android studio解决warning: Ignoring InnerClasses attribute for an anonymous inner class

在proguard-rules.pro中添加以下代码：

-keepattributes EnclosingMetho

build.gradle的编译配置如下：

apply plugin: ‘com.android.application‘

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "com.app.aib"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile(‘proguard-android.txt‘), ‘proguard-rules.pro‘
        }
    }
}

dependencies {
    compile fileTree(include: [‘*.jar‘], dir: ‘libs‘)
    testCompile ‘junit:junit:4.12‘
    compile ‘com.android.support:appcompat-v7:23.4.0‘
}