An NFC reading and writing method based on android platform
A reading and writing method and platform technology, applied in the direction of cooperative devices, instruments, computer parts, etc., can solve the problems of demanding data writing, inconvenient reading and recognition, and inability to write in Chinese, etc., to achieve the freedom of writing high effect
Active Publication Date: 2017-10-27
ZHEJIANG UNIV OF TECH
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Problems solved by technology
[0005] In order to overcome the shortcomings of the existing NFC reading and writing methods, which are inconvenient to read and identify, and have strict requirements for writing data (the data content must be 16 bits, and cannot be in Chinese), the present invention provides a convenient reading, writing NFC reading and writing method based on Android platform with high access freedom and zero damage to NFC card memory
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[0033] The present invention will be further described below in conjunction with the accompanying drawings.
[0034] refer to Figure 1 ~ Figure 3 , a kind of NFC reading and writing method based on Android platform, comprises the following steps:
[0035] 1) Open this application to judge the device status:
[0036] 1.1) First check whether the device supports the NFC function, if not, a prompt box will pop up and exit the application;
[0037] 1.2) If the device supports this function but the NFC function is not enabled, a prompt box will appear to remind you to enable the NFC function of the device, and then proceed to the next step;
[0038] 2) Put the label close to the back of the device and wait for the program to read it;
[0039] 3) NFC card reading operation: When a tag is close, the application will prompt to find an NFC card information, then start the filter in the Android standard configuration file to find the defined application main activity Activity, the u...
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An NFC reading and writing method based on the Android platform. First, the written hexadecimal data is converted into recognizable data by using the American Standard Information Interchange Code Table, which is convenient for reading the written data for viewing; In terms of data, support for Chinese has been added, and the limitation on the length of written data has been eliminated. The byte type of data is processed by using the method of copying array elements, and 0 is added to the length less than 16 bits, and the length exceeds 16 bits. Turn and write to the next block, while skipping the tail block of the sector, and can automatically go to the next sector, so data of any length smaller than the memory of the NFC card can be written. The invention provides an NFC card reading method with convenient reading, high degree of writing freedom and zero damage to the card memory.
Description
technical field [0001] The invention relates to the fields of external data processing and computer application, in particular to an Android platform-based NFC reading and writing method. Background technique [0002] In recent years, with the rapid development of network and communication technologies, smart phones have played an increasingly important role in people's lives. According to the statistics report of the American market research company IDC, the global mobile phone shipments reached 1.167 billion in 2014. , a year-on-year increase of 25.9% over 2013, and the proportion of smartphones equipped with the Android operating system has reached 75%, ranking first in smartphone shipments. NFC (Near Filed Communication) near-field communication technology is evolved from the integration of non-contact radio frequency identification (RFID) and interconnection technology. It combines inductive card readers, inductive cards and point-to-point functions on a single chip. I...
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IPC IPC(8): G06K17/00
Inventor 张贵军龚伟奇陈铭王宇凯姚俊贺智远周晓根
Owner ZHEJIANG UNIV OF TECH