├── app
├── .gitignore
├── src
│ ├── main
│ │ ├── res
│ │ │ ├── values
│ │ │ │ ├── strings.xml
│ │ │ │ ├── colors.xml
│ │ │ │ └── themes.xml
│ │ │ ├── mipmap-hdpi
│ │ │ │ ├── ic_launcher.webp
│ │ │ │ └── ic_launcher_round.webp
│ │ │ ├── mipmap-mdpi
│ │ │ │ ├── ic_launcher.webp
│ │ │ │ └── ic_launcher_round.webp
│ │ │ ├── mipmap-xhdpi
│ │ │ │ ├── ic_launcher.webp
│ │ │ │ └── ic_launcher_round.webp
│ │ │ ├── mipmap-xxhdpi
│ │ │ │ ├── ic_launcher.webp
│ │ │ │ └── ic_launcher_round.webp
│ │ │ ├── mipmap-xxxhdpi
│ │ │ │ ├── ic_launcher.webp
│ │ │ │ └── ic_launcher_round.webp
│ │ │ ├── mipmap-anydpi-v26
│ │ │ │ ├── ic_launcher.xml
│ │ │ │ └── ic_launcher_round.xml
│ │ │ ├── values-night
│ │ │ │ └── themes.xml
│ │ │ ├── layout
│ │ │ │ ├── activity_main.xml
│ │ │ │ └── activity_second.xml
│ │ │ ├── drawable-v24
│ │ │ │ └── ic_launcher_foreground.xml
│ │ │ └── drawable
│ │ │ │ └── ic_launcher_background.xml
│ │ ├── java
│ │ │ └── com
│ │ │ │ └── adematici
│ │ │ │ └── androidbiometricauthentication
│ │ │ │ ├── SecondActivity.kt
│ │ │ │ └── MainActivity.kt
│ │ └── AndroidManifest.xml
│ ├── test
│ │ └── java
│ │ │ └── com
│ │ │ └── adematici
│ │ │ └── androidbiometricauthentication
│ │ │ └── ExampleUnitTest.kt
│ └── androidTest
│ │ └── java
│ │ └── com
│ │ └── adematici
│ │ └── androidbiometricauthentication
│ │ └── ExampleInstrumentedTest.kt
├── proguard-rules.pro
└── build.gradle
├── .idea
├── .name
├── .gitignore
├── compiler.xml
├── vcs.xml
├── deploymentTargetDropDown.xml
├── misc.xml
└── gradle.xml
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── .gitignore
├── settings.gradle
├── LICENSE
├── gradle.properties
├── gradlew.bat
├── README.md
└── gradlew
/app/.gitignore:
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1 | /build
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/.idea/.name:
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1 | Android Biometric Authentication
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/.idea/.gitignore:
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1 | # Default ignored files
2 | /shelf/
3 | /workspace.xml
4 |
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/app/src/main/res/values/strings.xml:
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1 |
2 | Android Biometric Authentication
3 |
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/gradle/wrapper/gradle-wrapper.jar:
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/app/src/main/res/mipmap-hdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-mdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp:
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https://raw.githubusercontent.com/aticiadem/AndroidBiometricAuthentication/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
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/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp:
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/.idea/compiler.xml:
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/.idea/vcs.xml:
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/gradle/wrapper/gradle-wrapper.properties:
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1 | #Sat Aug 07 18:50:05 TRT 2021
2 | distributionBase=GRADLE_USER_HOME
3 | distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
4 | distributionPath=wrapper/dists
5 | zipStorePath=wrapper/dists
6 | zipStoreBase=GRADLE_USER_HOME
7 |
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/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/caches
5 | /.idea/libraries
6 | /.idea/modules.xml
7 | /.idea/workspace.xml
8 | /.idea/navEditor.xml
9 | /.idea/assetWizardSettings.xml
10 | .DS_Store
11 | /build
12 | /captures
13 | .externalNativeBuild
14 | .cxx
15 | local.properties
16 |
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/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml:
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/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml:
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/settings.gradle:
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1 | dependencyResolutionManagement {
2 | repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
3 | repositories {
4 | google()
5 | mavenCentral()
6 | jcenter() // Warning: this repository is going to shut down soon
7 | }
8 | }
9 | rootProject.name = "Android Biometric Authentication"
10 | include ':app'
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/app/src/main/res/values/colors.xml:
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1 |
2 |
3 | #FFBB86FC
4 | #FF6200EE
5 | #FF3700B3
6 | #FF03DAC5
7 | #FF018786
8 | #FF000000
9 | #FFFFFFFF
10 |
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/app/src/test/java/com/adematici/androidbiometricauthentication/ExampleUnitTest.kt:
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1 | package com.adematici.androidbiometricauthentication
2 |
3 | import org.junit.Test
4 |
5 | import org.junit.Assert.*
6 |
7 | /**
8 | * Example local unit test, which will execute on the development machine (host).
