如何在iPhone的相同方法上加载不同的视图

Question

头等舱

@implementation WatchViewController

- (void)viewDidLoad
{
    [super viewDidLoad];UIButton *watch1 = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
    watch1.frame = CGRectMake(5.0, 10.0, 140.0, 170.0);
    [watch1 setBackgroundImage:[UIImage imageNamed:@"Watch1.png"] forState: UIControlStateNormal];
    [watch1 addTarget:self action:@selector(WatchesPreviewButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [scr addSubview:watch1];

    UIButton *watch2 = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
    watch2.frame = CGRectMake(170.0, 10.0, 140.0, 170.0);
    [watch2 setBackgroundImage:[UIImage imageNamed:@"watch2.png"] forState: UIControlStateNormal];
    [watch2 addTarget:self action:@selector(WatchesPreviewButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [scr addSubview:watch2];
}

方法：

- (IBAction)WatchesPreviewButtonPressed:(id)sender {

    WatchPreviewViewController *watchesPreviewView = [[WatchPreviewViewController alloc] initWithNibName:@"WatchPreviewViewController"  bundle:nil];
    [self.navigationController pushViewController:watchesPreviewView animated:YES];
    [watchesPreviewView release];
}

二等舱：

@implementation WatchPreviewViewController
- (void)viewDidLoad
{
    [super viewDidLoad];
UIScrollView *scr=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 46, 320, 384)];
[self.view addSubview:scr];
NSArray* ds =[NSArray arrayWithObjects:
                      [NSArray arrayWithObjects:[self getPath:@"1a"],[self getPath:@"1b"],[self getPath:@"1c"],[self getPath:@"1d"],nil],
                      [NSArray arrayWithObjects:[self getPath:@"2a"],[self getPath:@"2b"],[self getPath:@"2c"],[self getPath:@"2d"],nil],nil];


 SSView* sv =[SSView createWithFrame:CGRectMake(0, 0, 320, 380) ds:ds];

    if(??????????????????)   //what condition is required for watch1?
{
        sv.curIndexPath =[NSIndexPath indexPathForRow:0 inSection:0];
        [scr addSubview:sv];
}
    else if(?????????????????)          //what condition is required watch2?
{
        sv.curIndexPath =[NSIndexPath indexPathForRow:1 inSection:0];
        [scr addSubview:sv];
}

在第一堂课中，我有两张手表图像，我想在点击手表时加载下一页视图。 为此，我正在使用WatchesPreviewButtonPressed方法。 在第二堂课中，我将创建用于单击按钮加载的页面。 在第二节课中，我在视图内有一个滚动视图。 而且我有图像数组。 我想在下次观看点击事件时显示不同的图像。 任何人都请我，我是iPhone开发的新手。

Answer 1

在WatchPreviewViewController中创建一个类似于样式的枚举，然后创建自己的init方法。

typedef enum WatchPreviewViewControllerStyleType {
    WatchPreviewViewControllerStyleType1 = 0,
    WatchPreviewViewControllerStyleType2 = 1
    }WatchPreviewViewControllerStyleType;

@interface WatchPreviewViewController : UIViewController
{
    WatchPreviewViewControllerStyleType style;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil andStyle:(WatchPreviewViewControllerStyleType)_style;

@implementation


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil andStyle:(WatchPreviewViewControllerStyleType)_style
{
    self.style=_style;
}

- (void)viewDidLoad
{
    [super viewDidLoad];


    if(self.style==WatchPreviewViewControllerStyleType1)   
   {

   }
    else if(self.style==WatchPreviewViewControllerStyleType2) 
   {
   }
}

在此自定义init中，设置在创建控制器时发送的ivar样式。 然后在viewDidload中检查样式类型，并添加该样式所需的视图。

并在WatchViewController中

@implementation WatchViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
  UIButton *watch1 = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
   watch1.tag=123;
    watch1.frame = CGRectMake(5.0, 10.0, 140.0, 170.0);
    [watch1 setBackgroundImage:[UIImage imageNamed:@"Watch1.png"] forState: UIControlStateNormal];
    [watch1 addTarget:self action:@selector(WatchesPreviewButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [scr addSubview:watch1];

    UIButton *watch2 = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
       watch1.tag=456;
    watch2.frame = CGRectMake(170.0, 10.0, 140.0, 170.0);
    [watch2 setBackgroundImage:[UIImage imageNamed:@"watch2.png"] forState: UIControlStateNormal];
    [watch2 addTarget:self action:@selector(WatchesPreviewButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [scr addSubview:watch2];
}

- (IBAction)WatchesPreviewButtonPressed:(id)sender {

if(sender.tag==123)
{
   WatchPreviewViewController *watchesPreviewView = [[WatchPreviewViewController alloc] initWithNibName:@"WatchPreviewViewController"  bundle:nil andStyle:WatchPreviewViewControllerStyleType1];
    [self.navigationController pushViewController:watchesPreviewView animated:YES];
    [watchesPreviewView release];
}
else
{
   WatchPreviewViewController *watchesPreviewView = [[WatchPreviewViewController alloc] initWithNibName:@"WatchPreviewViewController"  bundle:nil andStyle:WatchPreviewViewControllerStyleType2] ;
    [self.navigationController pushViewController:watchesPreviewView animated:YES];
    [watchesPreviewView release];
}

}

Answer 2

在(void)viewDidLoad创建按钮时，在每个按钮上设置tag属性：

watch1.tag = 1    //new code
[scr addSubview:watch1];  //existing code


watch2.tag = 2  //new code
[scr addSubview:watch2];  //existing code

在您的WatchPreviewViewController.h ，在@interface部分中创建一个属性：

@property (assign) int watchType;

然后在- (IBAction)WatchesPreviewButtonPressed:(id)sender根据按下的按钮设置属性：

watchesPreviewView.watchType = sender.tag

（您可能必须强制转换发件人： (UIView*)sender.tag ，我没有对此进行实时测试）

现在您的if(??????????????????)测试是if (self.watchType == 1)