No resource identifier found for attribute ’roundIcon’ in package ‘android’

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roundIcon is an attribute that was first introduced for Android Nougat 7.1 (API level 25), therefore you have two available options based on the type of device you’re targeting:

  • If you’re building an app specifically for Android 7.1 or above, ensure that minSdkVersion and targetSdkVersion are set to 25 in your app’s build.gradle:
defaultConfig {
    minSdkVersion 25
    targetSdkVersion 25
}
  • Alternatively, if you want to target older API levels, you will need to remove android:roundIcon from your manifest and only use android:icon.

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