Activity class {com.myapp/com.myapp.MainActivity} does not exist.

[xuho]

I have created react native app with command: "react-native init myapp --version [email protected]", then I run command "cd myapp && react-native run-android", app was BUILD SUCCESSFUL, but cannot start:
Starting: Intent { cmp=com.myapp/.MainActivity }
Error type 3
Error: Activity class {com.myapp/com.myapp.MainActivity} does not exist.

[hramos]

Hey, thanks for reporting this issue!

It looks like your description is missing some necessary information. Can you please add all the details specified in the template? This is necessary for people to be able to understand and reproduce the issue being reported.

I am going to close this, but feel free to open a new issue with the additional information provided. Thanks!

[hengsoheak]

I got the same problem when I try to run my projects again.
But with previous days it works fine just today, I can not run don't know how.

Environment:
OS: macOS Sierra 10.12.6
Node: 6.11.0
Yarn: Not Found
npm: 5.5.1
Watchman: 4.9.0
Xcode: Xcode 9.0.1 Build version 9A1004
Android Studio: 2.1 AI-143.2915827

Packages: (wanted => installed)
react: 16.0.0-beta.5 => 16.0.0-beta.5
react-native: 0.49.5 => 0.49.5

BUILD SUCCESSFUL

Total time: 12.443 secs

This build could be faster, please consider using the Gradle Daemon: https://docs.gradle.org/2.14.1/userguide/gradle_daemon.html
/bin/sh: adb: command not found
Starting the app (/Users/sopheak/Library/Android/sdk/platform-tools/adb shell am start -n com.agriculture/com.agriculture.MainActivity...
Starting: Intent { cmp=com.agriculture/.MainActivity }
Error type 3
Error: Activity class {com.agriculture/com.agriculture.MainActivity} does not exist.

[AdamRobertHall]

I got the same error

Error type 3
Error: Activity class {com.datetimefuture/com.datetimefuture.MainActivity} does not exist.

"react-native": "^0.48.4",
///////////////
react-native init DateFutrueTime
react-native run-android
/////////////// run this shell can see the bug

[romreed]

@AdamRobertHall
Check whether the following values are same,

package (usually line 2) in /android/app/src/main/AndroidManifest.xml

applicationId (usually line 90) in defaultConfig section of /android/app/build.gradle

Line 1 of /android/app/src/main/java/com/paysack/MainApplication.java

Line 1 of /android/app/src/main/java/com/paysack/MainActivity.java