0

我想在可可 MAC 应用程序开发中交换视图，例如 UINavigationController 以在可可触摸中进行推送/弹出视图。它是应用程序对推送和弹出视图的要求，不知何故我可以设法做到这一点，但现在我处于项目中间，我想要可可中的 viewWillAppear 之类的东西。

4

5 回答 5

2

仅出于提供信息的目的，iOS View 生命周期方法（viewDidLoad、viewWillAppear、viewDidAppear 等）自 OSX 10.10 Yosemite（可能更高版本）起可用。

并注意：如果您计划让应用程序在 10.10 之前的 OSX 版本上运行，请不要实现这些方法，因为它们不会被早期版本识别（因此不会执行其中的代码）

于 2015-01-09T14:07:57.453 回答
1

Such a method IS NOT available on Mac. OSX UI is very different compared to iOS UI. Use -(void)loadView for initial UI update (or -(void)awakeFromNib if your UI was designed in Interface Builder and loads from a xib file) and after that make specific, on-demand UI update requests, programatically, whenever you call showWindow, makeKeyAndOrderFront, get notifications, get callbacks from delegates, etc.

于 2012-08-16T13:54:15.740 回答
1

我想出了这样的事情：

标题：

@protocol GWViewExtensions <NSObject>
- (void) viewWasAddedToSuperview;
@end

@interface GWView : NSView

//set to the view controller managing this view to get NSResponder udpates,
//and GWViewExtension protocol method calls.
@property (weak,nonatomic) IBOutlet NSViewController * viewController;

@end

执行：

#import "GWView.h"

@implementation GWView

- (void) awakeFromNib {
    [self setNeedsDisplay:TRUE];
}

- (void) addSubview:(NSView *)aView {
    [super addSubview:aView];
    if([aView isMemberOfClass:[GWView class]]) {
        GWView * gview = (GWView *)aView;
        if(gview.viewController && [gview.viewController conformsToProtocol:@protocol(GWViewExtensions)]) {
            if([gview.viewController respondsToSelector:@selector(viewWasAddedToSuperview)]) {
                [gview.viewController performSelectorOnMainThread:@selector(viewWasAddedToSuperview) withObject:nil waitUntilDone:FALSE];
            }
        }
    }
}

- (void) setViewController:(NSViewController *) newController {
    if(_viewController) {
        NSResponder *controllerNextResponder = [_viewController nextResponder];
        [super setNextResponder:controllerNextResponder];
        [_viewController setNextResponder:nil];
    }
    _viewController = newController;
    if(newController) {
        NSResponder *ownNextResponder = [self nextResponder];
        [super setNextResponder:_viewController];
        [_viewController setNextResponder:ownNextResponder];
    }
}

- (void)setNextResponder:(NSResponder *)newNextResponder {
    if(self.viewController) {
        [self.viewController setNextResponder:newNextResponder];
        return;
    }
    [super setNextResponder:newNextResponder];
}

- (void) setBackgroundColor:(NSColor *)backgroundColor {
    _backgroundColor = backgroundColor;
    [self setNeedsDisplay:TRUE];
}

- (void) drawRect:(NSRect) dirtyRect {
    [super drawRect:dirtyRect];
    if(self.backgroundColor) {
        NSGraphicsContext * theContext = [NSGraphicsContext currentContext];
        [theContext saveGraphicsState];
        [[NSGraphicsContext currentContext] setPatternPhase:NSMakePoint(0,[self frame].size.height)];
        [self.backgroundColor set];
        NSRectFill([self bounds]);
        [theContext restoreGraphicsState];
    }
}

- (void) dealloc {
    self.backgroundColor = nil;
}

@end

利用：

#import <Cocoa/Cocoa.h>
#import "GWView.h"

@interface GWDribbbleShotDetailColumn : NSViewController <GWViewExtensions>
@end


#import "GWDribbbleShotDetailColumn.h"

@interface GWDribbbleShotDetailColumn ()
@end

@implementation GWDribbbleShotDetailColumn

- (void) viewWasAddedToSuperview {
    NSRect svb = self.view.superview.bounds;
    NSRect sf = self.view.frame;
    sf.size.height = NSHeight(svb);
    sf.size.width = NSWidth(svb);
    self.view.frame = sf;
}

@end
于 2013-11-02T15:27:40.803 回答
0

我为 NSViewController 使用了一个特殊的视图，它回调视图控制器。您可以扩展代码以使用 viewWillAppear 等方法。

- (void)viewWillMoveToWindow:(NSWindow *)newWindow {
    [super viewWillMoveToWindow:newWindow];

    if (self.installed && !newWindow) {
        [self viewWillUninstall];
        NSViewController<SMControllerViewDelegate> *viewController = self.viewController;
        if (viewController) {
            @autoreleasepool {
                [viewController viewWillUninstall];
            }
        }
    }
}

- (void)viewDidMoveToWindow {
    [super viewDidMoveToWindow];

    if (!self.installed && self.window) {
        [self viewDidInstall];
        NSViewController<SMControllerViewDelegate> *viewController = self.viewController;
        if (viewController) {
            @autoreleasepool {
                [viewController viewDidInstall];
            }
        }
    }
}
于 2013-07-19T09:24:55.927 回答
-1

我已经使用 NSViewController 来更改视图，例如根据需要在按钮单击时在窗口上设置 viewController，但我发现一旦为特定的 viewController 调用 (id)init，它就再也不会为同一个 viewController 调用。出于这个原因我的用户界面（视图/MVC）没有更新。我再次强行调用（id）init，但视图不刷新。

于 2012-08-17T04:24:09.610 回答