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| arguments=--init-script C\:\\Users\\asemx\\AppData\\Roaming\\TabNine\\language-servers\\bundled_java\\1.24.0\\app\\configuration\\org.eclipse.osgi\\53\\0\\.cp\\gradle\\init\\init.gradle | ||
| auto.sync=false | ||
| build.scans.enabled=false | ||
| connection.gradle.distribution=GRADLE_DISTRIBUTION(WRAPPER) | ||
| connection.project.dir= | ||
| eclipse.preferences.version=1 | ||
| gradle.user.home= | ||
| java.home=C\:/Program Files/Java/jre17 | ||
| jvm.arguments= | ||
| offline.mode=false | ||
| override.workspace.settings=true | ||
| show.console.view=true | ||
| show.executions.view=true |
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100 changes: 100 additions & 0 deletions
100
app/src/main/java/com/asemlab/samples/ui/BiometricActivity.kt
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| package com.asemlab.samples.ui | ||
|
|
||
| import android.content.Intent | ||
| import android.os.Build | ||
| import android.os.Bundle | ||
| import android.provider.Settings | ||
| import android.widget.Toast | ||
| import androidx.activity.enableEdgeToEdge | ||
| import androidx.activity.result.contract.ActivityResultContracts | ||
| import androidx.appcompat.app.AppCompatActivity | ||
| import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG | ||
| import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL | ||
| import androidx.biometric.BiometricPrompt | ||
| import androidx.core.view.ViewCompat | ||
| import androidx.core.view.WindowInsetsCompat | ||
| import androidx.databinding.DataBindingUtil | ||
| import com.asemlab.samples.R | ||
| import com.asemlab.samples.databinding.ActivityBiometricBinding | ||
| import com.asemlab.samples.utils.BiometricUtils | ||
|
|
||
| // TODO Show a biometric authentication dialog using the Biometric library | ||
| class BiometricActivity : AppCompatActivity() { | ||
|
|
||
| private lateinit var binding: ActivityBiometricBinding | ||
| private val activityResult = | ||
| registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { | ||
| if (it?.resultCode == RESULT_OK) { | ||
| Toast.makeText(this, "OK", Toast.LENGTH_SHORT).show() | ||
| } else { | ||
| Toast.makeText(this, "CANCELED", Toast.LENGTH_SHORT).show() | ||
| } | ||
| } | ||
|
|
||
| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| enableEdgeToEdge() | ||
| binding = DataBindingUtil.setContentView(this, R.layout.activity_biometric) | ||
| ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets -> | ||
| val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars()) | ||
| v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom) | ||
| insets | ||
| } | ||
|
|
||
| with(BiometricUtils) { | ||
| val callback = object : BiometricPrompt.AuthenticationCallback() { | ||
| override fun onAuthenticationError(errorCode: Int, errString: CharSequence) { | ||
| super.onAuthenticationError(errorCode, errString) | ||
| Toast.makeText( | ||
| this@BiometricActivity, | ||
| "Biometric error: $errorCode, $errString", | ||
| Toast.LENGTH_SHORT | ||
| ).show() | ||
| } | ||
|
|
||
| override fun onAuthenticationFailed() { | ||
| super.onAuthenticationFailed() | ||
| Toast.makeText(this@BiometricActivity, "Biometric failed!", Toast.LENGTH_SHORT) | ||
| .show() | ||
| } | ||
|
|
||
| override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) { | ||
| super.onAuthenticationSucceeded(result) | ||
| Toast.makeText( | ||
| this@BiometricActivity, | ||
| "Biometric Succeeded!", | ||
| Toast.LENGTH_SHORT | ||
| ).show() | ||
| } | ||
| } | ||
| initBiometricManager(this@BiometricActivity, callback) | ||
| buildPromptInfo("Login to BiometricApp", "Log in using your fingerprint or face") | ||
| } | ||
|
|
||
| with(binding) { | ||
| loginButton.setOnClickListener { | ||
| BiometricUtils.canAuthenticate(onSuccess = { | ||
| BiometricUtils.authenticate() | ||
| }, onError = { msg -> | ||
| Toast.makeText( | ||
| this@BiometricActivity, | ||
| "Biometric error: $msg", | ||
| Toast.LENGTH_SHORT | ||
| ).show() | ||
| }) { | ||
| // TODO If the user doesn't enable the biometric authentication, open sittings if supported (optional) | ||
