66 task biometric auth as another option and an alternative to normal email password signin fingerprint recognition

app/build.gradle

@@ -15,7 +15,7 @@ android {
 
     defaultConfig {
         applicationId "com.steve_md.smartmkulima"
-        minSdk 21
+        minSdk 23
         targetSdk 34
         versionCode 1
         versionName "1.0"
@@ -54,24 +54,22 @@ android {
 dependencies {
 
     implementation 'androidx.legacy:legacy-support-v13:1.0.0'
-    implementation 'com.google.firebase:firebase-auth-ktx:22.3.1'
-    implementation 'com.google.firebase:firebase-database-ktx:20.3.0'
-    implementation 'com.google.firebase:firebase-storage-ktx:20.3.0'
-    implementation 'com.google.firebase:firebase-firestore-ktx:24.10.2'
-    def nav_version = "2.7.7"
-    def lifecycle_version = "2.7.0"
+    implementation 'com.google.firebase:firebase-auth-ktx:23.0.0'
+    implementation 'com.google.firebase:firebase-database-ktx:21.0.0'
+    implementation 'com.google.firebase:firebase-storage-ktx:21.0.0'
+    implementation 'com.google.firebase:firebase-firestore-ktx:25.0.0'
     def timber_version = "5.0.1"
     def room_version = "2.6.1"
 
 
     // Ktx
-    implementation 'androidx.core:core-ktx:1.12.0'
+    implementation 'androidx.core:core-ktx:1.13.1'
 
     // AppCompat
-    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.7.0'
 
     // Material
-    implementation 'com.google.android.material:material:1.11.0'
+    implementation 'com.google.android.material:material:1.12.0'
 
     // Constraint Layout
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
@@ -82,15 +80,15 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 
     // Navigation Components
-    implementation("androidx.navigation:navigation-fragment-ktx:$nav_version")
-    implementation("androidx.navigation:navigation-ui-ktx:$nav_version")
+    implementation("androidx.navigation:navigation-fragment-ktx:2.7.7")
+    implementation("androidx.navigation:navigation-ui-ktx:2.7.7")
 
 
     // Alternatively - just LiveData
-    implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
+    implementation("androidx.lifecycle:lifecycle-livedata-ktx:2.8.2")
 
     // Alternatively - just ViewModel
-    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.8.2")
 
     // Dagger - Hilt
     implementation 'com.google.dagger:hilt-android:2.50'
@@ -126,7 +124,7 @@ dependencies {
 
     // Maps - Dependency
     implementation 'com.google.android.gms:play-services-maps:18.2.0'
-    implementation 'com.google.android.gms:play-services-location:21.1.0'
+    implementation 'com.google.android.gms:play-services-location:21.3.0'
 
     // Lottie Animation
     implementation 'com.airbnb.android:lottie:6.0.0'
@@ -147,4 +145,8 @@ dependencies {
 
     // Step View
     implementation 'com.github.shuhart:stepview:1.5.1'
+
+    // Biometric authentication
+    implementation "androidx.biometric:biometric:1.1.0"
+
 }

app/src/main/java/com/steve_md/smartmkulima/ui/fragments/auth/SignInDetailsWithEmailFragment.kt

@@ -1,10 +1,20 @@
 package com.steve_md.smartmkulima.ui.fragments.auth
 
+import android.annotation.SuppressLint
+import android.content.Intent
+import android.os.Build
 import android.os.Bundle
+import android.provider.Settings
+import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
+import androidx.biometric.BiometricManager
+import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG
+import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL
+import androidx.biometric.BiometricPrompt
+import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
@@ -16,8 +26,10 @@ import com.steve_md.smartmkulima.utils.EventObserver
 import com.steve_md.smartmkulima.utils.displaySnackBar
 import com.steve_md.smartmkulima.utils.hideKeyboard
 import com.steve_md.smartmkulima.utils.snackBar
+import com.steve_md.smartmkulima.utils.toast
 import com.steve_md.smartmkulima.viewmodel.AuthViewModel
 import dagger.hilt.android.AndroidEntryPoint
+import timber.log.Timber
 
 
 @AndroidEntryPoint
@@ -31,12 +43,155 @@ class SignInDetailsWithEmailFragment : Fragment() {
 
     private val authViewModel: AuthViewModel by viewModels()
 
