使用生物识别 androidX 库 1.1.0 崩溃

Question

In my app, I'm using androidX biometric support library 1.1.0. On all Android versions, my app is crashing. Here is the code snippet that I have used

Exception:

java.lang.IllegalStateException: Must be called from main thread of fragment host

In:

public boolean isFingerprintAuthAvailable(Context mContext) {
        BiometricManager biometricManager = BiometricManager.from(mContext);
        if (biometricManager.canAuthenticate() == BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE) {
            return false;
        } else if (biometricManager.canAuthenticate() == BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE) {
            return false;
        } else if (biometricManager.canAuthenticate() == BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED) {
            return false;
        } else if (biometricManager.canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS) {
            return true;
        }
        return false;
    }

BiometricPrompt.PromptInfo promptInfo = new BiometricPrompt.PromptInfo.Builder()
                    .setTitle("fingerPrintTitle")
                    .setDescription("Description")
                    .setNegativeButtonText(""negative text")
                    .build();

 if (isFingerprintAuthAvailable(mContext)) {
        mBiometricPrompt.authenticate(promptInfo, cryptoObject);
 }

Answer 1

I have moved the code to UI thread

runOnUiThread(new Runnable() {
            @Override
            public void run() {
                mBiometricPrompt.authenticate(promptInfo, cryptoObject);
            }
        });