React native Android Project Not starting in emulator

Question

i just created a react native project on windows, using expo. After Creating the project i ran npm start and then expo start the next logical thing to do is to press the a button which will launch, the project on the android virtual device, but instead it gave me this error Couldn't start project on Android: Error running adb: Error running app. Error: Activity not started, unable to resolve Intent { act=android.intent.action.VIEW dat=exp://192.168.43.148:19000 flg=0x10000000 }

when i tried running it on my android phone with the expo android app it ran smoothly, i don't know what to do please help thanks

Answer 1

I had the same problem and I got it fixed as follows:

• Go to SDK Manager in Android studio > SDK Tools and check whether there is any update for Android SDK Build-Tools. If there is any, please make sure you update it.
• Close any Android virtual device currently running and then go to Android Studio Virtual Device Manager and wipe the data of your Android virtual device.
• Make sure you have enough internal storage allocated for your Android virtual device to install apps.
• Check whether Android Debug Bridge utility is installed in your device. If not please install it. To install in mac, I used the below command (Assuming that you have HomeBrew installed in your mac device):

brew install android-platform-tools

• Start your Android virtual device ( This step should be done before running the expo development server)
• In the Developer options menu of your Android virtual device, make sure USB debugging option is enabled.
• Finally, try running the development server by expo start and press on the button to run on your Android emulator.