Fingeprint authentication added wrt issue 1208

openMF · Feb 2, 2023 · e98209d · e98209d
1 parent de91381
commit e98209d
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Showing 2 changed files with 92 additions and 4 deletions.
diff --git a/app/src/main/java/org/mifos/mobile/ui/activities/PassCodeActivity.kt b/app/src/main/java/org/mifos/mobile/ui/activities/PassCodeActivity.kt
@@ -1,10 +1,25 @@
 package org.mifos.mobile.ui.activities
 
 import android.Manifest
+import android.annotation.SuppressLint
+import android.app.KeyguardManager
+import android.content.Context
 import android.content.DialogInterface
 import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.Color
+import android.hardware.biometrics.BiometricPrompt
+import android.os.Build
 import android.os.Bundle
+import android.os.CancellationSignal
 import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.LinearLayout
+import android.widget.Toast
+import androidx.annotation.RequiresApi
+import androidx.appcompat.widget.AppCompatButton
+import androidx.core.app.ActivityCompat
 
 import com.mifos.mobile.passcode.MifosPassCodeActivity
 import com.mifos.mobile.passcode.utils.EncryptionUtil
@@ -15,15 +30,42 @@ import org.mifos.mobile.utils.Constants
 import org.mifos.mobile.utils.MaterialDialog
 import org.mifos.mobile.utils.Toaster
 
+@RequiresApi(Build.VERSION_CODES.M)
 class PassCodeActivity : MifosPassCodeActivity() {
+
+    private var cancellationSignal: CancellationSignal? = null
+
+    private val authenticationCallback: BiometricPrompt.AuthenticationCallback
+        get() = @RequiresApi(Build.VERSION_CODES.P)
+        object : BiometricPrompt.AuthenticationCallback() {
+            override fun onAuthenticationError(errorCode: Int, errString: CharSequence?) {
+                super.onAuthenticationError(errorCode, errString)
+            }
+            override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult?) {
+                super.onAuthenticationSucceeded(result)
+                startNextActivity()
+            }
+        }
+
+    @SuppressLint("ResourceType")
+    @RequiresApi(Build.VERSION_CODES.M)
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        if (!CheckSelfPermissionAndRequest.checkSelfPermission(this,
-                        Manifest.permission.READ_PHONE_STATE)) {
+        if (!CheckSelfPermissionAndRequest.checkSelfPermission(this,Manifest.permission.READ_PHONE_STATE ))
+        {
             requestPermission()
         }
+        if(findViewById<AppCompatButton>(R.id.btn_save).visibility==View.GONE){
+            val btn=findViewById<AppCompatButton>(R.id.btn_save)
+            btn.visibility=View.VISIBLE
+            btn.text="Use Touch Id"
+            btn.setOnClickListener { openBiometric() }
+        }
+        checkBiometricSupport() // checks if the device has finger print enabled
+        if(findViewById<AppCompatButton>(R.id.btn_save).text.equals("Use Touch Id")){
+            openBiometric()
+        }
     }
-
     /**
      * Uses [CheckSelfPermissionAndRequest] to check for runtime permissions
      */
@@ -63,6 +105,42 @@ class PassCodeActivity : MifosPassCodeActivity() {
                 .createMaterialDialog()
                 .show()
     }
+    private fun getCancellationSignal(): CancellationSignal {
+        cancellationSignal = CancellationSignal()
+        cancellationSignal?.setOnCancelListener {
+
+        }
+        return cancellationSignal as CancellationSignal
+    }
+    @RequiresApi(Build.VERSION_CODES.M)
+    private fun checkBiometricSupport(): Boolean {
+        val keyguardManager = getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
+        if (!keyguardManager.isDeviceSecure) {
+            notifyUser("Fingerprint authentication has not been enabled in settings")
+            return false
+        }
+        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.USE_BIOMETRIC) != PackageManager.PERMISSION_GRANTED) {
+            notifyUser("Fingerprint Authentication Permission is not enabled")
+            return false
+        }
+        return if (packageManager.hasSystemFeature(PackageManager.FEATURE_FINGERPRINT)) {
+            true
+        } else true
+    }
+    private fun openBiometric(){
+        val biometricPrompt = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+            BiometricPrompt.Builder(this)
+                .setTitle("Sign in Using fingerprint")
+                .setNegativeButton(
+                    "Enter Pin",
+                    this.mainExecutor,
+                    DialogInterface.OnClickListener { dialog, which ->
+                    }).build()
+        } else {
+            TODO("VERSION.SDK_INT < P")
+        }
+        biometricPrompt.authenticate(getCancellationSignal(), mainExecutor, authenticationCallback)
+    }
 
     override fun showToaster(view: View, msg: Int) {
         Toaster.show(view, msg)
@@ -71,4 +149,14 @@ class PassCodeActivity : MifosPassCodeActivity() {
     override fun getEncryptionType(): Int {
         return EncryptionUtil.MOBILE_BANKING
     }
+    private fun notifyUser(message: String) {
+        Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
+    }
+
+    override fun onResume() {
+        if(findViewById<AppCompatButton>(R.id.btn_save).text.equals("Use Touch Id")){
+            openBiometric()
+        }
+        super.onResume()
+    }
 }
diff --git a/build.gradle b/build.gradle
@@ -59,7 +59,7 @@ ext {
     retrofitVersion = '2.2.0'
     okHttp3Version = '3.6.0'
     butterKnifeVersion = '8.0.1'
-    dbflowVersion = '4.1.2'
+    dbflowVersion = '4.2.4'
     playServicesVersion = '17.0.0'
     firebaseMessagingVersion = '21.0.1'
     oss_licenses = '17.0.0'