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");
}
}
};
}