NFC读写器，实现ST的TAG读出和写数据进去的功能-NFC reader, ST' s TAG read and write data into function

安卓Android仿蘑菇街瀑布流布局例子，将图片按指定宽度自动缩放排列下来，若对实现android瀑布流无思路的朋友，这是个不错的参考范例。代码完整，而且都带有注释，浅显易懂-St. Andrews Android imitation mushroom waterfall flow layout example, the image is automatically scaled according to the specified width arranged down, if the rea