如何检查android系统指纹认证设备的兼容性 [英] How to check device compatibility for finger print authentication in android

问题描述

我与指纹认证采用了android 6.0的API工作。
我的要求是，如果当前设备是支持指纹验证，那么我将通过其他指纹认证将采用正常方式登录该应用程序。

因此​​，任何人能告诉我，如何检查android系统指纹认证设备兼容。

先谢谢了。

解决方案

您必须在 FingerprintManager isHardwareDetected >类。

  

确定是否指纹硬件是present和功能。返回
  真，如果硬件present和功能，否则为false。

  //检查是否我们在Android 6.0（M）上运行或更高版本
如果（Build.VERSION.SDK_INT＆GT; = Build.VERSION_ codeS.M）{
    //仅适用于从6.0的Andr​​oid API指纹（M）
    FingerprintManager fingerprintManager =（FingerprintManager）context.getSystemService（Context.FINGERPRINT_SERVICE）;
    如果（！fingerprintManager.isHardwareDetected（））{
        //设备不支持指纹认证
    }否则如果（！fingerprintManager.hasEnrolledFingerprints（））{
        //用户没有登记任何指纹进行身份验证
    }其他{
        //一切都准备好了指纹认证
    }
}
 

不要忘了添加权限访问AndroidManifest指纹功能：

 ＆LT;使用许可权的android：NAME =android.permission.USE_FINGERPRINT/＆GT;
 

I am working with finger print authentication using android 6.0 api. My requirement is, if current device is supports finger print authentication, then I will go through finger print authentication else will use normal way to login the application.

So, any one can tell me, how to check device compatibility for finger print authentication in android.

Thanks in advance.

解决方案

You have to use method isHardwareDetected on FingerprintManager class.

Determine if fingerprint hardware is present and functional. Returns true if hardware is present and functional, false otherwise.

// Check if we're running on Android 6.0 (M) or higher
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 
    }
}

Don't forget to add permission to access fingerprint functions in AndroidManifest:

<uses-permission android:name="android.permission.USE_FINGERPRINT" />

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