How to load URL on launch in a WebView (OSX project)?

Question

I am just starting to develop mac apps and I want that the WebView a URL when the app start.Here's my code:

AppDelegate.h

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

@interface AppDelegate : NSObject <NSApplicationDelegate> {
     WebView *myWebView;
    //other instance variables
}

@property

(retain, nonatomic) IBOutlet WebView *myWebView;

//other properties and methods

@end

AppDelegate.m:

 #import "AppDelegate.h"
#import <WebKit/WebKit.h>

@implementation AppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    NSString *urlText = @"http://google.com";
    [[self.myWebView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlText]]];
    return;
    // Insert code here to initialize your application
}

@end

How to load URL on launch in a WebView (OSX project)?

I think that the code work but when I try to connect the code with the WebView in Interface Builder,I can't find the "web view" in the list of outlets. Thanks I'have update my code following the last post but is still doesn't work. Thanks again for you replies.

Answer 1

You need to add WebKit framework.

#import <WebKit/WebKit.h>

Answer 2

Hard to be sure what the issue is here, so a guess...

Which way are you dragging the connection in IB?

To connect your outlet you want to drag from the outlet shown in the Inspector to the web view:

If you drag in the other way, from the web view to the App Delegate in the outline you are trying to connect an action.

You also have an issue in your code, your instance variable:

@interface AppDelegate : NSObject <NSApplicationDelegate>
{
   WebView *myWebView;
   //other instance variables
}

will not be used by your property:

@property (retain, nonatomic) IBOutlet WebView *myWebView;

as your property is automatically synthesised and so will create an instance variable _myWebView. You should see a compiler warning to this effect.

This in turn means the statement:

[[myWebView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlText]]];

will not do what you expect, as myWebView will be nil and not refer to your WebView. You should refer to the property as self.myWebView:

[[self.myWebView mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlText]]];

With those changes you should see Google in your web view.

HTH