大家.
我有一些标签,我在xib文件中绘制它们,并使用代码添加背景视图,但背景视图位于这些标签的前面,所以我无法看到它们.所以,我的问题是如何在这些标签下面添加背景视图.
先感谢您.
我有一个viewcontroller,它实现了UITabbarViewController,我想隐藏标签栏并自己覆盖它,
self.tabBar.hidden = YES;
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标签栏消失但是视图底部有一个空白区域(蓝色区域).我不想要空白区域,我该如何解决这个问题?谢谢.
编辑:蓝色区域是:
self.view.backgroundColor = [UIColor blueColor];
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如果我将tableview框架更改为
(0.0, 0.0, 320.0, [UIScreen mainScreen].bounds.size.height -49.0)
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滚动条会留下空白,我不喜欢它.我怎么能解决这个问题?
非常感谢你.
NSString就像"1000.00"和"1008977.72",
如何将它们格式化为"1,000.00"和"1,008,977.00"
这是我的问题,请帮助我,提前谢谢你.
我添加此函数以在应用程序进入前台时发布通知:
- (void)applicationWillEnterForeground:(UIApplication *)application
{
[[NSNotificationCenter defaultCenter] postNotificationName: @"UIApplicationWillEnterForegroundNotification" object: nil];
}
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在我自己的班上:
- (void) handleEnterForeground: (NSNotification*) sender
{
[self reloadTableData];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver: self
selector: @selector(handleEnterForeground:)
name: @"UIApplicationWillEnterForegroundNotification"
object: nil];
}
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但是handleEnterForeground:函数会调用两次,我不知道为什么.reloadTableData:函数将调用远程webService,因此当应用程序进入前台时,它会停留一段时间.

蓝线是imageview的界限.
UIImageView的contentMode是UIViewContentModeScaleAspectFit,我要保留原始图像的规模.如何让图片的左边缘位于UIImageView左边缘?但不喜欢UIViewContentModeTopLeft模式.保持比例,左边没有空白.我的英语不好,希望你们能理解我在说什么.非常感谢你.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
HeadViewController *headViewController = [[HeadViewController alloc] initWithNibName:@"HeadViewController" bundle:nil];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 120)];
[view addSubview:headViewController.vew];
[self.view addSubview:view];
}
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HeadViewController.h:
@interface HeadViewController : UIViewController
{
IBOutlet UIView *view;
}
@property (nonatomic, retain)IBOutlet UIView *view;
@end
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然后我将视图连接到文件的所有者.
我看不到headViewController.view.
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *TodoListTableIdentifier = @"TodoListTableIdentifier";
TodoTableViewCellController *cell = (TodoTableViewCellController *)[tableView dequeueReusableCellWithIdentifier:TodoListTableIdentifier];
if ( cell == nil )
{
NSArray *nib=[[NSBundle mainBundle] loadNibNamed:@"TodoTableViewCellController" owner:self options:nil];
cell=[nib objectAtIndex:0];
[cell setSelectionStyle:UITableViewCellSelectionStyleGray];
}
Todo *todo = [self.allTodoArray objectAtIndex:[indexPath row]];
cell.titleLabel.text = todo.fileTitle;
cell.money.text = [NSString stringWithFormat:@"Monei:%f",todo.amount];
cell.name.text = todo.realName;
cell.date.text = todo.operateTime;
return cell;
}
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在跑步时:
NSArray *nib=[[NSBundle mainBundle] loadNibNamed:@"TodoTableViewCellController" owner:self options:nil];
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并且有一个例外: *由于未捕获的异常'NSUnknownKeyException'而终止应用程序,原因:'[setValue:forUndefinedKey:]:此类不是关键日期的密钥值编码兼容.
我不知道为什么会发生,所以请帮助我,提前谢谢你!
球员:
测试应用程序的viewController中有两个按钮,右边一个我称之为"NO",
另一个是"是".这两个按钮将调用两个不同的功能,以及何时
用户按下其中一个按钮,我想向用户显示一个警告以确认.
我知道使用UIAlertViewDelegate
- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
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但有两个按钮,我很困惑.我怎么知道按下了哪个按钮.
所以,请帮助我,提前谢谢你!
[Allocator] Mapping failed %d
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
[Allocator] Allocator invalid, falling back to malloc
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