摘要：
ios应运程序的五种状态即转化 从apple的官方文档扣下来的5状态：Not runningThe app has not been launched or was running but was terminated by the system.InactiveThe app is running... 阅读全文
摘要：
每一个UIApplication代表一个应运程序，而且UIApplication是个单例类；ios程序一旦启动，创建的第一个对象就是UIApplication对象； //拿到UIApplication对象 *******************UIApplication*appliction = ... 阅读全文