如何解决APK打包时的Execution failed for task ':app:mergeReleaseResources'错误？

Hey there, let's tackle this mergeReleaseResources error you're hitting when building your APK. This is a super common issue with resource merging in Gradle, and here are the most reliable fixes I've seen work for fellow devs:

1. Clean & Rebuild Your Project #

Start with the basics—cached resources are often the culprit.

• In Android Studio: Click Build → Clean Project, then Build → Rebuild Project.
• Or use the command line:

  ./gradlew clean
  ./gradlew assembleRelease
  

2. Hunt for Duplicate/Corrupted Resources #

This error frequently pops up due to conflicting or broken resources:

• Check for duplicate resource names across your res/ directories (e.g., two ic_launcher.png files in different drawable folders, or duplicate string keys in values/strings.xml).
• Verify that all XML resources (layouts, styles, values) have valid syntax—look for unclosed tags or typos (Android Studio will highlight these with red underlines).
• Make sure image files aren't corrupted (try re-exporting them from your design tool if needed).

3. Fix Invalid Resource Filenames #

Gradle is strict about resource file names—no uppercase letters, spaces, or special characters (only _ and - are allowed).

• Rename files like MyIcon.png to my_icon.png, or Banner@2x.png to banner_2x.png.

4. Resolve Dependency Resource Conflicts #

Third-party libraries might have resources that clash with yours (e.g., two libraries defining the same @string/app_name):

• Use ./gradlew app:dependencies to generate a dependency tree and spot conflicting libraries.
• Override conflicting resources with the tools:replace attribute in your AndroidManifest.xml:

  <application
      ...
      tools:replace="android:label">
  

• If needed, exclude specific resources from a dependency in your app-level build.gradle:

  implementation('com.example.library:xyz:1.0.0') {
      exclude group: 'com.example.library', module: 'conflicting-resources'
  }
  

5. Update Gradle & Android Gradle Plugin (AGP) #

Old versions of Gradle/AGP have known resource merging bugs. Upgrade to the latest stable version:

• In your project-level build.gradle:

  dependencies {
      classpath "com.android.tools.build:gradle:7.4.2" // Use latest stable version
  }
  

• In gradle/wrapper/gradle-wrapper.properties:

  distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip // Match AGP compatible version
  

6. Verify Resource Directory Structure #

Ensure all resources are in the correct res/ subdirectories—e.g., layouts in layout/, images in drawable/ or mipmap/, values in values/. Misplacing files (like putting an XML layout in drawable/) will break merging.

If none of these work, sharing the full error stack trace (the rest of the log you started pasting) would help narrow down the exact issue.

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