小编use*_*067的帖子

我的应用程序正在放置一个带有自定义背景图像的按钮,我不需要它周围的边框.我不知道如何删除边框.我的代码是:

  UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    button.frame=CGRectMake(100, 170, 100,30);


    UIImage *cbutton = [UIImage imageNamed:@"pdficon_small.png"];
    [button setImage:cbutton forState:UIControlStateNormal];
    UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button2 addTarget:self 
               action:@selector(openWordings:)
     forControlEvents:UIControlEventTouchDown];   


    [button setTag:2];
    [self.view addSubview:button];

提前致谢.

当用户单击textField时,我正在使用带有弹出窗口的DatePicker.但是,Picker首先显示Month,而不是首先显示日期,并且不是英国人写日期的方式.有没有办法将DatePicker中的日期格式设置为英国方式,如dd/mm/yyyy？我正在使用Achtionsheet:

-(IBAction)acsheet:(id)sender
{

    actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                              delegate:nil
                                     cancelButtonTitle:nil
                                destructiveButtonTitle:nil
                                     otherButtonTitles:nil];
    [actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

    //CGRect pickerFrame = CGRectMake(0, 45, 0, 0);
    pickerView1 = [[UIDatePicker alloc] init];
    pickerView1.datePickerMode = UIDatePickerModeDate;  

    [actionSheet addSubview:pickerView1];

    UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
    closeButton.momentary = YES; 
    closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
    closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
    closeButton.tintColor = [UIColor blackColor];
    [closeButton addTarget:self action:@selector(dismissActionSheet:)                    
                      forControlEvents:UIControlEventValueChanged];
    [actionSheet addSubview:closeButton];
    [actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];    
    [actionSheet setBounds:CGRectMake(0, 0, 320, 485)];

    [pickerView1 addTarget:self
                    action:@selector(updateLabel:)
          forControlEvents:UIControlEventValueChanged]; 

    UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil …

我的应用程序是一个JSON代码,涉及字符串类型的日期.(如"2011-10-01").我想知道如何将其转换为NSDate？它需要以不同的时间格式显示,例如"2011年10月1日".

恩.此代码不起作用:

   NSString *date1 = @"2010-11-12";
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"yyyy-MMMM-dd"];
    NSDate *date2 = [dateFormat dateFromString:date1];
    NSString *strdate = [dateFormat stringFromDate:date2];

我正在放置UITextfield和UISwitch实例UITableView.我可检测标记和值,但不知道如何检测它们是否UISwitch还是UITextField？

我打算为每个人设置不同的行动.

我正在使用此代码来显示datePicker.单击textField时,会出现.但是,"关闭"按钮会覆盖DatePicker.你知道有什么方法可以将它降低一点吗？提前致谢.

-(IBAction)acsheet:(id)sender{

actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                          delegate:nil
                                 cancelButtonTitle:nil
                            destructiveButtonTitle:nil
                                 otherButtonTitles:nil];

[actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

//CGRect pickerFrame = CGRectMake(0, 45, 0, 0);
pickerView1 = [[UIDatePicker alloc] init];
pickerView1.datePickerMode = UIDatePickerModeDate;  



[actionSheet addSubview:pickerView1];

UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
closeButton.momentary = YES; 
closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
closeButton.tintColor = [UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventValueChanged];
[actionSheet addSubview:closeButton];
[actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];    
[actionSheet setBounds:CGRectMake(0, 0, 320, 485)];

[pickerView1 addTarget:self
             action:@selector(updateLabel:)
     forControlEvents:UIControlEventValueChanged]; 
UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; …

我正在使用xcode4和storyboard来创建一个申请表.我想添加检查按钮,发现使用NSButton是最好的方法,但我在对象库中找不到NSButton.你能告诉我怎么找到它吗？

我想在数组中的所有嵌套数组中找到重复值.目前我的阵列是这样的.

Array $bigarray = Array (
    [431] => Array (
        [0] => orange 
        [1] => apple 
        [2] => pine
    ) 
    [440] => Array ( 
        [0] => orange 
        [1] => lilly 
    ) 
    [444] => Array (  
        [0] => orange 
        [1] => pine 
    ) 
)

我想只提取orange哪一个

arrays('431','440','444').

Woudl你给我一些想法......？提前致谢.