MapView not rendered in Android emulator. "Unfortunately, Expo has stopped." error occured

Issue

Im trying to run the example listed in https://docs.expo.io/versions/latest/sdk/map-view in an android emulator inside expo. But it doesn't work, and crashed every time with the message "Unfortunately, Expo has stopped." I would very much appreciate your help on getting MapView to display properly on the Android emulator.

Solution

Now it works well. It was just because of incorrect google API key.

But there's no displayed detail error info, and just crashed, so I was not sure and very confused about what the problem is.

At the last, I switched my project into a Flutter, and doing the same functions, I found that my API key was wrong. So I returned to React Native Expo again and typed the correct API key and made the project work well.

What I did are the following 2 things.
1. Generated a google API key for map SDK for android according to the following link. https://developers.google.com/maps/documentation/android-sdk/get-api-key
2. Typed the API key to the app.json file.

Any doubts, let me know, please. Thanks.

Answered By - Yuji