proguard android studio 中的错误，无法使用 minifyenabled true 构建我的项目答案

【问题标题】：Error in proguard android studio, cant build my project with minifyenabled trueproguard android studio 中的错误，无法使用 minifyenabled true 构建我的项目
【发布时间】：2019-07-14 01:34:06
【问题描述】：

我正在使用 android studio 3.1.3，在使用 proguard 生成签名 apk 时出现以下错误

Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to realm-android-library-object-server.aar (io.realm:realm-android-library-object-server:5.8.0)  1ms
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to material-ripple.aar (com.balysv:material-ripple:1.0.2)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to dexter.aar (com.karumi:dexter:5.0.0)  
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to carousel.aar (com.azoft.carousellayoutmanager:carousel:1.2.4) 1ms
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to recyclerview-v7.aar (com.android.support:recyclerview-v7:27.1.1)  
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to recyclerview-v7.aar (com.android.support:recyclerview-v7:27.1.1)  
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to RippleEffect.aar (com.github.emanzanoaxa:RippleEffect:52ea2a0ab6) 1ms
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to recyclerview-v7.aar (com.android.support:recyclerview-v7:27.1.1)  1ms
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to recyclerview-v7.aar (com.android.support:recyclerview-v7:27.1.1)  
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to cardview-v7.aar (com.android.support:cardview-v7:27.1.1)  
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to md-toast.aar (com.valdesekamdem.library:md-toast:0.9.0)   
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to number-picker.aar (com.shawnlin:number-picker:2.4.4)  1ms
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to appcompat-v7.aar (com.android.support:appcompat-v7:27.1.1)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to appcompat-v7.aar (com.android.support:appcompat-v7:27.1.1)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to appcompat-v7.aar (com.android.support:appcompat-v7:27.1.1)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to appcompat-v7.aar (com.android.support:appcompat-v7:27.1.1)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to android-pdf-viewer.aar (com.github.barteksc:android-pdf-viewer:3.1.0-beta.1)  
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to pdfium-android.aar (com.github.barteksc:pdfium-android:1.9.0) 
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to support-v4.aar (com.android.support:support-v4:27.1.1)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to support-v4.aar (com.android.support:support-v4:27.1.1)    1ms
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to support-v4.aar (com.android.support:support-v4:27.1.1)    
Apply org.gradle.api.internal.artifacts.transform.VariantAttributeMatchingCache$1@293fc229 to support-v4.aar (com.android.support:support-v4:27.1.1)

我已将我的代码和错误放在以下链接中

https://pastebin.com/JGDaGz5D

还有我的proguard文件

https://pastebin.com/6LgFX14J

【问题讨论】：

发布完整的日志和您的 proguard 文件 - 您在此处发布的内容没有错误。通常你可以安全地忽略 proguard 问题来构建签名的 apk - 但你需要在文件中抑制它们
在您发布您的 proguard 文件后查看我编辑的答案。

标签： android proguard

【解决方案1】：

将此代码放入您的 progard 文件中

 # Proguard Configuration for Realm (http://realm.io)
    # For detailed discussion see: https://groups.google.com/forum/#!topic/realm-java/umqKCc50JGU
    # Additionally you need to keep your Realm Model classes as well
    # For example:
    # -keep class com.yourcompany.realm.** { *; }

-keep class io.realm.annotations.RealmModule
-keep @io.realm.annotations.RealmModule class *
-keep class io.realm.internal.Keep
-keep @io.realm.internal.Keep class *
-dontwarn javax.**
-dontwarn io.realm.*
-keep class cz.msebera.android.httpclient.** { *; }
-keep class com.loopj.android.http.** { *; }

【讨论】：

如果它有帮助，请给予权利，我将获得 15 个学分

【解决方案2】：

如果您在项目中使用领域，请尝试将其添加到 proguard 文件中。

-keep class io.realm.annotations.RealmModule
-keep @io.realm.annotations.RealmModule class *
-keep class io.realm.internal.Keep
-keep @io.realm.internal.Keep class *
-keep class sun.misc.*
-keep public class android.net.http.SslError
-keep public class android.webkit.WebViewClient
-keep class cz.msebera.android.httpclient.** { *; }
-keep class com.loopj.android.http.** { *; }

-dontwarn javax.**
-dontwarn io.realm.**
-dontwarn android.webkit.WebView
-dontwarn android.net.http.SslError
-dontwarn android.webkit.WebViewClient

【讨论】：