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Android Play Store

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アプリのリリースビルド作成

To generate a release build for Android, run the following cli command:

$ ionic cordova build android --prod --release

This will generate a release build based on the settings in the config.xml in the platforms/android/build/outputs/apk directory of an app. An Ionic app will have preset default values in this file but this can be changed to customize builds.

APKへの署名

First, the unsigned APK must be signed. If a signing key has already been generated, skip these steps and use that one instead. Generate a private key using the keytool command that comes with the Android SDK:

$ keytool -genkey -v -keystore my-release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000

Once that command has been ran and its prompts have been answered a file called my-release-key.keystore will be created in the current directory.

WARNING: Save this file and keep it somewhere safe. If it is lost the Google Play Store will not accept updates for this app!

To sign the unsigned APK, run the jarsigner tool which is also included in the Android SDK:

$ jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my-release-key.keystore HelloWorld-release-unsigned.apk alias_name

Finally, the zip align tool must be ran to optimize the APK. The zipalign tool can be found in /path/to/Android/sdk/build-tools/VERSION/zipalign. For example, on macOS with Android Studio installed, zipalign is in ~/Library/Android/sdk/build-tools/VERSION/zipalign:

$ zipalign -v 4 HelloWorld-release-unsigned.apk HelloWorld.apk

This generates a final release binary called HelloWorld.apk that can be accepted into the Google Play Store.

Google Play Storeにアプリを送信する

Now that a release APK has been generated, a Play Store listing can be written and the APK can be uploaded.

To start, visit the Google Play Store Developer Console and create a new developer account.

Making a developer account with Google Play costs $25 USD.

Once a developer account has been created, go ahead and click the Create an Application

Create an App button

Be sure to fill out the description for the app along with providing screenshots and additional info. When ready, upload the signed release APK that was generated and publish the app.

アプリのアップデート

As an app evolves, it will need to be updated with new features and fixes. An app can be updated by either submitting a new version to the Google Play Store, or by using a live update service like Ionic Deploy. Using Ionic Deploy, changes can be pushed directly to users from the Ionic Pro dashboard, without submitting changes to the Play Store. Learn more about Ionic Deploy here.

In order for the Google Play Store to accept updated APKs, the config.xml file will need to be edited to increment the version value, then rebuild the app for release following the instructions above.

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