real fingerprint scanner for android

(FingerprintManager manager, FingerprintManager.CryptoObject obj) { CancellationSignal signal = new CancellationSignal(); try { manager.authenticate(obj, signal, 0, this, null); } catch(SecurityException sce) {} }} There are some important methods to note. First, doAuth enables authentication. This method contains the CryptoObject object, a cancellation signal and a callback listener. The following figure shows the app response: In this case, the user completes t

throws an exception if it is. When we find these anomalies, we should treat the authentication as a failure, and we will do so for security advice. There are 2 more points to add to the above interface:1. Above we said that there would be errors or help codes in the Onauthenticationerror and Onauthenticationhelp methods to indicate why the authentication was unsuccessful. The Android system defines several bugs and help codes in the Fingerprintmana

Android barcode scanner and android barcode scanner Source code: Address 1: https://github.com/alivebao/BarCodeReader Address 2: http://download.csdn.net/detail/miaoyunzexiaobao/8297201 Reference link: Zxing Getting Started: http://www.cnblogs.com/liuan/archive/2012/01/05/2312714.html BitmapLuminanceSource class: http:

Reprint Please specify source: http://blog.csdn.net/wl9739/article/details/52444671Recent projects need to use the fingerprint recognition function, consulted the relevant information, organized into this article.Fingerprint recognition is a new feature after Android 6.0, so it is necessary to determine whether the system version of the user's phone supports fingerprint