9 | *
10 | * See [testing documentation](http://d.android.com/tools/testing).
11 | */
12 | class ExampleUnitTest {
13 | @Test
14 | fun addition_isCorrect() {
15 | assertEquals(4, 2 + 2)
16 | }
17 | }
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/.idea/deploymentTargetDropDown.xml:
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/.idea/misc.xml:
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/.idea/gradle.xml:
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
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/app/src/main/java/com/adematici/androidbiometricauthentication/SecondActivity.kt:
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1 | package com.adematici.androidbiometricauthentication
2 |
3 | import android.content.Intent
4 | import androidx.appcompat.app.AppCompatActivity
5 | import android.os.Bundle
6 | import com.adematici.androidbiometricauthentication.databinding.ActivitySecondBinding
7 |
8 | class SecondActivity : AppCompatActivity() {
9 |
10 | private lateinit var binding: ActivitySecondBinding
11 |
12 | override fun onCreate(savedInstanceState: Bundle?) {
13 | super.onCreate(savedInstanceState)
14 | binding = ActivitySecondBinding.inflate(layoutInflater)
15 | setContentView(binding.root)
16 |
17 | binding.buttonBack.setOnClickListener {
18 | val intent = Intent(this,MainActivity::class.java)
19 | startActivity(intent)
20 | }
21 |
22 | }
23 |
24 | }
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/app/src/androidTest/java/com/adematici/androidbiometricauthentication/ExampleInstrumentedTest.kt:
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1 | package com.adematici.androidbiometricauthentication
2 |
3 | import androidx.test.platform.app.InstrumentationRegistry
4 | import androidx.test.ext.junit.runners.AndroidJUnit4
5 |
6 | import org.junit.Test
7 | import org.junit.runner.RunWith
8 |
9 | import org.junit.Assert.*
10 |
11 | /**
12 | * Instrumented test, which will execute on an Android device.
13 | *
14 | * See [testing documentation](http://d.android.com/tools/testing).
15 | */
16 | @RunWith(AndroidJUnit4::class)
17 | class ExampleInstrumentedTest {
18 | @Test
19 | fun useAppContext() {
20 | // Context of the app under test.
21 | val appContext = InstrumentationRegistry.getInstrumentation().targetContext
22 | assertEquals("com.adematici.androidbiometricauthentication", appContext.packageName)
23 | }
24 | }
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/app/src/main/res/values/themes.xml:
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/app/src/main/res/values-night/themes.xml:
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/app/src/main/AndroidManifest.xml:
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29 |
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/LICENSE:
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1 | MIT License
2 |
3 | Copyright (c) 2021 Adem ATİCİ
4 |
5 | Permission is hereby granted, free of charge, to any person obtaining a copy
6 | of this software and associated documentation files (the "Software"), to deal
7 | in the Software without restriction, including without limitation the rights
8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 |
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 |
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 |
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/gradle.properties:
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1 | # Project-wide Gradle settings.
2 | # IDE (e.g. Android Studio) users:
3 | # Gradle settings configured through the IDE *will override*
4 | # any settings specified in this file.
5 | # For more details on how to configure your build environment visit
6 | # http://www.gradle.org/docs/current/userguide/build_environment.html
7 | # Specifies the JVM arguments used for the daemon process.
8 | # The setting is particularly useful for tweaking memory settings.
9 | org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
10 | # When configured, Gradle will run in incubating parallel mode.
