Error in demo app.

[innovationsbg]

I get this error after react-native run-android:

required: Activity,boolean found: MainActivity reason: actual and formal argument lists differ in length 1 error :app:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

What went wrong: Execution failed for task ':app:compileDebugJavaWithJavac'. Compilation failed; see the compiler error output for details.

[andyhappy1]

I'm getting same error. Commenting so I'll be updated on fixes.

[Nikaoto]

As an android developer, I get this error sometimes. What this usually means is that my android build tools version or some of my dependencies are outdated. You can update the build tools version by going into the android/app/build.gradle file and changing these two lines of code:

compileSdkVersion 26
buildToolsVerion '26.0.2'

The versions in your app may differ.

As of today, the latest versions are 26 and '27.0.3' respectively, so replace the two lines with:

compileSdkVersion 26
buildToolsVerion '27.0.3'

If this doesn't fix it, try updating your dependencies with npm update or whichever package manager you use.

EDIT: Also, there might also be outdated dependencies inside the build.gradle file. It should look like this:

...
dependencies {
   compile "somedependency:1.2.0"
}

Where somedependency is the name of the dependency and the number following the colon is its version. Try googling those dependencies to find their latest versions and replace the current ones with them. Just back up your build.gradle before this, just in case.