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jagatnibas
Aug 5, 2008, 06:01 AM
Hi All,

I am trying to do a simple thing on iphone simulator. I want to download an image from an url and display it. Please find my code below. I have modified the helloworld program. the image is not getting displayed. Please advise where i am going wrong. it is showing hello world as usual, and no image. If i copy paste the url in safari, it shows me the image.

regards
Jagat

_____

/*

File: HelloWorldAppDelegate.m
Abstract: Responsible for creating the view controller and adding its view to
the window.

See the ReadMe file for pointers to additional resources about iPhone
development.

Version: 1.7

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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
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*/

#import "HelloWorldAppDelegate.h"
#import "MyViewController.h"


@implementation HelloWorldAppDelegate

@synthesize window;
@synthesize myViewController;

UIImage *img;

- (void)applicationDidFinishLaunching:(UIApplication *)application {

// Set up the view controller
MyViewController *aViewController = [[MyViewController alloc] initWithNibName:@"HelloWorld" bundle:[NSBundle mainBundle]];
self.myViewController = aViewController;
[aViewController release];

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];

id path = @"http://merrimusings.mu.nu/archives/images/groundhog2.jpg";
NSURL *url = [NSURL URLWithString:path];
NSData *data = [NSData dataWithContentsOfURL:url];
/*UIImage **/img = [[UIImage alloc] initWithData:data cache:NO];

// Add the view controller's view as a subview of the window
UIView *controllersView = [myViewController view];
[window addSubview:controllersView];
[window makeKeyAndVisible];
}

- (void) drawRect:(CGRect) Rect{
[img drawAtPoint:CGPointMake(10, 10)];
}

- (void)dealloc {
[myViewController release];
[window release];
[super dealloc];
}

@end


_____



kainjow
Aug 5, 2008, 07:55 AM
drawRect: is a method of UIView, and it gets called automatically, but you're not using it in a UIView so it won't work. Use a UIImageView instead.

jagatnibas
Aug 5, 2008, 01:04 PM
Does default helloworld example use a view ? where should i have put this function then ?

if i were to use uiimageview, how would i go about it ?

sorry i am new to objectc

Jagat

jagatnibas
Aug 6, 2008, 08:38 AM
I kinda miffed with whether people knowing mac/iphone/objective C deliberately suppress information [subsequent knowledge] to themselves !

anyway,

i tried doing

- (id)initWithImage:(UIImage *)img;

basically where should have I put this line ? wont i get a fully functional uiimageview example somewhere ?

regards

Cromulent
Aug 6, 2008, 09:40 AM
I kinda miffed with whether people knowing mac/iphone/objective C deliberately suppress information [subsequent knowledge] to themselves !

Not at all. Your question seems like it is better answered by reading the freely available developer documentation available from Apple.

anyway,

i tried doing

- (id)initWithImage:(UIImage *)img;

basically where should have I put this line ? wont i get a fully functional uiimageview example somewhere ?

regards

Sounds like you could benefit from actually spending some time learning Objective-C rather than relying on tutorials.

I think this document will be of some help (http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/ObjC.pdf).

jagatnibas
Aug 7, 2008, 09:08 AM
thanks, a good reference...

http://www.youtube.com/watch?v=MdYqUD7SffQ

This looked to me a good starting point. But when i try to do file->new application i dont see a cocoa touch application !

regards
Jagat