+    private lateinit var biometricPrompt: BiometricPrompt
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+
+    }
+
+    private fun authenticate() {
+
+        /**
+         * Check whether the Authentication is available
+         * @param biometricManager is present, is enrolled
+         */
+        val biometricManager = BiometricManager.from(requireContext())
+        when(biometricManager.canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_STRONG)) {
+            BiometricManager.BIOMETRIC_SUCCESS -> {
+                Timber.tag("Biometric").e("Authenticated using biometrics")
+                val prompt = createBiometricPrompt()
+                prompt.authenticate(createPromptInfo())
+            }
+            BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> {
+                Timber.tag(requireActivity().toString())
+                    .e("onCreate: Biometric features are currently unavailable.")
+            }
+
+            BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> {
+                // The user didn't enroll in biometrics that your app accepts, prompt them to enroll in it
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                    val enrollIntent =
+                        Intent(Settings.ACTION_BIOMETRIC_ENROLL).apply {
+                            putExtra(
+                                Settings.EXTRA_BIOMETRIC_AUTHENTICATORS_ALLOWED,
+                                BIOMETRIC_STRONG or DEVICE_CREDENTIAL
+                            )
+                        }
+                    startActivityForResult(enrollIntent, REQUEST_CODE)
+                }
+            }
+
+            BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> {
+                Timber.d("Biometric features hardware is missing")
+            }
+
+            BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED -> {
+
+            }
+
+            BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED -> {
+
+            }
+
+            BiometricManager.BIOMETRIC_STATUS_UNKNOWN -> {
+
+            }
+        }
+    }
+
+    private fun setUpBinding() {
+        binding.fingerprintToPress.setOnClickListener {
+            authenticate()
+        }
+    }
+
+    private fun createPromptInfo(): BiometricPrompt.PromptInfo =
+        BiometricPrompt.PromptInfo.Builder()
+            .setTitle("Login")
+            .setSubtitle("Log in to your Agri-Sasa account")
+            .setDescription("Please authenticate using biometrics")
+            .setNegativeButtonText("CANCEL")
+            .setAllowedAuthenticators(BIOMETRIC_STRONG)
+            .setConfirmationRequired(false)
+            .build()
+
+
+    /**
+     *
+     * Display biometric prompt
+     * @param biometricPrompt
+     */
+    private fun createBiometricPrompt(): BiometricPrompt {
+        val executor = ContextCompat.getMainExecutor(requireContext())
+
+        val callBack = object : BiometricPrompt.AuthenticationCallback() {
+            @SuppressLint("TimberArgCount")
+            override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
+                super.onAuthenticationError(errorCode, errString)
+                Timber.tag(this@SignInDetailsWithEmailFragment.toString())
+                    .d("$errorCode :: $errString")
+
+                if (errorCode == BiometricPrompt.ERROR_NEGATIVE_BUTTON) {
+                    loginWithEmailPasswordOtherwise()
+                } else if (errorCode == BiometricPrompt.ERROR_NO_BIOMETRICS) {
+                    snackBar("Device does not support Fingerprint biometrics")
+                    loginWithEmailPasswordOtherwise()
+                } else if (errorCode == BiometricPrompt.ERROR_CANCELED) {
+                    loginWithEmailPasswordOtherwise()
+                } else if (errorCode == BiometricPrompt.ERROR_SECURITY_UPDATE_REQUIRED) {
+                    snackBar("Security violation")
+                    loginWithEmailPasswordOtherwise()
+                } else if (errorCode == BiometricPrompt.ERROR_TIMEOUT) {
+                    snackBar("Fingerprint failed. try again or login using email instead")
+                } else {
+                    Timber.tag(this.toString())
+                        .e("%s%s", "%s || ", "onAuthenticationError: %s", errorCode, errString)
+                }
+
+            }
+
+            override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
+                super.onAuthenticationSucceeded(result)
+                Timber.tag(this.toString()).d("Authentication was successful")
+                toast("Authenticated with biometrics successfully")
+
+                navigateHome()
+                // showEncryptedMessage(result.cryptoObject)
+            }
+
+            override fun onAuthenticationFailed() {
+                super.onAuthenticationFailed()
+                Timber.tag(this.toString()).d("Authentication failed for an unknown reason")
+                toast("Unknown authentication error")
+            }
+
+        }
+
+        return BiometricPrompt(this.requireActivity(), executor, callBack)
+    }
+
+    private fun showEncryptedMessage(cryptoObject: BiometricPrompt.CryptoObject?) {
+
+    }
+
+    private fun loginWithEmailPasswordOtherwise() {
+
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View {
         _binding = FragmentSignInDetailsWithEmailBinding.inflate(layoutInflater, container, false)
+        setUpBinding()
+
+        biometricPrompt = createBiometricPrompt()
+
+        authenticate()
+
         return binding.root
     }
 
