Generate SHA1 Fingerprint in Android studio 2.2+

1. Open Android Studio
2. Open Right Side Gradle (From Right Side Panel)
3. Select :app --> TASKS --> android-->signing report
4. Now at the bottom in the run window You have your SHA1, MD5 and SHA-256

Try following this:How to get the SHA-1 fingerprint certificate in Android Studio for debug mode?.

1. Open Android Studio
2. Open your Project
3. Click on Gradle (From Right Side Panel, you will see Gradle Bar)
4. Click on Refresh (Click on Refresh from Gradle Bar, you will see List Gradle scripts of your Project)
5. Click on Your Project (Your Project Name from List (root))
6. Click on Tasks
7. Click on Android
8. Double Click on signingReport (You will get SHA1 and MD5 in Run Bar)
9. Then click this button:

(top left of the error log)

p/s : Step 9 : You can find it in the log of Gradle Console