我使用自己像" self = [super init];",以下代码给我一个错误" cannot assign to self out of a method in the init family"
- (id)showDropDown:(UIButton *)b:(CGFloat *)height:(NSArray *)arr:(NSString *)direction {
btnSender = b;
animationDirection = direction;
self = [super init];
if (self) {
// Initialization code
CGRect btn = b.frame;
self.list = [NSArray arrayWithArray:arr];
if ([direction isEqualToString:@"up"]) {
self.frame = CGRectMake(btn.origin.x, btn.origin.y, btn.size.width, 0);
self.layer.shadowOffset = CGSizeMake(-5, -5);
}else if ([direction isEqualToString:@"down"]) {
self.frame = CGRectMake(btn.origin.x, btn.origin.y+btn.size.height, btn.size.width, 0);
self.layer.shadowOffset = CGSizeMake(-5, 5);
} …我是ruby on rails的新手,我想从指定的目录中读取文件名.任何人都可以建议代码或任何其他链接？
谢谢
我是IOS的新开发者,我需要帮助,如何在xcode中创建下拉框,任何一个提供我在下拉列表中创建国家/地区列表的示例？
我更新了我的xcode使用6.1模拟器,我的应用程序工作正常的5.1模拟器,
现在我收到以下错误:
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UITableViewController loadView] loaded the "MySubscriptionsViewController" nib but didn't get a UITableView.'
我的头文件:
#import <UIKit/UIKit.h>
@interface MySubscriptionsViewController : UITableViewController{
}
@property (nonatomic,retain) NSString *serverAddress;
@property (nonatomic, retain) UITextField *airportField;
@property (nonatomic, retain) NSMutableArray *airportList;
@property (nonatomic, retain) NSMutableArray *colCode;
@property (nonatomic, retain) NSMutableArray *colAirport;
@property (nonatomic, retain) NSMutableArray *colStartDate;
@property (nonatomic, retain) NSMutableArray *colStartTime;
@property (nonatomic, retain) NSMutableArray *colEndTime;
@property (nonatomic, retain) NSMutableDictionary *tempAirport;
@property (nonatomic,strong) NSDictionary *countryList;
@property …我希望将打开的连接文件分开并重新使用在.cs文件中的不同位置.我不想重写以下代码:
using (SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["connection"].ToString()));
是否有可能在c#中,如php include files include("opendb.php").