IONIC Apps upload to google play

cordova plugin rm cordova-plugin-console

cordova build --release android

keytool -genkey -v -keystore Helloworld.keystore -alias Helloworld -keyalg RSA -keysize 2048 -validity 10000

Step 1: set path C:\Program Files (x86)\Java\jdk1.8.0_20\bin in command line

Step 2: jarsigner -verbose -keystore /path_to_keystore/keystoreFileName  /path_to_apk_file/application_name.apk keystoreFileName_alias

For example: 
jarsigner -verbose -keystore C:\Users\admin22\Ionic_project\First\Helloworld.keystore  C:\Users\admin22\Ionic_project\helloWorld\platforms\android\build\outputs\apk\android-release-unsigned.apk Helloworld

-keystoreFileName_alias. You have to provide your alias name of your keystore file name.

Step 3: Enter password of your keystore file

Step 4: Completed. It will displays warning messages like certifaction validity etc..

Step 5: Verify your apk file jarsigner -verify /path_to_apk_file/application_name.apk

For example :
jarsigner -verify C:\Users\admin22\Ionic_project\helloWorld\platforms\android\build\outputs\apk\android-release-unsigned.apk

jarsigner -verify -verbose -certs C:\Users\admin22\Ionic_project\helloWorld\platforms\android\build\outputs\apk\android-release-unsigned.apk

Zip align:

Step 6: set path C:\Program Files (x86)\Android\sdk\build-tools\android-4.4W in command line

Step 7: zipalign -v 4 /path_to_apk_file/application_name.apk /path_to_destination_apk_locaion/zipped_application_name.apk

For example :
zipalign -v 4 C:\Users\admin22\Ionic_project\helloWorld\platforms\android\build\outputs\apk\android-release-unsigned.apk C:\Users\admin22\Ionic_project\helloWorld\platforms\android\build\outputs\apk\final.apk

Secound Method:
create file with name :"release-signing.properties" under android apps folder inside the ionic apps

storeFile=docket.jks storeType=jks keyAlias=docket // if you don't want to enter the password at every build, use this: keyPassword=docket storePassword=docket convert the name of *.keystroke to *.jks