersion.apiLevel = TARGET_SDK_VERSION
versionCode = VERSION_CODE
versionName = VERSION_NAME
buildConfigFields {
create() {
type "int"
name "VALUE"
value "1"
}
}
compileOptions.with {
sourceCompatibility = JavaVersion.VERSION_1_7
targetCompatibility = JavaVersion.VERSION_1_7
}
}
signingConfigs {
create("appRelease") {
storeFile file('sign.jks')
storePassword '...'
keyAlias '...'
keyPassword '...'
storeType "jks"
}
}
} // end android
android.lintOptions {
abortOnError = false
}
android.packagingOptions {
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
exclude 'META-INF/services/javax.annotation.processing.Processor'
}
android.ndk {
moduleName = "native"
toolchain "clang"
toolchainVersion "3.5"
platformVersion = MIN_SDK_VERSION
ldLibs.addAll('atomic', 'android', 'log', 'OpenSLES')
abiFilters.addAll(["armeabi", "armeabi-v7a"])
CFlags.addAll(["-mfloat-abi=softfp", "-mfpu=neon", "-O3", "-DCARES_STATICLIB", "-Wno-c++11-long-long"])
cppFlags.addAll(["-I${file("jni")}".toString(),
"-I${file("jni/c-ares/include")}".toString(),
"-I${file("jni/coffeecatch")}".toString()])
stl = "stlport_shared"
}
android.sources {
main {
jniLibs {
dependencies {
}
}
jni {
dependencies {
library "libstuff"
library "cares"
// ...
}
source {
srcDir "jni"
}
}
// java {
// dependencies {
// compile files("libs/httpmime-4.4-beta1.jar")
// compile files("libs/FlurryAnalytics-5.1.0.jar")
// }
// }
}
}
android.buildTypes {
debug {
ndk.with {
debuggable = true
}
}
release {
minifyEnabled = false
ndk.with {
debuggable = true
}
}
}
android.productFlavors {
create("arm") {
ndk.with {
abiFilters.add("armeabi-v7a")
ldLibs.addAll([file("jni/stuff/lib/libstuff.so").toString(),
file("jni/c-ares/lib/libcaresARM.a").toString()])
}
}
create("fat") {
// compile and package all supported ABI
}
}
} // end model
repositories {
mavenCentral()
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:support-v4:23.+'
compile 'com.android.support:appcompat-v7:23.+'
compile 'com.android.support:support-v13:23.+'
compile 'com.android.support:support-annotations:23.+'
compile 'com.squareup:otto:1.3.8'
compile 'com.github.machinarius:preferencefragment:0.1.1'
compile 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
compile 'com.fasterxml.jackson.core:jackson-core:2.5.+'
compile 'com.fasterxml.jackson.core:jackson-annotations:2.5.+'
compile 'com.fasterxml.jackson.core:jackson-databind:2.5.+'
compile 'com.jakewharton:butterknife:7.0.1'
compile 'com.google.guava:guava:19.0'
}
allprojects {
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xlint:deprecation" << "-Xlint:unchecked"
}
}
出于沮丧，我切换回非实验分支，即使使用旧的 build.gradle 文件，它现在也无法找到相同的 jar 文件。那么 Android Studio 2.0 Preview 6 有问题吗？
有没有其他人经历过这个，或者有解决方案？最终在 Android Studio 中进行 NDK 调试工作会非常方便，如果不是因为这最后一个障碍，我想我会在那里。
由于没有重写依赖于该 jar 文件的代码，我不知道还能尝试什么。我也愿意接受有关上述 build.gradle 文件格式的建议，因为这些新功能的文档仍然非常稀少，而且一些示例在正确的语法方面似乎已经过时了。
我错过了什么？
您可以看到 C 和 Cpp (mobile:compileNativeArmeabiDebugArmSharedLibraryNativeMainCpp) 步骤进行得很好，但是 Javac 失败了。在过去 2 年左右的时间里，这种 jar 文件方法对于来自 apache 的 http-mime 库一直运行良好，所以我不明白为什么突然会出现问题。
:mobile:mergeArmDebugAndroidTestAssets
:mobile:generateArmDebugAndroidTestResValues UP-TO-DATE
:mobile:generateArmDebugAndroidTestResources
:mobile:mergeArmDebugAndroidTestResources
:mobile:processArmDebugAndroidTestResources
:mobile:generateArmDebugAndroidTestSources
:mobile:copyArmeabi-v7aDebugArmSharedLibraryStlSo
:mobile:compileNativeArmeabi-v7aDebugArmSharedLibraryNativeMainC
:mobile:compileNativeArmeabi-v7aDebugArmSharedLibraryNativeMainCpp
:mobile:linkNativeArmeabi-v7aDebugArmSharedLibrary
:mobile:nativeArmeabi-v7aDebugArmSharedLibrary
:mobile:stripSymbolsArmeabi-v7aDebugArmSharedLibrary
:mobile:ndkBuildArmeabi-v7aDebugArmSharedLibrary
:mobile:ndkBuildArmeabi-v7aDebugArmStaticLibrary UP-TO-DATE
:mobile:copyArmeabiDebugArmSharedLibraryStlSo
:mobile:compileNativeArmeabiDebugArmSharedLibraryNativeMainC
:mobile:compileNativeArmeabiDebugArmSharedLibraryNativeMainCpp
:mobile:linkNativeArmeabiDebugArmSharedLibrary
:mobile:nativeArmeabiDebugArmSharedLibrary
:mobile:stripSymbolsArmeabiDebugArmSharedLibrary
:mobile:ndkBuildArmeabiDebugArmSharedLibrary
:mobile:ndkBuildArmeabiDebugArmStaticLibrary UP-TO-DATE
:mobile:processAndroidArmDebugMainJniLibs UP-TO-DATE
:mobile:androidArmDebug
:mobile:compileArmDebugJavaWithJavac
:mobile:compileArmDebugJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
是的，我知道 apache 库已被弃用，但这是遗留代码，尽管如此，它应该可以工作，并且将来会更新。