Android Studio 指定签名证书文件

1.先参照Android
Studio中创建keystore生成指定的证书文件。

2.在app/build.gradle文件中增加 signingConfigs字段：如下所示：

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apply plugin: 'com.android.application' android {    compileSdkVersion 21    buildToolsVersion "21.1.0"    defaultConfig {        applicationId "com.test.example"        minSdkVersion 14        targetSdkVersion 21        versionCode 1        versionName "1.0"    }     signingConfigs {        debug {            File strFile = new File("../../Keystore/Debug/debug.jks")            storeFile file(strFile)            storePassword "storeDebug1234567890"            keyAlias "debugkey"            keyPassword "aliasDebug1234567890"            //println strFile.absolutePath;        }        release {            File strFile = new File("../../Keystore/Release/release.jks")            storeFile file(strFile)            storePassword "storeRelease1234567890"            keyPassword "keyRelease1234567890"            keyAlias "releasekey"            // println strFile.absolutePath;        }    }        buildTypes {        release {            signingConfig  signingConfigs.release            runProguard false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}

注意1. storeFile， storePassword， keyAlias， keyPassword缺一不可，都必须填写，并且填写正确。如果没有填写 keyAlias，则签名时候会报告 Android-APK signing error : Failed toread key from keystore密码不正确的时候，会报告 Java.security.UnrecoverableKeyException: Cannot recoverkeyThis exception may result from the fact that you had provided a key password that wasdifferent from the keystore password2.对于 Release配置，在 buildTypes中必须指定

1	signingConfigsigningConfigs.release

否则，会出现

1	Error:Theapkforyourcurrentlyselectedvariant(app-release-unsigned.apk)isnotsigned.pleasespecifyasigningconfigurationforthisvariant(release)

3. signingConfigs必须在 buildTypes前面声明，否则会出现找不到配置选项的错误。