Android指纹识别认识和基本使用详解

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

import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v4.app.FragmentActivity;import android.support.v4.hardware.fingerprint.FingerprintManagerCompat;import android.view.View;import android.view.animation.CycleInterpolator;import android.view.animation.TranslateAnimation;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast; public class FingerActivity extends FragmentActivity { private Button mCancelBtn; private ImageView mShakeImage; private TextView mTryText; private int mCount=5; private FingerPrintUtils mFingerUtils; private TranslateAnimation mAnimation;  @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_finger);  mCancelBtn = (Button) findViewById(R.id.finger_cancel); mCancelBtn.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  finish();  } }); mTryText= (TextView) findViewById(R.id.try_text); mTryText.setText("请轻触感应器验证指纹"); mShakeImage = (ImageView) findViewById(R.id.image_finger); mAnimation=new TranslateAnimation(0,5,0,0); mAnimation.setDuration(800); mAnimation.setInterpolator(new CycleInterpolator(8)); mFingerUtils=new FingerPrintUtils(this); mFingerUtils.setFingerPrintListener(new FingerCallBack()); }   private class FingerCallBack extends FingerprintManagerCompat.AuthenticationCallback{ //多次识别失败,并且，不能短时间内调用指纹验证 @Override public void onAuthenticationError(int errMsgId, CharSequence errString) {  super.onAuthenticationError(errMsgId, errString);  if (mCount>1){  mCount--;  mTryText.setText("指纹不匹配，还可以尝试"+mCount+"次");  }else {  mTryText.setText("1分钟后可重试!");  }  mHandler.sendMessageDelayed(new Message(), 1000 * 60); }  //出错可恢复 @Override public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) {  super.onAuthenticationHelp(helpMsgId, helpString); }  //识别成功 @Override public void onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result) {  super.onAuthenticationSucceeded(result);  mFingerUtils.stopsFingerPrintListener();  finish();  Toast.makeText(FingerActivity.this, "识别成功+++", Toast.LENGTH_SHORT).show();  }  //识别失败 @Override public void onAuthenticationFailed() {  super.onAuthenticationFailed();  if (mCount>1){  mCount--;  mTryText.setText("指纹不匹配，还可以尝试"+mCount+"次");  }  mShakeImage.startAnimation(mAnimation); } }  private Handler mHandler=new Handler(){ @Override public void handleMessage(Message msg) {  super.handleMessage(msg);  if (mFingerUtils!=null){  mFingerUtils.reSetFingerPrintListener(new FingerCallBack());  }  mCount=5;  if (mTryText!=null) {  mTryText.setText("请轻触感应器验证指纹");  }  } }; }