摘要：
如果res中某个xml文件未找到，比如layout文件夹中创建了一个add.xml，在java文件中引用时未找到的话（出现cannot be resolved or is not a field)，可以查看xml内容是否 正确。 阅读全文
摘要：
BroadcastReceiver is like a doctor in hospital, it works only when patient comes. Doctors are classfied according to their study area. Similarily, Bro... 阅读全文