11 | # This option should only be used with decoupled projects. More details, visit
12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
13 | # org.gradle.parallel=true
14 | # AndroidX package structure to make it clearer which packages are bundled with the
15 | # Android operating system, and which are packaged with your app"s APK
16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn
17 | android.useAndroidX=true
18 | # Automatically convert third-party libraries to use AndroidX
19 | android.enableJetifier=true
20 | # Kotlin code style for this project: "official" or "obsolete":
21 | kotlin.code.style=official
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/app/build.gradle:
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1 | plugins {
2 | id 'com.android.application'
3 | id 'kotlin-android'
4 | }
5 |
6 | android {
7 | compileSdk 30
8 |
9 | defaultConfig {
10 | applicationId "com.adematici.androidbiometricauthentication"
11 | minSdk 23
12 | targetSdk 30
13 | versionCode 1
14 | versionName "1.0"
15 |
16 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
17 | }
18 |
19 | buildFeatures{
20 | viewBinding true
21 | }
22 | buildTypes {
23 | release {
24 | minifyEnabled false
25 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
26 | }
27 | }
28 | compileOptions {
29 | sourceCompatibility JavaVersion.VERSION_1_8
30 | targetCompatibility JavaVersion.VERSION_1_8
31 | }
32 | kotlinOptions {
33 | jvmTarget = '1.8'
34 | }
35 | }
36 |
37 | dependencies {
38 |
39 | implementation 'androidx.core:core-ktx:1.6.0'
40 | implementation 'androidx.appcompat:appcompat:1.3.1'
41 | implementation 'com.google.android.material:material:1.4.0'
42 | implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
43 | testImplementation 'junit:junit:4.+'
44 | androidTestImplementation 'androidx.test.ext:junit:1.1.3'
45 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
46 |
47 | implementation("androidx.biometric:biometric:1.2.0-alpha03")
48 | }
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/app/src/main/res/layout/activity_main.xml:
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1 |
2 |
9 |
10 |
21 |
22 |
33 |
34 |
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/app/src/main/res/layout/activity_second.xml:
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1 |
2 |
8 |
9 |
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21 |
32 |
33 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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/gradlew.bat:
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1 | @rem
2 | @rem Copyright 2015 the original author or authors.
3 | @rem
4 | @rem Licensed under the Apache License, Version 2.0 (the "License");
5 | @rem you may not use this file except in compliance with the License.
6 | @rem You may obtain a copy of the License at
7 | @rem
8 | @rem https://www.apache.org/licenses/LICENSE-2.0
9 | @rem
10 | @rem Unless required by applicable law or agreed to in writing, software
11 | @rem distributed under the License is distributed on an "AS IS" BASIS,
12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | @rem See the License for the specific language governing permissions and
14 | @rem limitations under the License.
15 | @rem
16 |
17 | @if "%DEBUG%" == "" @echo off
18 | @rem ##########################################################################
19 | @rem
20 | @rem Gradle startup script for Windows
21 | @rem
22 | @rem ##########################################################################
23 |
24 | @rem Set local scope for the variables with windows NT shell
25 | if "%OS%"=="Windows_NT" setlocal
26 |
27 | set DIRNAME=%~dp0
28 | if "%DIRNAME%" == "" set DIRNAME=.
29 | set APP_BASE_NAME=%~n0
30 | set APP_HOME=%DIRNAME%
31 |
32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter.
33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
34 |
35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
37 |
38 | @rem Find java.exe
39 | if defined JAVA_HOME goto findJavaFromJavaHome
40 |
41 | set JAVA_EXE=java.exe
42 | %JAVA_EXE% -version >NUL 2>&1
43 | if "%ERRORLEVEL%" == "0" goto execute
44 |
45 | echo.
46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
47 | echo.
48 | echo Please set the JAVA_HOME variable in your environment to match the
49 | echo location of your Java installation.
50 |
51 | goto fail
52 |
53 | :findJavaFromJavaHome
54 | set JAVA_HOME=%JAVA_HOME:"=%
55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
56 |
57 | if exist "%JAVA_EXE%" goto execute
58 |
59 | echo.
60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
61 | echo.
62 | echo Please set the JAVA_HOME variable in your environment to match the
63 | echo location of your Java installation.
64 |
65 | goto fail
66 |
67 | :execute
68 | @rem Setup the command line
69 |
70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
71 |
72 |
73 | @rem Execute Gradle
74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
75 |
76 | :end
77 | @rem End local scope for the variables with windows NT shell
78 | if "%ERRORLEVEL%"=="0" goto mainEnd
79 |
80 | :fail
81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
82 | rem the _cmd.exe /c_ return code!
