android M 指纹api小示例

最新推荐文章于 2025-06-15 10:23:34 发布

weijun421122

最新推荐文章于 2025-06-15 10:23:34 发布

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分类专栏： Android

本文链接：https://blog.youkuaiyun.com/weijun421122/article/details/52064878

本文探讨了在Android M中使用指纹API的示例，主要关注于`FingerprintManager`类以及`FingerprintService.java`。通过源码分析，了解如何在应用程序中集成和管理指纹认证。

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最近有个android M 项目上加入了指纹器件，需要测试指纹的录入和解锁，看了下M 自带的api后简单的做了实现。

主要是frameworks/base/core/java/android/hardware/fingerprint下的FingerprintManager类。

还有就是/frameworks/base/services/core/java/com/android/server/fingerprint下的FingerprintService.java

源码：

package xxxx.xxx.xxxx

import android.app.Activity;
import android.view.KeyEvent;
import android.content.pm.ActivityInfo;
import android.content.Intent;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.SystemProperties;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;
import android.content.Context;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;

import android.hardware.fingerprint.Fingerprint;
import android.hardware.fingerprint.FingerprintManager;
import android.hardware.fingerprint.FingerprintManager.AuthenticationCallback;
import android.hardware.fingerprint.FingerprintManager.AuthenticationResult;
import android.hardware.fingerprint.FingerprintManager.RemovalCallback;
import android.os.CancellationSignal;
import java.util.List;
import android.os.Vibrator;

public class TestFingerPrint extends Activity implements View.OnClickListener {
    private static final String TAG = "TestFingerPrint";
    private RoundProgressBar enrollRoundPrg;//my progressbar,you can also define yours
    private boolean mEnrolling;

    private static Handler mOutHandler = null;
    private int ID = -1;
    private String mResult = null;
    private int pass = 0;
    private PowerManager.WakeLock mWakeLock;
    private boolean mbStarted = false;
    private Button mPass = null;
    private Button mFail = null;
    private Button mReset = null;
    private byte[] mToken = new byte[69];//i hate this
    private Vibrator