| 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 | ||
| ) | ||
| } | ||
| activityResult.launch(enrollIntent) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
78 changes: 78 additions & 0 deletions
78
app/src/main/java/com/asemlab/samples/utils/BiometricUtils.kt
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| package com.asemlab.samples.utils | ||
|
|
||
| import android.util.Log | ||
| 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 java.util.concurrent.Executor | ||
|
|
||
| // TODO Must add the Biometric dependency | ||
| object BiometricUtils { | ||
|
|
||
| private lateinit var biometricManager: BiometricManager | ||
| private lateinit var executor: Executor | ||
| private lateinit var biometricPrompt: BiometricPrompt | ||
| private lateinit var promptInfo: BiometricPrompt.PromptInfo | ||
|
|
||
| fun initBiometricManager( | ||
| context: AppCompatActivity, | ||
| callback: BiometricPrompt.AuthenticationCallback | ||
| ) { | ||
| // TODO 1. Init the biometric manager | ||
| biometricManager = BiometricManager.from(context) | ||
| executor = ContextCompat.getMainExecutor(context) | ||
| biometricPrompt = BiometricPrompt(context, executor, callback) | ||
|
|
||
| } | ||
|
|
||
| fun buildPromptInfo( | ||
| title: String = "", | ||
| description: String = "", | ||
| negationText: String = "Cancel" | ||
| ) { | ||
| // TODO 2. Build the PromptInfo, used for set info for the dialog | ||
| promptInfo = BiometricPrompt.PromptInfo.Builder() | ||
| .setTitle(title) | ||
| .setSubtitle(description) | ||
| .setAllowedAuthenticators(BIOMETRIC_STRONG or DEVICE_CREDENTIAL) | ||
| // .setNegativeButtonText("negationText") // Apply when DEVICE_CREDENTIAL isn't enabled | ||
| .build() | ||
| } | ||
|
|
||
| fun canAuthenticate( | ||
| onSuccess: () -> Unit, | ||
| onError: (String) -> Unit, | ||
| onNotEnabled: () -> Unit | ||
| ) { | ||
| // TODO Check if biometric authentication is supported on the device (optional) | ||
| when (biometricManager.canAuthenticate(BIOMETRIC_STRONG or DEVICE_CREDENTIAL)) { | ||
| BiometricManager.BIOMETRIC_SUCCESS -> { | ||
| Log.d("BiometricUtils", "App can authenticate using biometrics.") | ||
| onSuccess() | ||
| } | ||
|
|
||
| BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> { | ||
| Log.e("BiometricUtils", "No biometric features available on this device.") | ||
| onError("No biometric features available on this device.") | ||
| } | ||
|
|
||
| BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> { | ||
| Log.e("BiometricUtils", "Biometric features are currently unavailable.") | ||
| onError("Biometric features are currently unavailable.") | ||
| } | ||
|
|
||
| BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> { | ||
| Log.e("BiometricUtils", "Biometric not enrolled") | ||
| onNotEnabled() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // TODO 3. Show the authentication dialog | ||
| fun authenticate() { | ||
| biometricPrompt.authenticate(promptInfo) | ||
| } | ||
| } |
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| @@ -0,0 +1,24 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <layout xmlns:android="http://schemas.android.com/apk/res/android" | ||
| xmlns:app="http://schemas.android.com/apk/res-auto" | ||
| xmlns:tools="http://schemas.android.com/tools"> | ||
|
|
||
| <androidx.constraintlayout.widget.ConstraintLayout | ||
| android:id="@+id/main" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="match_parent" | ||
| tools:context=".ui.BiometricActivity"> | ||
|
|
||
| <Button | ||
| android:id="@+id/loginButton" | ||
| android:layout_width="wrap_content" | ||
| android:layout_height="wrap_content" | ||
| android:padding="24dp" | ||
| android:text="Login with biometric" | ||
| app:layout_constraintBottom_toBottomOf="parent" | ||
| app:layout_constraintEnd_toEndOf="parent" | ||
| app:layout_constraintStart_toStartOf="parent" | ||
| app:layout_constraintTop_toTopOf="parent" /> | ||
|
|
||
| </androidx.constraintlayout.widget.ConstraintLayout> | ||
| </layout> |
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