android - 我无法生成签名的 APK

Question

当我尝试生成签名的 APK 时出现错误。

错误日志：

错误：将字节码转换为dex时出错：原因：com.android.dex.DexException：多个dex文件定义Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoVersionImpl;

错误：任务“：HoppingMouse：transformClassesWithDexForRelease”执行失败。com.android.build.api.transform.TransformException：com.android.ide.common.process.ProcessException：java.util.concurrent.ExecutionException：java.lang.UnsupportedOperationException

构建.gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 19
    buildToolsVersion "24.0.2"

    defaultConfig {
        applicationId "bb.HoppingMouse"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

dependencies {

    compile files('libs/android-support-v4.jar')
    compile 'com.google.android.gms:play-services-ads:9.4.0'
}

build.gradle 模块：googleplayservices_lib

apply plugin: 'com.android.library'

android {
    compileSdkVersion 19
    buildToolsVersion "24.0.2"


    defaultConfig {
        minSdkVersion 8
        targetSdkVersion 8
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

dependencies {
    compile files('libs/google-play-services.jar')
}