[Android] Negative text must be set and non-empty.

[jesuscc1993]

Before submitting a new issue

• I tested using the latest version of the library, as the bug might be already fixed.
• I tested using a supported version of react native.
• I checked for possible duplicate issues, with possible answers.

Bug summary

Using the code below works on iOS, but seems to do nothing on Android.

SimpleBiometrics.requestBioAuth(
  'prompt-title',
  'prompt-message',
  { allowDeviceCredentials: false }
)

The DevTools logs for Android show the following error:
Negative text must be set and non-empty.

Tested on Android 19 Pixel 8 emulator.

Library version

3.0.2

Environment info

System:
  OS: macOS 26.3.1
  CPU: (8) arm64 Apple M1 Pro
  Memory: 76.22 MB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 22.22.1
    path: /var/folders/2_/_4ngbvyj55s3yc47kp_57wx80000gn/T/yarn--1778751683086-0.5107574594565016/node
  Yarn:
    version: 1.22.22
    path: /var/folders/2_/_4ngbvyj55s3yc47kp_57wx80000gn/T/yarn--1778751683086-0.5107574594565016/yarn
  npm:
    version: 10.9.4
    path: ~/.nvm/versions/node/v22.22.1/bin/npm
  Watchman: Not Found
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/Txus/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.4
      - iOS 26.4
      - macOS 26.4
      - tvOS 26.4
      - visionOS 26.4
      - watchOS 26.4
  Android SDK: Not Found
IDEs:
  Android Studio: 2025.3 AI-253.32098.37.2534.15336583
  Xcode:
    version: 26.4.1/17E202
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 21.0.10
    path: /usr/bin/javac
  Ruby:
    version: 3.2.8
    path: /Users/Txus/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 20.1.0
    wanted: 20.1.0
  react:
    installed: 19.2.3
    wanted: 19.2.3
  react-native:
    installed: 0.84.1
    wanted: 0.84.1
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Steps to reproduce

1. run the readme's example code in Android

Reproducible example repository

N/A

[jesuscc1993]

Here is a quick patch to fix the issue:

react-native-simple-biometrics+3.0.2.patch

diff --git a/node_modules/react-native-simple-biometrics/android/src/main/java/com/simplebiometrics/SimpleBiometricsModule.kt b/node_modules/react-native-simple-biometrics/android/src/main/java/com/simplebiometrics/SimpleBiometricsModule.kt
index afdfca4..fd23a7f 100644
--- a/node_modules/react-native-simple-biometrics/android/src/main/java/com/simplebiometrics/SimpleBiometricsModule.kt
+++ b/node_modules/react-native-simple-biometrics/android/src/main/java/com/simplebiometrics/SimpleBiometricsModule.kt
@@ -57,6 +57,7 @@ class SimpleBiometricsModule(reactContext: ReactApplicationContext) :
   override fun requestBioAuth(
     promptTitle: String?,
     promptMessage: String?,
+    promptCancel: String?,
     allowDeviceCredentials: Boolean,
     promise: Promise?
   ) {
@@ -87,11 +88,16 @@ class SimpleBiometricsModule(reactContext: ReactApplicationContext) :
           )
 
           val authenticators = getAllowedAuthenticators(allowDeviceCredentials)
-          val promptInfo: BiometricPrompt.PromptInfo = BiometricPrompt.PromptInfo.Builder()
+          val promptInfoBuilder = BiometricPrompt.PromptInfo.Builder()
             .setAllowedAuthenticators(authenticators)
             .setTitle(promptTitle ?: "")
             .setSubtitle(promptMessage)
-            .build()
+
+          if (!allowDeviceCredentials) {
+            promptInfoBuilder.setNegativeButtonText(promptCancel ?: "")
+          }
+
+          val promptInfo: BiometricPrompt.PromptInfo = promptInfoBuilder.build()
 
           prompt.authenticate(promptInfo)
         } else {
diff --git a/node_modules/react-native-simple-biometrics/ios/SimpleBiometrics.mm b/node_modules/react-native-simple-biometrics/ios/SimpleBiometrics.mm
index 97c4ade..02d2699 100644
--- a/node_modules/react-native-simple-biometrics/ios/SimpleBiometrics.mm
+++ b/node_modules/react-native-simple-biometrics/ios/SimpleBiometrics.mm
@@ -46,7 +46,7 @@ - (void)canAuthenticate:(BOOL)allowDeviceCredentials resolve:(nonnull RCTPromise
   }
 }
 
