Android添加指纹解锁功能的实现代码

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

private FingerprintManagerCompat manager;

 manager = FingerprintManagerCompat.from(this);

 manager.authenticate(null, 0, null, new FingerAuthenticateCallBack(), null);

 public class FingerAuthenticateCallBack extends FingerprintManagerCompat.AuthenticationCallback {
  private static final String TAG = "FingerAuthenticateCallBack";
  // 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.e(TAG, "onAuthenticationError: " + errString);
  }
  // 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");
  }
  @Override
  public void onAuthenticationHelp(int helpMsgId, CharSequence helpString) {
   Log.e(TAG, "onAuthenticationHelp: " + helpString);
  }
  // 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.e(TAG, "onAuthenticationSucceeded: " + "验证成功");
  }
 }