How to detect fingerprint hardware in android 11

Question

How to detect that the phone has fingerprint hardware or not. I want a code that detects the fingerprint hardware.

I used this code but this code is showing an error on "isHardwareDetected()" this method.

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 //Fingerprint API only available on from Android 6.0 (M)
 FingerprintManager fingerprintManager = (FingerprintManager) context.getSystemService(Context.FINGERPRINT_SERVICE);
 if (!fingerprintManager.isHardwareDetected()) { 
 // Device doesn't support fingerprint authentication 
 } else if (!fingerprintManager.hasEnrolledFingerprints()) { 
 // User hasn't enrolled any fingerprints to authenticate with 
 } else { 
 // Everything is ready for fingerprint authentication 
 }
}

• atyc: FingerprintManager was deprecated in API level 28, use BiometricPrompt and BiometricManager instead
• atyc: or use AndroidX Biometric Library

Answer 1

I made a minor change in the question code and now it is working fine.

But that class "FingerprintManagerCompat" is deprecated

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 val manager = FingerprintManagerCompat.from(this)
 if (!manager.isHardwareDetected) {
 Log.e("tag","Fingerprint hardware not detected.")
 } else if (!manager.hasEnrolledFingerprints()) {
 Log.e("tag","No fingerprint is set")
 } else {
 Log.e("tag","Fingerprint is set")
 }
 }

• Mehran Khan: This is useful but please mention the alternative for the deprecated class.
• Ghayas: Soon I'll update this answer with the alternative classes

Answer 2

Add the following code inside AndroidManifest.xml :

<uses-feature android:name="android.hardware.fingerprint" android:required="true" />
<uses-permission android:name="android.permission.USE_FINGERPRINT" />

Use this where you require to detect the hardware:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 keyguardManager = (KeyguardManager) getSystemService(KEYGUARD_SERVICE);
 fingerprintManager = (FingerprintManager) getSystemService(FINGERPRINT_SERVICE);
 
 if (!fingerprintManager.isHardwareDetected()) {
 Toast.makeText(getApplicationContext(), "Your device doesn't support fingerprint authentication", Toast.LENGTH_SHORT).show();
 }
 if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
 Toast.makeText(getApplicationContext(), "Please enable the fingerprint permission", Toast.LENGTH_SHORT).show();
 
 ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.USE_FINGERPRINT}, FingerprintHandler.FINGERPRINT_PERMISSION);
 
 }
 
 if (!fingerprintManager.hasEnrolledFingerprints()) {
 Toast.makeText(getApplicationContext(), "Your Device has no registered Fingerprints! Please register atleast one in your Device settings", Toast.LENGTH_LONG).show();
 }
}