What does 'not found in maxSupportVersion' warning mean?

[jahirfiquitiva]

Project Setup

app/build.gradle

buildscript {
    repositories {
        maven { url 'https://plugins.gradle.org/m2/' }
    }
    dependencies {
        classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:0.11.0'
    }
}
apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'

dependencies {
    implementation 'com.onesignal:OneSignal:3.9.3'
}

Logs

OneSignalPlugin: 28 not found in maxSupportVersion rules list.
Assuming max safe default of '28.+' for 'com.android.support'

[jkasten2]

@jahirfiquitiva This warning means that we haven't defined a maximum Android Support Library for compileSDKVersion 28 yet. It falling back to '28.+' as a safe default which is correct in this case.

We will add this to the version list in the next version so this warning will not show in the future.

[jahirfiquitiva]

Is it safe or ok to keep using this version in the meantime? Or I must downgrade the compileSDKVersion?

[jkasten2]

@jahirfiquitiva Yes, it is safe to ignore this warning. The correct version of the Android Support Library is being used in this case