Facebook Login

keytool -exportcert -alias androiddebugkey -keystore android/app/debug.keystore | openssl sha1 -binary | openssl base64

or
Facebook Key hash

Step 1 - Download openssl from the link given bellow
step 2 - Select file according to your system.
After finished download extract the downloaded file.

step -3 create a folder in C drive named 'openssl'

copy the all file from the extracted folder and past it in
openssl folder you just created.
example C:/openssl

step 4 - Go to system search box and type 'cmd'

Past this code in command prompt windows.

"keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | C:\openssl\bin\openssl.exe sha1 -binary | C:\openssl\bin\openssl.exe base64"

step 5 - hit Enter.

it will asked for password, now type 'android' as password

and hit Enter again.

THis process will generate a 27 digi key hash copy the hash including =sign

note it key -alias ==>androiddebugkey
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Example : #1 [React Native Tutorial: Facebook Login Example]
Step: #1.1

Setup a Facebook App

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Click the Facebook Login Set up button.

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we need to create a Key Hashes. To get the key hashes.

https://code.google.com/archive/p/openssl-for-windows/downloads

- download and Extract it, and also set the path of  bin  looks like [C:\Users\sapan\Downloads\openssl-0.9.8k_X64\bin]
- open a command prompt and copy and paste the below command.

keytool -exportcert -alias androiddebugkey -keystore android/app/debug.keystore | openssl sha1 -binary | openssl base64

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android/app/res/values/strings.xml then add this value.

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Step: #1
 https://console.firebase.google.com/?gclid=Cj0KCQjwz8bsBRC6ARIsAEyNnvqj5Reg9euAdO1kRWEZ3n3h0Kd3upZgIgbeF6aRSOe5noO9-QpMJm4aAo6OEALw_wcB

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Enable Email and password

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Step: #14
. firebase install
    yarn ad firebase






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