83 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
84 | exit /b 1
85 |
86 | :mainEnd
87 | if "%OS%"=="Windows_NT" endlocal
88 |
89 | :omega
90 |
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/app/src/main/java/com/adematici/androidbiometricauthentication/MainActivity.kt:
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1 | package com.adematici.androidbiometricauthentication
2 |
3 | import android.content.Intent
4 | import android.os.Build
5 | import androidx.appcompat.app.AppCompatActivity
6 | import android.os.Bundle
7 | import android.provider.Settings
8 | import android.widget.Toast
9 | import androidx.annotation.RequiresApi
10 | import androidx.biometric.BiometricManager
11 | import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG
12 | import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL
13 | import androidx.biometric.BiometricPrompt
14 | import androidx.core.content.ContextCompat
15 | import com.adematici.androidbiometricauthentication.databinding.ActivityMainBinding
16 | import java.util.concurrent.Executor
17 |
18 | class MainActivity : AppCompatActivity() {
19 |
20 | private lateinit var binding: ActivityMainBinding
21 | private lateinit var executor: Executor
22 | private lateinit var biometricPrompt: BiometricPrompt
23 | private lateinit var promptInfo: BiometricPrompt.PromptInfo
24 |
25 | override fun onCreate(savedInstanceState: Bundle?) {
26 | super.onCreate(savedInstanceState)
27 | binding = ActivityMainBinding.inflate(layoutInflater)
28 | setContentView(binding.root)
29 |
30 | val biometricManager = BiometricManager.from(this)
31 | when (biometricManager.canAuthenticate(BIOMETRIC_STRONG or DEVICE_CREDENTIAL)) {
32 | BiometricManager.BIOMETRIC_SUCCESS ->
33 | notifyUser("App can authenticate using biometrics.")
34 | BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE ->
35 | notifyUser("No biometric features available on this device.")
36 | BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE ->
37 | notifyUser("Biometric features are currently unavailable.")
38 | BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED ->
39 | notifyUser("The device does not have any biometric credentials")
40 | BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED ->
41 | notifyUser("A security vulnerability has been discovered and the sensor is unavailable until a security update has addressed this issue.")
42 | BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED ->
43 | notifyUser("A given authenticator combination is not supported by the device.")
44 | BiometricManager.BIOMETRIC_STATUS_UNKNOWN ->
45 | notifyUser("The user may still be able to authenticate.")
46 | }
47 |
48 | executor = ContextCompat.getMainExecutor(this)
49 | biometricPrompt = BiometricPrompt(this, executor,
50 | object : BiometricPrompt.AuthenticationCallback() {
51 | override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
52 | super.onAuthenticationError(errorCode, errString)
53 | notifyUser(errString.toString())
54 | }
55 |
56 | override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
57 | super.onAuthenticationSucceeded(result)
58 | notifyUser("Authentication Success")
59 | startActivity(Intent(this@MainActivity,SecondActivity::class.java))
60 | }
61 |
62 | override fun onAuthenticationFailed() {
63 | super.onAuthenticationFailed()
64 | notifyUser("Authentication Failed")
65 | }
66 | })
67 |
68 | promptInfo = BiometricPrompt.PromptInfo.Builder()
69 | .setTitle("Biometric login for my app")
70 | .setSubtitle("Log in using your biometric credential")
71 | .setNegativeButtonText("Cancel")
72 | .build()
73 |
74 | binding.button.setOnClickListener {
75 | biometricPrompt.authenticate(promptInfo)
76 | }
77 |
78 | }
79 |
80 | private fun notifyUser(message: String){
81 | Toast.makeText(this,message, Toast.LENGTH_SHORT).show()
82 | }
83 |
84 | }
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/README.md:
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1 | # Biometric Authentication Fingerprint Example
2 |
3 | See the blog post of this project [here][0]
4 |
5 | -------------
6 |
7 | ## Project Presentation
8 |
9 |
10 |
11 | 1. First, let's add the Biometric library to our project.
12 | ```kotlin
13 | dependencies {
14 | implementation("androidx.biometric:biometric:1.2.0-alpha03")
15 | }
16 | ```
17 |
18 | 2. After adding our library, let's do the necessary coding for situations such as whether the device has biometric authentication or not.