@@ -98,4 +253,8 @@ class SignInDetailsWithEmailFragment : Fragment() {
         //findNavController().navigate(R.id.action_signInDetailsWithEmailFragment_to_signInDetailsFragment2)
         displaySnackBar("Feature is coming soon!")
     }
+
+    companion object {
+        const val REQUEST_CODE = 1333
+    }
 }

app/src/main/java/com/steve_md/smartmkulima/ui/fragments/main/HomeDashboardFragment.kt

@@ -55,6 +55,11 @@ class HomeDashboardFragment : Fragment() {
         firebaseAuth = FirebaseAuth.getInstance()
 
         val userId =  firebaseAuth!!.uid
+
+        if (userId == null) {
+            Timber.e("Firebase User ID is null")
+            return binding.root
+        }
         val currentUserLogged = firebaseAuth!!.currentUser
 
         databaseReference = FirebaseDatabase.getInstance().getReference("users").child(userId!!)

app/src/main/res/drawable/baseline_fingerprint_24.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:alpha="0.61" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+
+    <path android:fillColor="@android:color/white" android:pathData="M17.81,4.47c-0.08,0 -0.16,-0.02 -0.23,-0.06C15.66,3.42 14,3 12.01,3c-1.98,0 -3.86,0.47 -5.57,1.41 -0.24,0.13 -0.54,0.04 -0.68,-0.2 -0.13,-0.24 -0.04,-0.55 0.2,-0.68C7.82,2.52 9.86,2 12.01,2c2.13,0 3.99,0.47 6.03,1.52 0.25,0.13 0.34,0.43 0.21,0.67 -0.09,0.18 -0.26,0.28 -0.44,0.28zM3.5,9.72c-0.1,0 -0.2,-0.03 -0.29,-0.09 -0.23,-0.16 -0.28,-0.47 -0.12,-0.7 0.99,-1.4 2.25,-2.5 3.75,-3.27C9.98,4.04 14,4.03 17.15,5.65c1.5,0.77 2.76,1.86 3.75,3.25 0.16,0.22 0.11,0.54 -0.12,0.7 -0.23,0.16 -0.54,0.11 -0.7,-0.12 -0.9,-1.26 -2.04,-2.25 -3.39,-2.94 -2.87,-1.47 -6.54,-1.47 -9.4,0.01 -1.36,0.7 -2.5,1.7 -3.4,2.96 -0.08,0.14 -0.23,0.21 -0.39,0.21zM9.75,21.79c-0.13,0 -0.26,-0.05 -0.35,-0.15 -0.87,-0.87 -1.34,-1.43 -2.01,-2.64 -0.69,-1.23 -1.05,-2.73 -1.05,-4.34 0,-2.97 2.54,-5.39 5.66,-5.39s5.66,2.42 5.66,5.39c0,0.28 -0.22,0.5 -0.5,0.5s-0.5,-0.22 -0.5,-0.5c0,-2.42 -2.09,-4.39 -4.66,-4.39 -2.57,0 -4.66,1.97 -4.66,4.39 0,1.44 0.32,2.77 0.93,3.85 0.64,1.15 1.08,1.64 1.85,2.42 0.19,0.2 0.19,0.51 0,0.71 -0.11,0.1 -0.24,0.15 -0.37,0.15zM16.92,19.94c-1.19,0 -2.24,-0.3 -3.1,-0.89 -1.49,-1.01 -2.38,-2.65 -2.38,-4.39 0,-0.28 0.22,-0.5 0.5,-0.5s0.5,0.22 0.5,0.5c0,1.41 0.72,2.74 1.94,3.56 0.71,0.48 1.54,0.71 2.54,0.71 0.24,0 0.64,-0.03 1.04,-0.1 0.27,-0.05 0.53,0.13 0.58,0.41 0.05,0.27 -0.13,0.53 -0.41,0.58 -0.57,0.11 -1.07,0.12 -1.21,0.12zM14.91,22c-0.04,0 -0.09,-0.01 -0.13,-0.02 -1.59,-0.44 -2.63,-1.03 -3.72,-2.1 -1.4,-1.39 -2.17,-3.24 -2.17,-5.22 0,-1.62 1.38,-2.94 3.08,-2.94 1.7,0 3.08,1.32 3.08,2.94 0,1.07 0.93,1.94 2.08,1.94s2.08,-0.87 2.08,-1.94c0,-3.77 -3.25,-6.83 -7.25,-6.83 -2.84,0 -5.44,1.58 -6.61,4.03 -0.39,0.81 -0.59,1.76 -0.59,2.8 0,0.78 0.07,2.01 0.67,3.61 0.1,0.26 -0.03,0.55 -0.29,0.64 -0.26,0.1 -0.55,-0.04 -0.64,-0.29 -0.49,-1.31 -0.73,-2.61 -0.73,-3.96 0,-1.2 0.23,-2.29 0.68,-3.24 1.33,-2.79 4.28,-4.6 7.51,-4.6 4.55,0 8.25,3.51 8.25,7.83 0,1.62 -1.38,2.94 -3.08,2.94s-3.08,-1.32 -3.08,-2.94c0,-1.07 -0.93,-1.94 -2.08,-1.94s-2.08,0.87 -2.08,1.94c0,1.71 0.66,3.31 1.87,4.51 0.95,0.94 1.86,1.46 3.27,1.85 0.27,0.07 0.42,0.35 0.35,0.61 -0.05,0.23 -0.26,0.38 -0.47,0.38z"/>
+
+</vector>

