face detection
dependencies { // Java language implementation implementation "androidx.biometric:biometric:1.0.1" private Executor executor ; private BiometricPrompt biometricPrompt ; private BiometricPrompt . PromptInfo promptInfo ; @Override protected void onCreate ( Bundle savedInstanceState ) { super . onCreate ( savedInstanceState ); setContentView ( R . layout . activity_login ); executor = ContextCompat . getMainExecutor ( this ); biometricPrompt = new BiometricPrompt ( MainActivity . this , executor , new BiometricPrompt . AuthenticationCallback () { @Override public void onAuthenticationError ( int errorCode , @NonNull CharSequence errString ) { super . onAuthenticationError ( errorCode , errStr...








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