使用EditText的addTextChangedListener(new TextWatcher())方法
http://www.cnblogs.com/jdsjlzx/archive/2011/07/19/2110930.html
http://www.cnblogs.com/liangge0218/archive/2013/03/26/3292382.html
我的GitHub:https://github.com/lelelongwang
http://www.cnblogs.com/jdsjlzx/archive/2011/07/19/2110930.html
http://www.cnblogs.com/liangge0218/archive/2013/03/26/3292382.html