Android Studio获取未签名的APK

BuildType针对Release模式，只需要删除signingConfig的引用

例如

buildTypes {
        release {
            debuggable false
            jniDebuggable false
            renderscriptDebuggable false
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            // release模式注释signingConfig, 
            // 编译后在主模块/build/outputs/apk/release/目录下生成xxx-release-unsigned.apk文件
//            if (project.hasProperty("RELEASE_STORE_FILE")) {
//                signingConfig signingConfigs.release
//            }

            externalNativeBuild {
                ndkBuild {
                    arguments 'NDK_DEBUG=0'
                }
            }
        }

        debug {
            // debug模式默认会使用android studio自带的debug签名文件
            debuggable true
            jniDebuggable true
            renderscriptDebuggable true
            externalNativeBuild {
                ndkBuild {
                    arguments 'NDK_DEBUG=1'
                }
            }
        }
    }