// 设定位置和大小
CGRect frame = CGRectMake(50,340,[UIScreen mainScreen].bounds.size.width / 2,[UIScreen mainScreen].bounds.size.height / 2); CGRect frame = CGRectMake(50,34
// 设定位置和大小
CGRect frame = CGRectMake(50,340,[UIScreen mainScreen].bounds.size.width / 2,[UIScreen mainScreen].bounds.size.height / 2); CGRect frame = CGRectMake(50,34