Dagger - error: [Dagger/MapKeys] The same map key is bound more than once - Android

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Explanation of the error: [Dagger/MapKeys] The same map key is bound more than once in Kotlin with Dagger in Android.

When using Dagger in Kotlin for Android development, you might encounter the error message: "[Dagger/MapKeys] The same map key is bound more than once." This error occurs when you have multiple bindings with the same map key.

Step 1: Understand Dagger map bindings

In Dagger, map bindings allow you to associate a key with a value. This can be useful when you want to provide different values based on a specific key. For example, you might have a map binding that associates different implementations of an interface with different keys.

Step 2: Identify the cause of the error

The error message indicates that you have multiple map bindings with the same key. To fix the error, you need to identify the specific bindings that are causing the issue.

Step 3: Check your Dagger module

The most common cause of this error is when you accidentally provide the same map binding more than once in your Dagger module. Check your module to see if you have duplicate map bindings with the same key.

Step 4: Resolve the duplicate bindings

To resolve the issue, you need to ensure that each map key is bound only once. Remove any duplicate map bindings from your Dagger module.

Step 5: Use unique keys for map bindings

If you need to provide multiple implementations for the same key, you can use unique keys for each binding. This can be done by using different objects or annotations as keys. By providing unique keys, you avoid the error of having the same map key bound more than once.

Step 6: Rebuild and test your project

After resolving the duplicate bindings, rebuild your project and ensure that the error is no longer present. Test your application to confirm that the desired behavior is achieved with the correct map bindings.

I hope this explanation helps you understand the steps to resolve the error related to Dagger map bindings in Kotlin for Android. Let me know if you have any further questions.