Why is My React Native Android Build Failing After Updating to 0.71.0-rc.0?

React Native Android Build Failure After Release of Version 0.71.0-rc.0

Since the recent release of React Native version 0.71.0-rc.0, Android build failures have been a common issue for developers, despite no changes in their code.

Potential Failures:

Although the error messages may vary, the underlying cause is typically related to the conflicting versions of the React Native library in the node_modules and the Android build.

Solution:

To resolve this issue, two methods can be implemented:

Method 1:

1. Navigate to the android directory within your project.
2. Open the build.gradle file.
3. Add the following code to the bottom of the file:

buildscript {
    // ...
}

allprojects {
    repositories {
        exclusiveContent {
            filter {
                includeGroup "com.facebook.react"
            }
            forRepository {
                maven {
                    url "$rootDir/../node_modules/react-native/android"
                }
            }
        }
        // ...
    }
}

Method 2:

1. Open the android directory and the build.gradle file.
2. Check if your Gradle supports the exclusiveContent method. If not, add the following code:

def REACT_NATIVE_VERSION = new File(['node', '--print', "JSON.parse(require('fs').readFileSync(require.resolve('react-native/package.json'), 'utf-8')).version"].execute(null, rootDir).text.trim())

buildscript {
    // ...
}

allprojects {
    configurations.all {
        resolutionStrategy {
            force "com.facebook.react:react-native:" + REACT_NATIVE_VERSION
        }
    }
    // ...  
}

These methods will force Gradle to use the React Native library version from your node_modules directory, resolving the conflicts and allowing your Android build to succeed.

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