Api level 28 is not updating in ionic 3 project

Ionic Framework ionic-v3
1

I have installed api level 28 in android studio. I have created new project using “ionic start SuperProject blank --type=ionic-angular”. but api level is not updating to 28 from 26. my project ionic info below:

Ionic:

   Ionic CLI          : 5.2.6 (C:\Users\ismail\AppData\Roaming\nvm\v8.9.4\node_modules\ionic)
   Ionic Framework    : ionic-angular 3.9.5
   @ionic/app-scripts : 3.2.2

Cordova:

   Cordova CLI       : 8.1.2 (cordova-lib@8.1.1)
   Cordova Platforms : android 7.1.4
   Cordova Plugins   : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 4.1.1, (and 4 other plugins)

Utility:

   cordova-res : 0.2.0 (update available: 0.6.0)
   native-run  : 0.2.8

System:

   Android SDK Tools : 26.1.1 (C:\Users\ismail\AppData\Local\Android\Sdk)
   NodeJS            : v8.9.4 (C:\Program Files\nodejs\node.exe)
   npm               : 5.6.0
   OS                : Windows 10

I have also tested adding android-targetSdkVersion in config.xml
<preference name="android-targetSdkVersion" value="28"/>. but it is not working.
I have checked in real device “samsung a7”. App is not opening but not shows error.
I can not upload my app in google play store.

2

Hello, App not opening?. Then inspect your device app using chrome inspect, check there is any error?

3

you just need to update your project api level inside platform/app/build.gradle file

4

Try to update cordova-android to latest 8.0.0 using below commands.

ionic cordova platform remove android
ionic cordova platform add android@8.0.0