Mac OS X 使用 WebView 对象

Question

我在启动应用程序时看不到 web 视图。 在委托中这是我的代码

#import <Cocoa/Cocoa.h>
#include "NewsViewController.h"


@interface AppDelegate : NSObject <NSApplicationDelegate>

@property (assign) IBOutlet NSWindow *window;
@property (nonatomic,strong) IBOutlet NSSplitView *splitView;
@property (nonatomic,strong) IBOutlet NewsViewController *newsViewController;

@end



#import "AppDelegate.h"


@implementation AppDelegate

- (void)dealloc
{
    [super dealloc];
}

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    // Insert code here to initialize your application
    // 1. Create the master View Controller
    self.newsViewController = [[NewsViewController alloc] initWithNibName:@"NewsViewController" bundle:nil];

    // 2. Add the view controller to the Window's content view
    [self.splitView addSubview:self.newsViewController.view];

}

@end

这是我的视图控制器

#import <Cocoa/Cocoa.h>
#import <WebKit/WebKit.h> 



@interface NewsViewController : NSViewController{
    IBOutlet WebView *web;
}

@property (assign) IBOutlet WebView *web;

@end


#import "NewsViewController.h"


@interface NewsViewController ()

@end

@implementation NewsViewController
@synthesize web;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Initialization code here.
    }

    return self;
}

-(void)loadView{

    NSString *urlAddress = @"http://www.google.com/";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [[web mainFrame] loadRequest:requestObj];

}

@end

如果我在控制器中的视图上显示一个标签，一切都很好，但如果我放一个 webview，我只会看到一个灰色窗口。

为什么会这样？ 谢谢

Answer 1

我相信您需要在您的 loadView 实现中调用 [super loadView]。