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A third-party has developed the main structure for my app, including a Google Sign In. When they test it, it works. When I run the APK that they built, it works. When I build using the project files, it fails with a handleSignInResult:false error.

I've reinstalled Android Studio, installed all the possible SDKs, but to no avail. Does anybody have any idea why one project will build successfully on one computer, but not on mine?

Could it be something to do with the SHA-1?

Rob
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4 Answers4

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Yes...You guessed it right.Its about SHA-1 Key.

You need to add you SHA-1 key generated from your PC keystore

How to get SHA-1 from Android Studio ?

Than add that key in your Firebase console or in Google Console

How to add SHA-1 key to console ?

Burhanuddin Rashid
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First thing we need SHA-1 key for integrate google sign in we need to register this key in google developer or google api console, As per my or other experiance SHA-1 key will change when you change your systm so you need to replace your SHA-1 key with latest from your systme.

Dhaval Solanki
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You need to Generate Your SHA-1 Release Key for Gmail Login After Build Apk

Follow step

1.Open CMD terminal

Goto Java folder using 1. cd java 2. cd jdk1.8.0_112 3. cd bin

C:\Program Files\Java\jdk1.8.0_112\bin>

Enter Following Command:

keytool -list -v -keystore "PATH OF .jks Keystore" -alias android

Note: android is my Keystore Alias

then you will get this : Enter keystore password(Enter your keystore password)

Harshal Deshmukh
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Just update your sha-1 to firebase and goo to tools->Firebase->Authentication->click Connect to firebase.It worked for me;)

Get your sha from Gradle->app->task->android->click Signing report copy the sha1 past to firebase project settings bottom.

Maneesh Bhallae
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