Android

​
1. Install the Gradle Plugin
To install the Preventor Android SDK,  add the following to your project’s build.gradle file:
1.Use minSdkVersion 23 in your build.gradle (Module:app)
2.Add implementation 'com.preventor:preventor_sdk:2.0.73-alpha' to your dependencies.
3.Add repository depencencies in your build.gradle (Project Settings)
4.In your build.gradle (Project: app). Make sure you have the same version or higher  "org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.10" plugin. 
5.In your gradle.properties (Project Properties) add this line android.enableJetifier=true
A complete build.gradlefile should look similar to the example below.
android {
    // 1. Ensure you have hat least minSdkVersion 23
    compileSdkVersion 32
    defaultConfig {
        applicationId "com.preventor.example"
        minSdkVersion 23
        targetSdkVersion 32
        versionCode 1
        versionName "1.0.0"
    }
}
​
dependencies {
  ... 
  // 2. Add line here  
  implementation 'com.preventor:preventor_sdk:2.0.10-alpha'
}
// 3.
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
        maven { url 'https://button.preventor.com/__android/v2'}
    }
You have successfully installed the Preventor SDK!
2. Initialize the SDK
Initialize the SDK. See the coding example below:
Kotlin
Java
package com.preventor.example
​
// 1. Add import of Preventor SDK
import com.preventor.pvtidentityverification.PreventorSDK
​
​
class MainActivity : AppCompatActivity() {
​
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        // 2. Set the context to parameters "activity" and "ViewModelStoreOwner"
        val preventorSDK = PreventorSDK(this, this)
    }
}
package com.preventor.example;
​
// 1. Add import of Preventor SDK
import com.preventor.pvtidentityverification.PreventorSDK;
​
​
public class MainActivity extends AppCompatActivity {
​
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        // 2. Set the context to parameters "activity" and "ViewModelStoreOwner"
        PreventorSDK preventorSDK = new PreventorSDK(this,this);
    }
}
You have successfully initialize the Preventor SDK!
3. Prefilling configs
To continue with the integration you need to set the prefill shown below. First you must obtain the config object by calling getConfig() method.
kotlin
Java
package com.preventor.example
​
import com.preventor.pvtidentityverification.PreventorSDK
​
class MainActivity : AppCompatActivity() {
​
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        val preventorSDK = PreventorSDK(this, this)
​
        // 1. GET CONFIG OBJECT 
         val config = preventorSDK.getConfig()
    }
}
package com.preventor.example;
​
import com.preventor.pvtidentityverification.PreventorSDK;
​
public class MainActivity extends AppCompatActivity {
​
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        PreventorSDK preventorSDK = new PreventorSDK(this,this);
        
          // 1. GET CONFIG OBJECT 
          Config config = preventorSDK.getConfig();
    }
}
Prefill Flowtype
The flow type defines the biometric process so you must select a flow type.
Kotlin
Java
package com.preventor.example
​
import com.preventor.pvtidentityverification.PreventorSDK
​
class MainActivity : AppCompatActivity() {
​
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        preventorSDK = PreventorSDK(this, this)
​
                
         val config = preventorSDK.getConfig()
​
        // 1. SET THE FLOW TYPE
        config.flowId = "YOUR_FLOW_ID"
    }
}
package com.preventor.example;
​
import com.preventor.pvtidentityverification.PreventorSDK;
​
public class MainActivity extends AppCompatActivity {
​
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        PreventorSDK preventorSDK = new PreventorSDK(this,this);
         
         
         Config config = preventorSDK.getConfig();
         
          // 1. SET THE FLOW TYPE
        config.setFlowId("YOUR_FLOW_ID");
    }
}
You must assign the flow type code. If it is blank, it will take the flow type by default.
Prefill Credentials
You must set all credentials values ​​to correctly consume our services.
Kotlin
Java
package com.preventor.example
​
import com.preventor.pvtidentityverification.PreventorSDK
​
class MainActivity : AppCompatActivity() {
​
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        preventorSDK = PreventorSDK(this, this)
​
                
         val config = preventorSDK.getConfig()
​
        
         config.flowId= "YOUR_FLOW_ID"
        
        // 2. SET THE CREDENTIALS    
        config.credentials.apiKey = "YOUR_API_KEY"
        config.credentials.clientSecret = "YOUR_CLIENT_SECRET"
        config.credentials.tenant = "YOUR_TENANT"
        config.credentials.banknu = "YOUR_BANKNU"
        config.credentials.env = "YOUR_ENV"
    }
}
package com.preventor.example;
​
import com.preventor.pvtidentityverification.PreventorSDK;
​
public class MainActivity extends AppCompatActivity {
​
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        PreventorSDK preventorSDK = new PreventorSDK(this,this);
         
