title: How to sign Android APK using v2 signature in Ionic 3 CLI?
body: <p>I am trying to upload a new build for Ionic 3 app. Now the Google Play Store is asking me to target minSDK 30 which is have done. But now the Google Play Store is returning message:</p>
  <pre><code>ERROR: MIN_SIG_SCHEME_FOR_TARGET_SDK_NOT_MET: Target SDK version 30 requires a minimum of signature scheme v2; the APK is not signed with this or a later signature scheme.
  </code></pre>
  <p>I tried to sign using apksigner but whenever I run the command I get error as Atleast one signer must be specified.</p>
  <p>I did the following steps;</p>
  <pre><code>ionic cordova build android --prod --release
  keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000
  jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my-release-key.keystore HelloWorld-release-unsigned.apk alias_name
  zipalign -v -p 4 HelloWorld-release-unsigned.apk HelloWorld.apk
  apksigner sign --ks my-release-key.keystore HelloWorld.apk
  </code></pre>
  <p>I can use the zip align but cannot sign using apksigner. Please help</p>