Ionic 3(Cordova) cordova-plugin-googleplus Play商店安装后Error 10求助

Let's break down what's likely causing this Error 10 issue and how to fix it—this is almost always related to Google Sign-In SHA-1 certificate mismatches, especially with Google Play's app signing system.

1. Google Play's App Signing Service Is Overriding Your APK Signature #

When you upload your APK to Google Play, if you're using App Signing by Google Play (enabled by default for most new apps), Google re-signs your APK with its own dedicated release key. This means the SHA-1 certificate your app uses when downloaded from the Play Store is not the same as the one from your local keystore.

You configured Google Sign-In with your local keystore's SHA-1, but the Play Store version relies on Google's release key SHA-1—this mismatch triggers Error 10 during Google Sign-In validation.

2. Fix Step 1: Get Google Play's Release Key SHA-1 #

• Log into your Google Play Console and navigate to your app
• Go to Release > Setup > App Signing (in the left sidebar)
• Copy the SHA-1 certificate fingerprint listed under "App signing certificate"

3. Fix Step 2: Update Google Cloud Console Credentials #

• Open your Google Cloud Console project linked to the app
• Go to APIs & Services > Credentials
• Find the Android client ID you created for Google Sign-In, then edit it
• Add the Google Play app signing SHA-1 you just copied (you can keep your local SHA-1 too, to support sideloaded testing)

4. Double-Check Your Local Signing Workflow #

Wait a second—looking at your steps, you generated a keystore named release-HMC.keystore but signed your APK with release-key.keystore. Are these the same file? If not, that's another critical mismatch:

• You fetched the SHA-1 from release-HMC.keystore, but signed your upload APK with release-key.keystore—so even before Google Play re-signs it, your upload APK's SHA-1 doesn't match what you configured.
• Make sure you're using the same keystore for both signing the APK and generating the SHA-1 you added to Google Cloud.

5. Quick Additional Checks #

• Confirm the Google+ API is enabled in the correct Google Cloud project (it's easy to mix up projects!)
• Verify your app's package name in config.xml exactly matches the package name linked to your Google Sign-In client ID.

Once you update the SHA-1 in Google Cloud with the Play Store's app signing certificate, the Error 10 should disappear for users downloading from the Play Store.

内容的提问来源于stack exchange，提问作者Ravindra Vairagi