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An easy to use Automatic OTP reader library for android. This is based on GoogleApiClient and SmsRetriever and doesn't require any permission.
Step 1. Add the JitPack repository to your build file
Add it in your root build.gradle at the end of repositories:
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
Step 2. Add the dependency
dependencies {
...
implementation 'com.github.hassanmhd:AutomaticOTPAndroid:1.0.0'
}
Java
Kotlin
And That's it!
What is the right message format?
By default, Any message format will be received if it has the following:
<#> or [#] in the beginning of the message to let the android system understand that this is an OTP message.[YOUR_APP_SIGNATURE] at the end of the message to make google play services understand that the message received is intented to your application.example
<#> Hello user, Your activation code is: XXXX
[APP_SIGNATURE]
How can I generate my app signature?
For Debuge version:
If you're still developing your app, you can check the demo application and use the class AppSignauterHelper.java used in the demo to generate your app's signature that you'll be using to compose the messages in the backend for your tests. But MAKE SURE THAT YOU DELETED THIS CLASS BEFORE RELEASING YOUR APP
For releasing to Google play:
If you're going to release the application to google play there is some work to be done. Because google play signs the apps you publish, this changes your application's signature after it's uploaded to google play. So you'll need to get the new application signature to be set in your backend.
But don't worry, the process is really easy and all you have to do is:
1.Download the app signing certificate deployment_cert.der file from google play console.
2.Convert the deployment_cert.der file to a .jks file using this command:
keytool -importcert -alias YOUR_ALIAS -file deployment_cert.der -keystore certificate.jks -storepass YOUR_PASSWORD
certificate.jks filekeytool -exportcert -alias YOUR_ALIAS -keystore certificate.jks | xxd -p | tr -d "[:space:]" | echo -n YOUR_PACKAGE `cat` | sha256sum | tr -d "[:space:]-" | xxd -r -p | base64 | cut -c1-11
And Done! now you should see the 11 characters hash code for your google play application!.
For more details on how to generate the app's signature key you can check this answer in stackoverflow
Copyright 2019 Hassan Warrag
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Automatic OTP reader library for android