19 | ```kotlin
20 | val biometricManager = BiometricManager.from(this)
21 | when (biometricManager.canAuthenticate(BIOMETRIC_STRONG or DEVICE_CREDENTIAL)) {
22 | BiometricManager.BIOMETRIC_SUCCESS ->
23 | Toast.makeText(this,"App can authenticate using biometrics.",Toast.LENGTH_SHORT).show()
24 | BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE ->
25 | Toast.makeText(this,"No biometric features available on this device.",Toast.LENGTH_SHORT).show()
26 | BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE ->
27 | Toast.makeText(this,"Biometric features are currently unavailable.",Toast.LENGTH_SHORT).show()
28 | BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED ->
29 | Toast.makeText(this,"The device does not have any biometric credentials",Toast.LENGTH_SHORT).show()
30 | BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED ->
31 | Toast.makeText(this,"A security vulnerability has been discovered and the sensor is unavailable until a security update has addressed this issue.",Toast.LENGTH_SHORT).show()
32 | BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED ->
33 | Toast.makeText(this,"A given authenticator combination is not supported by the device.",Toast.LENGTH_SHORT).show()
34 | BiometricManager.BIOMETRIC_STATUS_UNKNOWN ->
35 | Toast.makeText(this,"Unable to determine whether the user can authenticate.",Toast.LENGTH_SHORT).show()
36 | }
37 | ```
38 |
39 |
40 | 3. Now let's show the user the authentication dialog. First of all, let's create the following variables in the class.
41 | ```kotlin
42 | private lateinit var executor: Executor
43 | private lateinit var biometricPrompt: BiometricPrompt
44 | private lateinit var promptInfo: BiometricPrompt.PromptInfo
45 | ```
46 |
47 |
48 | 4. Then let's define these values in order.
49 | ```kotlin
50 | executor = ContextCompat.getMainExecutor(this)
51 | biometricPrompt = BiometricPrompt(this, executor,
52 | object : BiometricPrompt.AuthenticationCallback() {
53 | override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
54 | super.onAuthenticationError(errorCode, errString)
55 | Toast.makteText(this,errString.toString(),Toast.LENGTH_SHORT).show()
56 | }
57 |
58 | override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
59 | super.onAuthenticationSucceeded(result)
60 | Toast.makteText(this,"Authentication Success",Toast.LENGTH_SHORT).show()
61 | startActivity(Intent(this@MainActivity,SecondActivity::class.java))
62 | }
63 |
64 | override fun onAuthenticationFailed() {
65 | super.onAuthenticationFailed()
66 | Toast.makteText(this,"Authentication Failed",Toast.LENGTH_SHORT).show()
67 | }
68 | })
69 | ```
70 |
71 |
72 | 5. Now, let's define the promptInfo variable.
73 | ```ruby
74 | promptInfo = BiometricPrompt.PromptInfo.Builder()
75 | .setTitle("Biometric login for my app")
76 | .setSubtitle("Log in using your biometric credential")
77 | .setNegativeButtonText("Cancel")
78 | .build()
79 | ```
80 |
81 |
82 | 5. Finally, we use the authenticate function to show our dialog when the button is clicked and give the biometricPrompt the promptInfo.
83 | ```ruby
84 | binding.button.setOnClickListener {
85 | biometricPrompt.authenticate(promptInfo)
86 | }
87 | ```
88 |
89 |
90 | -----------
91 | ## And Result
92 |
93 |
94 |
95 |
96 |
97 | [0]: https://www.mobiler.dev/post/android-de-biyometrik-kimlik-dogrulama
98 |
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/app/src/main/res/drawable/ic_launcher_background.xml:
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/gradlew:
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1 | #!/usr/bin/env sh
2 |
3 | #
4 | # Copyright 2015 the original author or authors.
5 | #
6 | # Licensed under the Apache License, Version 2.0 (the "License");
7 | # you may not use this file except in compliance with the License.
8 | # You may obtain a copy of the License at
9 | #
10 | # https://www.apache.org/licenses/LICENSE-2.0
11 | #
12 | # Unless required by applicable law or agreed to in writing, software
13 | # distributed under the License is distributed on an "AS IS" BASIS,
14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 | # See the License for the specific language governing permissions and
16 | # limitations under the License.
17 | #
18 |
19 | ##############################################################################
20 | ##
21 | ## Gradle start up script for UN*X
22 | ##
23 | ##############################################################################
24 |
25 | # Attempt to set APP_HOME
26 | # Resolve links: $0 may be a link
27 | PRG="$0"
28 | # Need this for relative symlinks.
