Android launcher icon still showing default in Android Oreo

Question

I changed my application launcher icon using Android Studio 3.0.1:

File -> Image Asset

In Android 8.1, the icon looks like below image:

My AndroidManifest details

 <application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:hardwareAccelerated="true"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

I double checked the icons.ic_launcher and ic_launcher_round are my new icons.

Answer 1

I solved my issue by changing

classpath 'com.android.tools.build:gradle:2.3.3'

to

classpath 'com.android.tools.build:gradle:3.0.1'

in project build-gradle

dependencies {
        //classpath 'com.android.tools.build:gradle:2.3.3'
        classpath 'com.android.tools.build:gradle:3.0.1'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }

this will cause a flavoring issue ,that can be solved by adding

flavorDimensions "default"

in application build-gradle

android {

...
flavorDimensions "default"
defaultConfig {
}


}

this may help some one with same problem.