手机开启热点 app向下移动

APP_STATUSBAR_HEIGHT=[UIApplication sharedApplication].statusBarFrame.size.height，包含热点栏（如有）高度，标准高度为20pt，当有个人热点连接时，高度为40pt。

判断 [UIApplication sharedApplication].statusBarFrame.size.height  是否等于40

([UIApplication sharedApplication].statusBarFrame.size.height==40?[UIScreen mainScreen].bounds.size.height-20:[UIScreen mainScreen].bounds.size.height)