如何从android中删除日志行？

Question

我试过

-assumenosideeffects class android.util.Log {
    public static *** d(...);
    public static *** v(...);
    public static *** i(...);
}

以及

-assumenosideeffects class android.util.Log {
    public static boolean isLoggable(java.lang.String, int);
    public static int v(...);
    public static int i(...);
    public static int w(...);
    public static int d(...);
    public static int e(...);
}

我的Build.gradle

apply plugin: 'com.android.application'

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.google.code.gson:gson:2.5'
    compile 'com.android.support:cardview-v7:23.1.1'
    compile project(':aFileChooser')
    compile project(':balysvMaterial')
    compile project(':bottomSheet')
}
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.vicky.test"
        minSdkVersion 14
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

}

但是我仍然在log-cat中获取日志行导出已签名的APK。

显示日志行示例

Log.i(TAG, "name       : " + name);
Log.i(TAG, "gender : " + gender);

我做错了什么...... 请帮帮我。