android 指纹验证api

通过FingerPrintManager可以验证指纹的对错，实例代码：
package com.example.administrator.mywork;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.hardware.fingerprint.FingerprintManagerCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
private FingerprintManagerCompat manager;
private Context mContext = MainActivity.this;

@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    manager = FingerprintManagerCompat.from(this);    findViewById(R.id.btn_check).setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            manager.authenticate(null, 0, null, new MyCallBack(), null);        }    });}public class MyCallBack extends FingerprintManagerCompat.AuthenticationCallback {    private static final String TAG = "MyCallBack";    // 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    @Override    public void onAuthenticationError(int errMsgId, CharSequence errString) {        Log.d(TAG, "onAuthenticationError: " + errString);        Toast.makeText(mContext, "onAuthenticationError: " + errString, Toast.LENGTH_LONG).show();    }    // 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() {        Log.d(TAG, "onAuthenticationFailed: " + "验证失败");        Toast.makeText(mContext, "onAuthenticationFailed: " + "验证失败", Toast.LENGTH_LONG).show();    }    @Override    public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) {        Log.d(TAG, "onAuthenticationHelp: " + helpString);        Toast.makeText(mContext, "onAuthenticationHelp: " + helpString, Toast.LENGTH_LONG).show();    }    // 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) {        Log.d(TAG, "onAuthenticationSucceeded: " + "验证成功");        Toast.makeText(mContext, "onAuthenticationSucceeded: " + "验证成功", Toast.LENGTH_LONG).show();    }}

}

FingerPrintManager目前只能做到验证指纹对错，不能录入指纹，录入api还没开放。

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