Added biometric dialog instead of fingerprint one

app/build.gradle

@@ -130,6 +130,7 @@ dependencies {
     implementation 'androidx.transition:transition:1.2.0'
     implementation 'androidx.multidex:multidex:2.0.1'
     implementation 'androidx.core:core-ktx:1.1.0'
+    implementation 'androidx.biometric:biometric:1.0.0'
     implementation 'com.google.android.material:material:1.1.0-beta01'
     implementation 'com.karumi:dexter:6.0.0'
 }

app/src/main/java/com/topjohnwu/magisk/model/events/dialog/BiometricDialog.kt

@@ -0,0 +1,54 @@
+package com.topjohnwu.magisk.model.events.dialog
+
+import android.os.Handler
+import androidx.appcompat.app.AppCompatActivity
+import androidx.biometric.BiometricPrompt
+import com.topjohnwu.magisk.model.events.ActivityExecutor
+import com.topjohnwu.magisk.model.events.ViewEvent
+
+class BiometricDialog(
+    builder: Builder.() -> Unit
+) : ViewEvent(), ActivityExecutor {
+
+    private var listenerOnFailure: GenericDialogListener = {}
+    private var listenerOnSuccess: GenericDialogListener = {}
+
+    init {
+        builder(Builder())
+    }
+
+    override fun invoke(activity: AppCompatActivity) {
+        val handler = Handler()
+        val prompt = BiometricPrompt.PromptInfo.Builder()
+            .setNegativeButtonText(activity.getString(android.R.string.cancel))
+            .build()
+
+        val callback = object : BiometricPrompt.AuthenticationCallback() {
+            override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
+                listenerOnFailure()
+            }
+
+            override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
+                listenerOnSuccess()
+            }
+
+            override fun onAuthenticationFailed() {
+                listenerOnFailure()
+            }
+        }
+        BiometricPrompt(activity, { handler.post(it) }, callback)
+            .authenticate(prompt/*launch with no crypto for now*/)
+    }
+
+    inner class Builder internal constructor() {
+
+        fun onFailure(listener: GenericDialogListener) {
+            listenerOnFailure = listener
+        }
+
+        fun onSuccess(listener: GenericDialogListener) {
+            listenerOnSuccess = listener
+        }
+    }
+
+}

app/src/main/java/com/topjohnwu/magisk/model/events/dialog/FingerprintDialog.kt

@@ -6,7 +6,15 @@ import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.utils.FingerprintHelper
 import com.topjohnwu.magisk.utils.Utils
 import com.topjohnwu.magisk.view.MagiskDialog
+import timber.log.Timber
 
+@Deprecated(
+    "Use Biometrics instead",
+    ReplaceWith(
+        "BiometricDialog",
+        imports = ["com.topjohnwu.magisk.model.events.dialog.BiometricDialog"]
+    )
+)
 class FingerprintDialog(
     builder: Builder.() -> Unit
 ) : DialogEvent() {
@@ -15,7 +23,7 @@ class FingerprintDialog(
     private var helper: Helper? = null
         get() {
             if (field == null) {
-                runCatching { field = Helper() }
+                runCatching { field = Helper() }.onFailure { Timber.e(it) }
             }
             return field
         }

app/src/main/java/com/topjohnwu/magisk/redesign/superuser/SuperuserViewModel.kt

@@ -13,7 +13,7 @@ import com.topjohnwu.magisk.model.entity.MagiskPolicy
 import com.topjohnwu.magisk.model.entity.recycler.PolicyItem
 import com.topjohnwu.magisk.model.events.PolicyUpdateEvent
 import com.topjohnwu.magisk.model.events.SnackbarEvent
-import com.topjohnwu.magisk.model.events.dialog.FingerprintDialog
+import com.topjohnwu.magisk.model.events.dialog.BiometricDialog
 import com.topjohnwu.magisk.model.events.dialog.SuperuserRevokeDialog
 import com.topjohnwu.magisk.model.navigation.Navigation
 import com.topjohnwu.magisk.redesign.compat.CompatViewModel
@@ -72,7 +72,7 @@ class SuperuserViewModel(
             .add()
 
         if (FingerprintHelper.useFingerprint()) {
-            FingerprintDialog {
+            BiometricDialog {
                 onSuccess { updateState() }
             }.publish()
         } else {
@@ -116,7 +116,7 @@ class SuperuserViewModel(
         }
 
         if (FingerprintHelper.useFingerprint()) {
-            FingerprintDialog {
+            BiometricDialog {
                 onSuccess { updateState() }
                 onFailure { item.isEnabled.toggle() }
             }.publish()