1 Element type "EditText" must be followed by either attribute specifications, ">" or "/>". 解决办法:把鼠标箭头移到出错误的layout上 点击鼠标右键选择Source然后再选Format 就可以解决此问题
2 像TextView output=(TextView)findViewById(R.id.lblOutput);不能识别 lblOutput时,可能 import 改
原文:http://www.cnblogs.com/dpkgideb/p/5128641.html