29 | while [ -h "$PRG" ] ; do
30 | ls=`ls -ld "$PRG"`
31 | link=`expr "$ls" : '.*-> \(.*\)$'`
32 | if expr "$link" : '/.*' > /dev/null; then
33 | PRG="$link"
34 | else
35 | PRG=`dirname "$PRG"`"/$link"
36 | fi
37 | done
38 | SAVED="`pwd`"
39 | cd "`dirname \"$PRG\"`/" >/dev/null
40 | APP_HOME="`pwd -P`"
41 | cd "$SAVED" >/dev/null
42 |
43 | APP_NAME="Gradle"
44 | APP_BASE_NAME=`basename "$0"`
45 |
46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
48 |
49 | # Use the maximum available, or set MAX_FD != -1 to use that value.
50 | MAX_FD="maximum"
51 |
52 | warn () {
53 | echo "$*"
54 | }
55 |
56 | die () {
57 | echo
58 | echo "$*"
59 | echo
60 | exit 1
61 | }
62 |
63 | # OS specific support (must be 'true' or 'false').
64 | cygwin=false
65 | msys=false
66 | darwin=false
67 | nonstop=false
68 | case "`uname`" in
69 | CYGWIN* )
70 | cygwin=true
71 | ;;
72 | Darwin* )
73 | darwin=true
74 | ;;
75 | MINGW* )
76 | msys=true
77 | ;;
78 | NONSTOP* )
79 | nonstop=true
80 | ;;
81 | esac
82 |
83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
84 |
85 |
86 | # Determine the Java command to use to start the JVM.
87 | if [ -n "$JAVA_HOME" ] ; then
88 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
89 | # IBM's JDK on AIX uses strange locations for the executables
90 | JAVACMD="$JAVA_HOME/jre/sh/java"
91 | else
92 | JAVACMD="$JAVA_HOME/bin/java"
93 | fi
94 | if [ ! -x "$JAVACMD" ] ; then
95 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
96 |
97 | Please set the JAVA_HOME variable in your environment to match the
98 | location of your Java installation."
99 | fi
100 | else
101 | JAVACMD="java"
102 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
103 |
104 | Please set the JAVA_HOME variable in your environment to match the
105 | location of your Java installation."
106 | fi
107 |
108 | # Increase the maximum file descriptors if we can.
109 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
110 | MAX_FD_LIMIT=`ulimit -H -n`
111 | if [ $? -eq 0 ] ; then
112 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
113 | MAX_FD="$MAX_FD_LIMIT"
114 | fi
115 | ulimit -n $MAX_FD
116 | if [ $? -ne 0 ] ; then
117 | warn "Could not set maximum file descriptor limit: $MAX_FD"
118 | fi
119 | else
120 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
121 | fi
122 | fi
123 |
124 | # For Darwin, add options to specify how the application appears in the dock
125 | if $darwin; then
126 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
127 | fi
128 |
129 | # For Cygwin or MSYS, switch paths to Windows format before running java
130 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
131 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
132 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
133 |
134 | JAVACMD=`cygpath --unix "$JAVACMD"`
135 |
136 | # We build the pattern for arguments to be converted via cygpath
137 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
138 | SEP=""
139 | for dir in $ROOTDIRSRAW ; do
140 | ROOTDIRS="$ROOTDIRS$SEP$dir"
141 | SEP="|"
142 | done
143 | OURCYGPATTERN="(^($ROOTDIRS))"
144 | # Add a user-defined pattern to the cygpath arguments
145 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
146 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
147 | fi
148 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
149 | i=0
150 | for arg in "$@" ; do
151 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
152 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
153 |
154 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
155 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
156 | else
157 | eval `echo args$i`="\"$arg\""
158 | fi
159 | i=`expr $i + 1`
160 | done
161 | case $i in
162 | 0) set -- ;;
163 | 1) set -- "$args0" ;;
164 | 2) set -- "$args0" "$args1" ;;
165 | 3) set -- "$args0" "$args1" "$args2" ;;
166 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;;
167 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
168 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
169 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
170 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
171 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
172 | esac
173 | fi
174 |
175 | # Escape application args
176 | save () {
177 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
178 | echo " "
179 | }
180 | APP_ARGS=`save "$@"`
181 |
182 | # Collect all arguments for the java command, following the shell quoting and substitution rules
183 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
184 |
185 | exec "$JAVACMD" "$@"
186 |
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