         
         Config config = preventorSDK.getConfig();
         
          
        config.setFlowId("YOUR_FLOW_ID");
        
        // 2. SET THE CREDENTIALS
        config.getCredentials().setApiKey("YOUR_API_KEY");
        config.getCredentials().setClientSecret("YOUR_CLIENT_SECRET");
        config.getCredentials().setTenant("YOUR_TENANT");
        config.getCredentials().setBanknu("YOUR_BANKNU");
        config.getCredentials().setEnv("YOUR_ENV");
    }
}
Value
Description
YOUR_API_KEY
your provided apikey.
YOUR_CLIENT_SECRET
your provided clientsecret.
YOUR_TENANT
your provided tenant.
YOUR_BANKNU
your provided banknu.
YOUR_ENV
your provided env.
Prefill Cif Code
The Cifcode is the unique customer profile code. 
 
If the Cifcode is empty, a unique code is assigned.
Kotlin
Java
package com.preventor.example
​
import com.preventor.pvtidentityverification.PreventorSDK
​
class MainActivity : AppCompatActivity() {
​
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        preventorSDK = PreventorSDK(this, this)
​
                
         val config = preventorSDK.getConfig()
​
        
        config.flowId= "YOUR_FLOW_ID"
           
        config.credentials.apiKey = "YOUR_API_KEY"
        config.credentials.clientSecret = "YOUR_CLIENT_SECRET"
        config.credentials.tenant = "YOUR_TENANT"
        config.credentials.banknu = "YOUR_BANKNU"
        config.credentials.env = "YOUR_ENV"
        
        // 3. SET THE CIF CODE
        config.currentUserInfo.cifCode = "YOUR_CIFCODE"
    }
}
package com.preventor.example;
​
import com.preventor.pvtidentityverification.PreventorSDK;
​
public class MainActivity extends AppCompatActivity {
​
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        PreventorSDK preventorSDK = new PreventorSDK(this,this);
         
         
         Config config = preventorSDK.getConfig();
         
          
        config.setFlowId("YOUR_FLOW_ID");
​
        config.getCredentials().setApiKey("YOUR_API_KEY");
        config.getCredentials().setClientSecret("YOUR_CLIENT_SECRET");
        config.getCredentials().setTenant("YOUR_TENANT");
        config.getCredentials().setBanknu("YOUR_BANKNU");
        config.getCredentials().setEnv("YOUR_ENV");
        
        // 3. SET THE CIF CODE
        config.getCurrentUserInfo().setCifCode("YOUR_CIFCODE");
    }
}
​
Prefill Title App Bar
Define an app title that indicates the process to be performed.
Kotlin
Java
preventorSDK.setTitleAppBar("YOUR_TITLE_APP_BAR")
preventorSDK.setTitleAppBar("YOUR_TITLE_APP_BAR")
4. Start the Verification
To start a new verification, you first need to create the preventor verification button.
Add Button in your XML
 <com.preventor.pvtidentityverification.widgets.PreventorButton
        android:id="@+id/identityVerificationButton"
        android:layout_width="161dp"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true" />
Start Verification
To start a verification, prepare the following:
1.Add the reference to verification button.
2.Call initialize() method to start the preventorSDK.
3.Call validateApiKey() method to start the verification.
​
Kotlin
Java
// 1. Add verification button reference.
​
val identityVerificationButton = findViewById<PreventorButton>(R.id.identityVerificationButton)
​
// 2. Call initialize() method.
preventorSDK.initialize()
​
// 3. Call validateApiKey() method.
identityVerificationButton.setOnClickListener {
    preventorSDK.validateApiKey()
}
// 1. Add verification button reference.
PreventorButton identityVerificationButton = findViewById(R.id.identityVerificationButton);
​
// 2. Call initialize() method.
preventorSDK.initialize();
​
// 3. Call validateApiKey() method.
identityVerificationButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        preventorSDK.validateApiKey();
    }
});
To start verification you can also use this call validateApiKey() anywhere in your code when all necessary resources have already been completed.
5. Handling Verifications
To find out if a user has completed the verification process, canceled it or there was an error. To do this, you can implement the following delegate / callback methods:
Method
Description
onStart
This callback method is triggered once a user starts the verification flow. 
onSubmitted
Method that is being called once verification data is submitted to Preventor.
onFinish
Method that is being called once a user clicks the "Finish" button.
onError
This callback method fires when a user canceled the verification flow, the verification ended with an error, or the user performed an incorrect process. You can use this to find out the reason for the error.
Error codes: 
CANCELLED_BY_USER
BIOMETRIC_AUTHENTICATION_FAILED
BAD_STEP_BY_USER 
MISSING_PARAMETERS
TIME_OUT
onNextStep
This callback indicates that it is possible to proceed to the next verification
onComplete
This callback indicates that all necessary resources have already been completed
Should look similar to the example below.
Kotlin
Java
preventorSDK.callback(object : PreventorSDKListener {
            override fun onStart() {
                println("MainActivity onStart");
            }
​
            override fun onFinish(ticked: Ticked) {
                println("MainActivity onFinish");
            }
​
            override fun onError(error: String) {
                println("MainActivity onError: $error");
            }
​
            override fun onSubmitted(ticked: Ticked) {
                println("MainActivity onSubmitted");
            }
            override fun onNextStep() {
            println("MainActivity onNextStep");
            }
            
