OS X上的Cocoa的NSPageController教程

Question

我需要在某些項目中使用NSPageController，但我不知道它是如何工作的，有沒有人有時間給我一些簡單的教程來顯示我，因爲文檔沒有幫助我。

忘了提：我的工作Mac project（不iOS）

Answer 1

簡單NSPageController書模式教程

新建Cocoa應用程序 - 項目。在界面構建器中打開MainMenu.xib，並將圖片加入和標籤對象到您的應用程序窗口。還要添加頁面控制器對象。

集頁面控制器的以點形象嘛。

---

一些圖像添加到Images.xcassets

我以前在此示例項目三幅影像：

• first.png
• second.png
• 第三。 png

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MyAppDelegate.h

添加引用網點頁面控制器，標籤和形象嘛。將MyAppDelegate設置爲NSPageControllerDelegate，併爲圖像添加NSArray。在此之後您MyAppDelegate.h文件應該是這樣的：

@interface MyAppDelegate : NSObject <NSApplicationDelegate, NSPageControllerDelegate> 

@property (assign) IBOutlet NSWindow *window; 
@property (unsafe_unretained) IBOutlet NSPageController *pageController; 
@property (weak) IBOutlet NSImageView *imageView; 
@property (weak) IBOutlet NSTextField *infoLabel; 

@property (nonatomic) NSArray *imageArray; 

@end 

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MyAppDelegate。米

一些初始化：

- (void)awakeFromNib { 
    _imageArray = @[ [NSImage imageNamed:@"first"], 
        [NSImage imageNamed:@"second"], 
        [NSImage imageNamed:@"third"]]; 

    /* Set delegate for NSPageControl */ 
    [_pageController setDelegate:self]; 
    /* Set arranged objects for NSPageControl */ 
    [_pageController setArrangedObjects:_imageArray]; 
    /* Set transition style, in this example we use book style */ 
    [_pageController setTransitionStyle:NSPageControllerTransitionStyleStackBook]; 

    /* Set info label's text */ 
    NSString *info = [NSString stringWithFormat:@"Image %ld/%ld", ([_pageController selectedIndex]+1), [_imageArray count]]; 
    [_infoLabel setStringValue:info]; 
} 

頁控制器的委託方法：

- (void)pageController:(NSPageController *)pageController didTransitionToObject:(id)object { 
    /* When image is changed, update info label's text */ 
    NSString *info = [NSString stringWithFormat:@"Image %ld/%ld", ([_pageController selectedIndex]+1), [_imageArray count]]; 
    [_infoLabel setStringValue:info]; 
} 

- (NSString *)pageController:(NSPageController *)pageController identifierForObject:(id)object { 
    /* Returns object's array index as identiefier */ 
    NSString *identifier = [[NSNumber numberWithInteger:[_imageArray indexOfObject:object]] stringValue]; 
    return identifier; 
} 

- (NSViewController *)pageController:(NSPageController *)pageController viewControllerForIdentifier:(NSString *)identifier { 
    /* Create new view controller and image view */ 
    NSViewController *vController = [NSViewController new]; 
    NSImageView *iView = [[NSImageView alloc] initWithFrame:[_imageView frame]]; 

    /* Get image from image array using identiefier and set image to view */ 
    [iView setImage:(NSImage *)[_imageArray objectAtIndex:[identifier integerValue]]]; 
    /* Set image view's frame style to none */ 
    [iView setImageFrameStyle:NSImageFrameNone]; 

    /* Add image view to view controller and return view controller */ 
    [vController setView:iView]; 
    return vController; 
} 

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它完成

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如果您_pageController是零/零

按ctrl和MyAppDelegate.h文件用鼠標拖動到_pageController連接你的頁面控制器用來_pageController。