create apk build in android studio

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="io.ionic.starter">
+    package="cocktail.shaker.app">
 
     <application
         android:allowBackup="true"
@@ -12,7 +12,7 @@
 
         <activity
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode"
-            android:name="io.ionic.starter.MainActivity"
+            android:name="cocktail.shaker.app.MainActivity"
             android:label="@string/title_activity_main"
             android:theme="@style/AppTheme.NoActionBarLaunch"
             android:launchMode="singleTask">

android/app/src/main/java/cocktail/shaker/app/MainActivity.java

@@ -1,4 +1,4 @@
-package io.ionic.starter;
+package cocktail.shaker.app;
 
 import android.os.Bundle;
 

android/app/src/main/res/values/strings.xml

@@ -2,6 +2,6 @@
 <resources>
     <string name="app_name">cocktailShakerApp</string>
     <string name="title_activity_main">cocktailShakerApp</string>
-    <string name="package_name">io.ionic.starter</string>
-    <string name="custom_url_scheme">io.ionic.starter</string>
+    <string name="package_name">cocktail.shaker.app</string>
+    <string name="custom_url_scheme">cocktail.shaker.app</string>
 </resources>