app/src/main/res/layout/fragment_sign_in_details_with_email.xml

@@ -82,12 +82,14 @@
         app:endIconMode="clear_text"
         android:textColor="@color/textColor"
         app:endIconTint="@color/SilverGray"
+
         app:layout_constraintEnd_toEndOf="@id/textView2"
         app:layout_constraintStart_toStartOf="@id/textView2"
         app:layout_constraintTop_toBottomOf="@id/textView2">
 
         <com.google.android.material.textfield.TextInputEditText
             android:id="@+id/inputLoginEmail"
+            android:fontFamily="@font/montserrat"
             android:layout_width="match_parent"
             android:textColor="@color/textColor"
             android:layout_height="wrap_content"
@@ -124,6 +126,7 @@
             android:inputType="textPassword"
             android:textColor="@color/textColor"
             android:id="@+id/inputLoginPassword"
+            android:fontFamily="@font/montserrat"
             />
 
     </com.google.android.material.textfield.TextInputLayout>
@@ -134,7 +137,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginStart="45dp"
-        android:layout_marginTop="150dp"
+        android:layout_marginTop="100dp"
         android:layout_marginEnd="45dp"
         android:backgroundTint="@color/main1"
         android:fontFamily="@font/montserrat_bold"
@@ -162,7 +165,7 @@
     <LinearLayout
         android:id="@+id/linearLayout8"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="30dp"
         android:layout_marginTop="16dp"
         android:orientation="horizontal"
         app:layout_constraintEnd_toEndOf="@id/signInWithEmailButton"
@@ -237,4 +240,27 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/linearLayout8" />
+
+    <TextView
+        android:id="@+id/textViewFingerprint"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:fontFamily="@font/montserrat_medium"
+        android:text="Use fingerprint"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <ImageView
+        android:id="@+id/fingerprintToPress"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:layout_marginBottom="8dp"
+        android:scaleType="centerCrop"
+        android:src="@drawable/baseline_fingerprint_24"
+        app:layout_constraintBottom_toTopOf="@id/textViewFingerprint"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        android:contentDescription="fingerprint" />
 </androidx.constraintlayout.widget.ConstraintLayout>