No resource identifier found for attribute 'roundIcon' in package 'android'

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.

I removed android:roundIcon from my manifest, but when compiling my project with API 24, the android:roundIcon property is still added to the AndroidManifest.xml.

In order to resolve my problem, I had to update my API to version 25 and set comileSdkversion to 25.