How to Fix Manifest Merger Failed with Multiple Errors Error: Quick Solutions and Log Analysis

If you're an Android developer, you may have encountered the "Manifest merger failed with multiple errors" error while building your app. This error occurs when the Android build system fails to merge the manifest files of your app and its dependencies. In this guide, we'll show you quick solutions to fix this error and how to analyze the logs to identify the root cause.

Quick Solutions

Solution 1: Update Your Dependencies

One common cause of the "Manifest merger failed with multiple errors" error is outdated dependencies. To fix this, update your dependencies to the latest versions.

To update your dependencies in Android Studio, do the following:

1. Open your project in Android Studio.
2. Click on the "Project" tab on the left side of the screen.
3. Navigate to the "Gradle Scripts" section and open the "build.gradle (Module: app)" file.
4. Scroll down to the "dependencies" section and update the version numbers of your dependencies.
5. Click on the "Sync Now" button to sync your project with the updated dependencies.

Solution 2: Remove Conflicting Libraries

Sometimes, two or more libraries may have conflicting dependencies, causing the "Manifest merger failed with multiple errors" error. To fix this, remove the conflicting libraries from your project.

To remove a library from your Android project, do the following:

1. Open your project in Android Studio.
2. Click on the "Project" tab on the left side of the screen.
3. Navigate to the "External Libraries" section and expand it.
4. Right-click on the library you want to remove and select "Exclude From Project".
5. Click on the "Sync Now" button to sync your project with the updated dependencies.

Solution 3: Check for Duplicate Declarations

The "Manifest merger failed with multiple errors" error can also occur if there are duplicate declarations in your manifest file. To fix this, remove the duplicate declarations from your manifest file.

To check for duplicate declarations in your manifest file, do the following:

1. Open your project in Android Studio.
2. Navigate to the "app" folder and open the "AndroidManifest.xml" file.
3. Look for duplicate declarations of the same activity, service, or receiver.
4. Remove the duplicate declarations and save the file.
5. Click on the "Sync Now" button to sync your project with the updated manifest file.

Log Analysis

If the quick solutions above do not fix the "Manifest merger failed with multiple errors" error, you may need to analyze the logs to identify the root cause. Here's how:

1. Open your project in Android Studio.
2. Click on the "Run" tab on the bottom toolbar.
3. Select "Edit Configurations".
4. In the "Run/Debug Configurations" window, select your app module.
5. In the "General" tab, scroll down to the "Logging" section.
6. Check the "Enable Verbose Logging" option.
7. Click on the "Apply" button to save the configuration.
8. Run your app and reproduce the error.
9. After the error occurs, click on the "Logcat" tab on the bottom toolbar.
10. Look for error messages related to the "Manifest merger failed with multiple errors" error.
11. Analyze the error messages to identify the root cause.
12. Fix the root cause of the error and run your app again.

FAQ

Q1. What is the "Manifest merger failed with multiple errors" error?

A1. The "Manifest merger failed with multiple errors" error occurs when the Android build system fails to merge the manifest files of your app and its dependencies.

Q2. How do I update my dependencies in Android Studio?

A2. To update your dependencies in Android Studio, open the "build.gradle (Module: app)" file and update the version numbers of your dependencies. Then click on the "Sync Now" button to sync your project with the updated dependencies.

Q3. How do I remove a library from my Android project?

A3. To remove a library from your Android project, right-click on the library in the "External Libraries" section and select "Exclude From Project". Then click on the "Sync Now" button to sync your project with the updated dependencies.

Q4. How do I check for duplicate declarations in my manifest file?

A4. To check for duplicate declarations in your manifest file, open the "AndroidManifest.xml" file and look for duplicate declarations of the same activity, service, or receiver. Then remove the duplicate declarations and save the file.

Q5. How do I enable verbose logging in Android Studio?

A5. To enable verbose logging in Android Studio, go to the "Run/Debug Configurations" window, select your app module, and check the "Enable Verbose Logging" option in the "General" tab. Then click on the "Apply" button to save the configuration.