Скачать или смотреть Resolving the No Activity found to handle Intent Error in Android Development

Learn how to fix the `No Activity found to handle Intent` error in your Android application when using `startActivityForResult`. This guide offers a step-by-step resolution for common pitfalls in intent handling.
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This video is based on the question https://stackoverflow.com/q/66517420/ asked by the user 'Mick jAGGER' ( https://stackoverflow.com/u/9418421/ ) and on the answer https://stackoverflow.com/a/66517829/ provided by the user 'Shay Kin' ( https://stackoverflow.com/u/7085389/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the No Activity found to handle Intent Error in Android

If you're developing an Android application and trying to pass data between activities, you may encounter the dreaded No Activity found to handle Intent error. This typically occurs when you try to start an activity for a result and improperly handle the resulting intent. Assuming you're using Kotlin, let’s break down the core problem and how you can resolve it effectively.

The Problem: What Causes This Error?

When you invoke startActivityForResult(), you expect the second activity to return data back once the user completes their interaction. The issue arises when you mistakenly call startActivity() again within the second activity's completion flow. This redundancy leads to the error, causing the app to crash.

Example Scenario

In our case, we have two activities:

Activity A (OrderActivity.kt): This initiates Action B.

Activity B (PizzaActivity.kt): This gathers information (like toppings) from the user and returns results to Activity A.

While processing user inputs in Activity B, if you incorrectly try to start the activity again using startActivity(intent);, you will trigger the No Activity found to handle Intent error.

Solution: Correctly Handling the End of Activity B

To resolve this error, you must ensure that when closing Activity B and sending data back to Activity A, you do not invoke startActivity(intent);. Instead, you should set the result and finish the activity. Here’s how you can do it:

Step 1: Returning Results

In PizzaActivity.kt, once the user has completed their selections, you should handle the closure of the activity like this:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Avoid Redundant StartActivity Calls

Make sure that when you call setResult(), you completely omit any attempts to call startActivity(intent); in your return process. This is crucial to prevent the ActivityNotFoundException that arises from trying to re-invoke activity calls unnecessarily.

Final Thoughts

By following these guidelines and correcting how you handle intents and activity results, you’ll eradicate the No Activity found to handle Intent error from your Android application. Debugging these issues can be tricky, but always remember that when signaling data back to a previous activity, focus on using setResult() followed by finish(). It simplifies the flow and keeps your application's navigation smooth and efficient. Happy coding!