升级Android Studio 3.1后编译及签名发布APK报错求助

Hey there, let's work through this mergeReleaseResources issue you're hitting after migrating to Android Studio 3.1. I’ve dealt with similar headaches with this AS version, so here are some practical fixes to try out:

1. Audit Your Resource Files #

• Double-check all resource file names (drawables, layouts, values files, etc.) follow Android's naming rules: only lowercase letters, numbers, and underscores are allowed—no spaces, special characters, or Chinese characters.
• Validate XML resources for syntax errors (unclosed tags, misspelled attributes). Right-click the problematic XML file and select Validate to run a quick check.

2. Clean & Rebuild Your Project #

This basic step often resolves cached build issues:

• Click Build → Clean Project in the Android Studio toolbar
• Then click Build → Rebuild Project
• If that doesn’t work, delete the .gradle folder (project root) and app/build folder, restart Android Studio, and rebuild from scratch.

3. Align Gradle Plugin & Gradle Versions #

Android Studio 3.1 requires specific Gradle versions to work properly:

• Open your project-level build.gradle and make sure the Android Gradle Plugin is set to a 3.1.x stable version (like 3.1.4):

  dependencies {
      classpath 'com.android.tools.build:gradle:3.1.4'
  }
  

• Check gradle-wrapper.properties to ensure you’re using Gradle 4.4 or higher (compatible with AS 3.1):

  distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
  

4. Fix Resource Duplication Conflicts #

A common cause of merge failures is duplicate resource names between your app module and dependent libraries:

• Expand your full error log to find the exact conflicting resource (the snippet you shared cuts off the critical details).
• Add a resource prefix to your app module to avoid clashes. In your app-level build.gradle:

  android {
      resourcePrefix "app_"
  }
  

  This will automatically prepend app_ to all your app’s resources, separating them from library resources.

5. Verify Signing Configuration #

Since you also hit issues when generating a signed APK, confirm your signing setup is correct:

• Check the signingConfigs block in your app-level build.gradle to ensure the keystore path, passwords, and alias are accurate (and the keystore file exists):

  signingConfigs {
      release {
          storeFile file("your_keystore.jks")
          storePassword "your_store_password"
          keyAlias "your_key_alias"
          keyPassword "your_key_password"
      }
  }
  

• Make sure your release build type references this signing config:

  buildTypes {
      release {
          signingConfig signingConfigs.release
          // Other release configs...
      }
  }
  

6. Disable PNG Crunching (Temporary Workaround) #

Sometimes PNG compression causes this failure. Try disabling it in your app-level build.gradle:

android {
    aaptOptions {
        cruncherEnabled = false
    }
}

If none of these fixes work, share the full error log—especially the Caused by section—it’ll pinpoint the exact resource or configuration causing the problem.

内容的提问来源于stack exchange，提问作者user3555472