            override fun onComplete() {
            println("MainActivity onComplete");
            }
​
        })
preventorSDK.callback(new PreventorSDKListener() {
            @Override
            public void onStart() {
                System.out.println("MainActivity onStart");
            }
​
            @Override
            public void onFinish(Ticked ticked) {
                System.out.println("MainActivity onFinish");
            }
​
            @Override
            public void onError(@NonNull String error) {
                System.out.println("MainActivity onError: " + error);
            }
​
            @Override
            public void onSubmitted(Ticked ticked) {
                System.out.println("MainActivity onSubmitted");
            }
            
            @Override
            public void onNextStep(Ticked ticked) {
                System.out.println("MainActivity onNextStep");
            }
            
            @Override
            public void onComplete(Ticked ticked) {
                System.out.println("MainActivity onComplete");
            }
        });
When the verification is finished it will return a ticked object in which you can see the results of the verification. Within them take as reference cifcode, ticketId, flowStatus, dispositionStatus.
Result
Value
cifcode
The cifcode is the unique customer profile code. 
ticketId
The ticketId is the unique code of the verification.
flowStatus
Indicates the general status of the ticket.
See the following codes:
ACCEPTED, IN_PROGRESS, REJECTED, ABANDONED.
dispositionStatus
Indicates the current disposition of the ticket.
See the following codes:
PASSED, NEED_REVIEW, RETRY, FAILED, PROCESSING, LOST_CONECCTION
When the ticket ends in the following combinations, flowStatus and dispositionStatus respectively:
Status
Description
ACCEPTED - PASSED
Verification completed successfully.
IN_PROGRESS - NEED_REVIEW
Verification is complete but there is information to review.
IN_PROGRESS - RETRY
Verification did not complete and requires retry.
IN_PROGRESS -  PASSED
One step of verification has been completed and you can move on to the next.
REJECTED - FAILED
Verification has been refused due to negative results.
ABANDONED - LOST_CONECCTION
The verification has failed due to some unhandled error and the connection has been lost.
ABANDONED - TIME_OUT
Verification failed due to user inactivity.
6. Example project
See the example project below: 
​https://github.com/preventorid/button-android-sdk-app/tree/main​

Value	Description
YOUR_API_KEY	your provided apikey.
YOUR_CLIENT_SECRET	your provided clientsecret.
YOUR_TENANT	your provided tenant.
YOUR_BANKNU	your provided banknu.
YOUR_ENV	your provided env.

Method	Description
`onStart`	This callback method is triggered once a user starts the verification flow.
`onSubmitted`	Method that is being called once verification data is submitted to Preventor.
`onFinish`	Method that is being called once a user clicks the "Finish" button.
`onError`	This callback method fires when a user canceled the verification flow, the verification ended with an error, or the user performed an incorrect process. You can use this to find out the reason for the error. Error codes: `CANCELLED_BY_USER` `BIOMETRIC_AUTHENTICATION_FAILED` `BAD_STEP_BY_USER` `MISSING_PARAMETERS` `TIME_OUT`
`onNextStep`	This callback indicates that it is possible to proceed to the next verification
`onComplete`	This callback indicates that all necessary resources have already been completed

Result	Value
cifcode	The cifcode is the unique customer profile code.
ticketId	The ticketId is the unique code of the verification.
flowStatus	Indicates the general status of the ticket. See the following codes: ACCEPTED, IN_PROGRESS, REJECTED, ABANDONED.
dispositionStatus	Indicates the current disposition of the ticket. See the following codes: PASSED, NEED_REVIEW, RETRY, FAILED, PROCESSING, LOST_CONECCTION

Status	Description
ACCEPTED - PASSED	Verification completed successfully.
IN_PROGRESS - NEED_REVIEW	Verification is complete but there is information to review.
IN_PROGRESS - RETRY	Verification did not complete and requires retry.
IN_PROGRESS - PASSED	One step of verification has been completed and you can move on to the next.
REJECTED - FAILED	Verification has been refused due to negative results.
ABANDONED - LOST_CONECCTION	The verification has failed due to some unhandled error and the connection has been lost.
ABANDONED - TIME_OUT	Verification failed due to user inactivity.

Last modified 1mo ago