-- (void)requestBioAuth:(nonnull NSString *)promptTitle promptMessage:(nonnull NSString *)promptMessage allowDeviceCredentials:(BOOL)allowDeviceCredentials resolve:(nonnull RCTPromiseResolveBlock)resolve reject:(nonnull RCTPromiseRejectBlock)reject {
+- (void)requestBioAuth:(nonnull NSString *)promptTitle promptMessage:(nonnull NSString *)promptMessage promptCancel:(nonnull NSString *)promptCancel allowDeviceCredentials:(BOOL)allowDeviceCredentials resolve:(nonnull RCTPromiseResolveBlock)resolve reject:(nonnull RCTPromiseRejectBlock)reject {
   @try {
     dispatch_async(
                    dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
diff --git a/node_modules/react-native-simple-biometrics/lib/module/index.js b/node_modules/react-native-simple-biometrics/lib/module/index.js
index b2712cf..3dca633 100644
--- a/node_modules/react-native-simple-biometrics/lib/module/index.js
+++ b/node_modules/react-native-simple-biometrics/lib/module/index.js
@@ -17,17 +17,20 @@ const canAuthenticate = options => {
  * note: promise will resolve when successful
  * but will be rejected when not with an error message
  */
-const requestBioAuth = (promptTitle, promptMessage, options) => {
+const requestBioAuth = (promptTitle, promptMessage, promptCancel, options) => {
   if (typeof promptTitle !== 'string' || !promptTitle) {
     throw new Error('prompt title must be a non empty string');
   }
   if (typeof promptMessage !== 'string' || !promptMessage) {
     throw new Error('prompt message must be a non empty string');
   }
+  if (typeof promptCancel !== 'string' || !promptCancel) {
+    throw new Error('prompt cancel must be a non empty string');
+  }
   const {
     allowDeviceCredentials = true
   } = options ?? {};
-  return SimpleBiometrics.requestBioAuth(promptTitle, promptMessage, allowDeviceCredentials);
+  return SimpleBiometrics.requestBioAuth(promptTitle, promptMessage, promptCancel, allowDeviceCredentials);
 };
 const RNBiometrics = {
   requestBioAuth,
diff --git a/node_modules/react-native-simple-biometrics/lib/typescript/src/NativeSimpleBiometrics.d.ts b/node_modules/react-native-simple-biometrics/lib/typescript/src/NativeSimpleBiometrics.d.ts
index a7d5eac..36f0828 100644
--- a/node_modules/react-native-simple-biometrics/lib/typescript/src/NativeSimpleBiometrics.d.ts
+++ b/node_modules/react-native-simple-biometrics/lib/typescript/src/NativeSimpleBiometrics.d.ts
@@ -1,7 +1,8 @@
-import { type TurboModule } from 'react-native';
+import { TurboModule } from 'react-native';
+
 export interface Spec extends TurboModule {
     canAuthenticate(allowDeviceCredentials: boolean): Promise<boolean>;
-    requestBioAuth(promptTitle: string, promptMessage: string, allowDeviceCredentials: boolean): Promise<boolean>;
+    requestBioAuth(promptTitle: string, promptMessage: string, promptCancel: string, allowDeviceCredentials: boolean): Promise<boolean>;
 }
 declare const _default: Spec;
 export default _default;
diff --git a/node_modules/react-native-simple-biometrics/lib/typescript/src/index.d.ts b/node_modules/react-native-simple-biometrics/lib/typescript/src/index.d.ts
index 4319935..62692be 100644
--- a/node_modules/react-native-simple-biometrics/lib/typescript/src/index.d.ts
+++ b/node_modules/react-native-simple-biometrics/lib/typescript/src/index.d.ts
@@ -5,7 +5,7 @@ type Options = {
     allowDeviceCredentials: boolean;
 };
 declare const RNBiometrics: {
-    requestBioAuth: (promptTitle: string, promptMessage: string, options?: Options) => Promise<boolean>;
+    requestBioAuth: (promptTitle: string, promptMessage: string, promptCancel: string, options?: Options) => Promise<boolean>;
     canAuthenticate: (options?: Options) => Promise<boolean>;
 };
 export default RNBiometrics;
diff --git a/node_modules/react-native-simple-biometrics/src/NativeSimpleBiometrics.ts b/node_modules/react-native-simple-biometrics/src/NativeSimpleBiometrics.ts
index bd2249a..c1aedf9 100644
--- a/node_modules/react-native-simple-biometrics/src/NativeSimpleBiometrics.ts
+++ b/node_modules/react-native-simple-biometrics/src/NativeSimpleBiometrics.ts
@@ -1,10 +1,11 @@
-import { TurboModuleRegistry, type TurboModule } from 'react-native';
+import { TurboModule, TurboModuleRegistry } from 'react-native';
 
 export interface Spec extends TurboModule {
   canAuthenticate(allowDeviceCredentials: boolean): Promise<boolean>;
   requestBioAuth(
     promptTitle: string,
     promptMessage: string,
+    promptCancel: string,
     allowDeviceCredentials: boolean
   ): Promise<boolean>;
 }
diff --git a/node_modules/react-native-simple-biometrics/src/index.tsx b/node_modules/react-native-simple-biometrics/src/index.tsx
index 21dbffe..f1973cd 100644
--- a/node_modules/react-native-simple-biometrics/src/index.tsx
+++ b/node_modules/react-native-simple-biometrics/src/index.tsx
@@ -27,6 +27,8 @@ const requestBioAuth = (
   promptTitle: string,
   /** The app-provided reason for requesting authentication, which displays in the authentication dialog presented to the user. */
   promptMessage: string,
+  /** title of cancel button in prompt */
+  promptCancel: string,
   options?: Options
 ): Promise<boolean> => {
   if (typeof promptTitle !== 'string' || !promptTitle) {
@@ -37,11 +39,16 @@ const requestBioAuth = (
     throw new Error('prompt message must be a non empty string');
   }
 
+  if (typeof promptCancel !== 'string' || !promptCancel) {
+    throw new Error('prompt cancel must be a non empty string');
+  }
+
   const { allowDeviceCredentials = true } = options ?? {};
 
   return SimpleBiometrics.requestBioAuth(
     promptTitle,
     promptMessage,
+    promptCancel,
     allowDeviceCredentials
   );
 };