先添加权限
工具类
import android.app.KeyguardManager; import android.support.v4.hardware.fingerprint.FingerprintManagerCompat; import android.support.v4.os.CancellationSignal; public class FingerprintUtil { private static CancellationSignal cancellationSignal; public static void callFingerPrint(final OnCallBackListener listener) { FingerprintManagerCompat managerCompat = FingerprintManagerCompat.from(MyApplication.context); if (!managerCompat.isHardwareDetected()) { //判断设备是否支持 if (listener != null) listener.onSupportFailed(); return; } KeyguardManager keyguardManager = (KeyguardManager) MyApplication.context.getSystemService(MyApplication.context.KEYGUARD_SERVICE); if (!keyguardManager.isKeyguardSecure()) {//判断设备是否处于安全保护中 if (listener != null) listener.onInsecurity(); return; } if (!managerCompat.hasEnrolledFingerprints()) { //判断设备是否已经注册过指纹 if (listener != null) listener.onEnrollFailed(); //未注册 return; } if (listener != null) listener.onAuthenticationStart(); //开始指纹识别 cancellationSignal = new CancellationSignal(); //必须重新实例化，否则cancel 过一次就不能再使用了 managerCompat.authenticate(null, 0, cancellationSignal, new FingerprintManagerCompat.AuthenticationCallback() { // 当出现错误的时候回调此函数，比如多次尝试都失败了的时候，errString是错误信息，比如华为的提示就是：尝试次数过多，请稍后再试。 @Override public void onAuthenticationError(int errMsgId, CharSequence errString) { if (listener != null) listener.onAuthenticationError(errMsgId, errString); } // 当指纹验证失败的时候会回调此函数，失败之后允许多次尝试，失败次数过多会停止响应一段时间然后再停止sensor的工作 @Override public void onAuthenticationFailed() { if (listener != null) listener.onAuthenticationFailed(); } @Override public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) { if (listener != null) listener.onAuthenticationHelp(helpMsgId, helpString); } // 当验证的指纹成功时会回调此函数，然后不再监听指纹sensor @Override public void onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result) { if (listener != null) listener.onAuthenticationSucceeded(result); } }, null); } public static void cancel() { if (cancellationSignal != null) cancellationSignal.cancel(); } interface OnCallBackListener { void onSupportFailed(); void onInsecurity(); void onEnrollFailed(); void onAuthenticationStart(); void onAuthenticationError(int errMsgId, CharSequence errString); void onAuthenticationFailed(); void onAuthenticationHelp(int helpMsgId, CharSequence helpString); void onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result); } }
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