Biometrics: basic ui

#103
alexandr7035 · Mar 5, 2023 · 57ca946 · 57ca946
1 parent 3b7d18c
commit 57ca946
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Showing 7 changed files with 120 additions and 13 deletions.
diff --git a/app/build.gradle b/app/build.gradle
@@ -67,6 +67,7 @@ dependencies {
     implementation 'com.google.android.material:material:1.8.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.biometric:biometric-ktx:1.2.0-alpha05'
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'

diff --git a/.../main/java/by/alexandr7035/affinidi_id/presentation/common/biometrics/BiometricsHelper.kt b/.../main/java/by/alexandr7035/affinidi_id/presentation/common/biometrics/BiometricsHelper.kt
@@ -0,0 +1,14 @@
+package by.alexandr7035.affinidi_id.presentation.common.biometrics
+
+import android.content.Context
+import androidx.biometric.BiometricManager
+import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG
+import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL
+
+
+class BiometricsHelper {
+    fun checkIfBiometricsAvailable(context: Context): Int {
+        val biometricManager = BiometricManager.from(context)
+        return biometricManager.canAuthenticate(BIOMETRIC_STRONG or DEVICE_CREDENTIAL)
+    }
+}
diff --git a/app/src/main/java/by/alexandr7035/affinidi_id/presentation/main_menu/MainMenuFragment.kt b/app/src/main/java/by/alexandr7035/affinidi_id/presentation/main_menu/MainMenuFragment.kt
@@ -4,7 +4,10 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
+import androidx.biometric.BiometricManager
 import androidx.core.content.ContextCompat
+import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.navigation.fragment.findNavController
@@ -14,12 +17,11 @@ import by.alexandr7035.affinidi_id.BuildConfig
 import by.alexandr7035.affinidi_id.R
 import by.alexandr7035.affinidi_id.core.extensions.debug
 import by.alexandr7035.affinidi_id.core.extensions.navigateSafe
+import by.alexandr7035.affinidi_id.core.extensions.showToast
 import by.alexandr7035.affinidi_id.core.extensions.svgLoader
 import by.alexandr7035.affinidi_id.databinding.FragmentMainMenuBinding
+import by.alexandr7035.affinidi_id.presentation.common.biometrics.BiometricsHelper
 import by.kirich1409.viewbindingdelegate.viewBinding
-import coil.ComponentRegistry
-import coil.ImageLoader
-import coil.decode.SvgDecoder
 import coil.load
 import dagger.hilt.android.AndroidEntryPoint
 import timber.log.Timber
@@ -92,5 +94,44 @@ class MainMenuFragment : Fragment() {
 
             true
         }
+
+        binding.biometricsSwitch.setOnCheckedChangeListener { _, isChecked ->
+            if (isChecked) {
+                requireContext().showToast("Enable biometrics", Toast.LENGTH_SHORT)
+//                viewModel.checkBiometricAvailability(requireContext())
+            }
+            else {
+                requireContext().showToast("Disable biometrics", Toast.LENGTH_SHORT)
+            }
+        }
+
+        viewModel.biometricsAvailableStatusLiveData.observe(viewLifecycleOwner) { biometricsStatus ->
+
+            fun disableBiometricsSwitch() {
+                binding.biometricsSwitch.isEnabled = false
+                binding.biometricsSwitch.isChecked = false
+                binding.biometricError.isVisible = true
+            }
+
+            when (biometricsStatus ) {
+                BiometricManager.BIOMETRIC_SUCCESS -> {
+                    requireContext().showToast( "App can authenticate using biometrics.")
+                }
+                BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> {
+                    disableBiometricsSwitch()
+                    binding.biometricError.text = getString(R.string.biometrics_not_available)
+                }
+                BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> {
+                    disableBiometricsSwitch()
+                    binding.biometricError.text = getString(R.string.biometrics_not_available)
+                }
+                BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> {
+                    disableBiometricsSwitch()
+                    binding.biometricError.text = getString(R.string.biometrics_not_enabled)
+                }
+            }
+        }
+
+        viewModel.checkBiometricAvailability(requireContext())
     }
 }
diff --git a/app/src/main/java/by/alexandr7035/affinidi_id/presentation/main_menu/MainMenuViewModel.kt b/app/src/main/java/by/alexandr7035/affinidi_id/presentation/main_menu/MainMenuViewModel.kt
@@ -1,9 +1,11 @@
 package by.alexandr7035.affinidi_id.presentation.main_menu
 
+import android.content.Context
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import by.alexandr7035.affinidi_id.domain.model.profile.UserProfile
 import by.alexandr7035.affinidi_id.domain.usecase.user.GetProfileUseCase
+import by.alexandr7035.affinidi_id.presentation.common.biometrics.BiometricsHelper
 import dagger.hilt.android.lifecycle.HiltViewModel
 import javax.inject.Inject
 
@@ -12,7 +14,17 @@ class MainMenuViewModel @Inject constructor(private val getProfileUseCase: GetPr
 
     val userProfileLiveData = MutableLiveData<UserProfile>()
 
+    private val _biometricsAvailableStatusLiveData = MutableLiveData<Int>()
+    val biometricsAvailableStatusLiveData = _biometricsAvailableStatusLiveData
+
+    private val biometricsHelper = BiometricsHelper()
+
     fun init() {
         userProfileLiveData.value = getProfileUseCase.execute()
     }
+
+    fun checkBiometricAvailability(context: Context) {
+        val res = biometricsHelper.checkIfBiometricsAvailable(context)
+        biometricsAvailableStatusLiveData.value = res
+    }
 }
diff --git a/app/src/main/res/layout/fragment_main_menu.xml b/app/src/main/res/layout/fragment_main_menu.xml
@@ -30,26 +30,56 @@
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/recycler"
         android:layout_width="0dp"
-        android:layout_height="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/default_fragment_margin"
         android:overScrollMode="never"
-        tools:listitem="@layout/view_primary_menu_item"
+        android:paddingStart="@dimen/default_fragment_margin"
+        android:paddingEnd="@dimen/default_fragment_margin"
+        android:paddingTop="@dimen/default_fragment_margin"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/profileImageView"
         tools:itemCount="3"
-        android:layout_marginTop="@dimen/default_fragment_margin"
-        android:padding="@dimen/default_fragment_margin"
-        app:layout_constraintBottom_toTopOf="@id/appVersionView"
+        tools:listitem="@layout/view_primary_menu_item" />
+
+    <androidx.appcompat.widget.SwitchCompat
+        style="@style/SwitchMenuItem"
+        android:text="@string/lock_with_biometrics"
+        android:id="@+id/biometricsSwitch"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:paddingStart="@dimen/default_fragment_margin"
+        android:paddingEnd="@dimen/default_fragment_margin"
+        app:layout_constraintVertical_bias="0"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/appVersionView"
+        app:layout_constraintTop_toBottomOf="@id/recycler"/>
+
+    <TextView
+        android:id="@+id/biometricError"
+        android:visibility="gone"
+        tools:visibility="visible"
+        android:textSize="14sp"
+        android:textColor="@color/gray_300"
+        android:layout_marginStart="@dimen/default_fragment_margin"
+        android:layout_marginEnd="@dimen/default_fragment_margin"
+        tools:text="No biometric features available on this device"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/profileImageView" />
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/biometricsSwitch"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"/>
 
     <TextView
         android:id="@+id/appVersionView"
         style="@style/AppVersionStyle"
-        tools:text="AffinidiID v0.1-alpha"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginBottom="@dimen/default_fragment_margin"
-        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toBottomOf="parent"/>
+        app:layout_constraintStart_toStartOf="parent"
+        tools:text="AffinidiID v0.1-alpha" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -111,4 +111,7 @@
     <string name="claims">Claims</string>
     <string name="issued_by">Issued by</string>
 
+    <string name="lock_with_biometrics">Lock app with biometrics</string>
+    <string name="biometrics_not_available">Biometrics is unavailable on your device</string>
+    <string name="biometrics_not_enabled">Biometrics is not enabled on device. Please, enable biometrics in settings</string>
 </resources>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
@@ -76,13 +76,19 @@
         <item name="android:textColor">@color/gray_500</item>
     </style>
 
+    <style name="SwitchMenuItem">
+        <item name="switchPadding">16dp</item>
+        <item name="android:textSize">18sp</item>
+        <item name="android:textStyle">bold</item>
+        <item name="android:textColor">@color/gray_500</item>
+    </style>
+
     <style name="AppVersionStyle">
         <item name="android:textSize">14sp</item>
         <item name="android:textStyle">bold</item>
         <item name="android:textColor">@color/gray_500</item>
     </style>
 
-
     <style name="ErrorViewTitle">
         <item name="android:textSize">@dimen/error_view_tile_text</item>
         <item name="android:textStyle">bold</item>