Using imageNamed - should I avoid this?

[Obelisk]

Hi all, I'm new here!

I've been working with the SDK for a few days now, and am starting to get the grips with iPhone development (just about!). However, I have encountered a few issues that seem like hot-topics, and just wanted some clarification (if possible).

I've got three image files stored in my project that are ultimately going to be displayed inside a UIImageView (that's been set up inside a NIB using Interface Builder).

Since I'm going to change which image is used inside the view depending on a mode variable, I wanted to know if the following code is suitable?

// define an image to be used for this mode
UIImage *imgBackground = [UIImage imageNamed:@"imgBack1.png"];

// assign this image to the UIImageView
[iView setImage:imgBackground];

Now, am I correct in thinking that this particular method of assigning a variable is using a convenience method? I.e. It isn't specifically using alloc, copy or retain, and therefore doesn't need a release called upon it? Naturally, I have the

[iView release]

code in this class's dealloc method.

Is imageNamed the correct method to use to pull images from your library?

Any help would be greatly appreciated.

Thanks!

[ieasyproductions]

Originally Posted by Obelisk

Hi all, I'm new here!

I've been working with the SDK for a few days now, and am starting to get the grips with iPhone development (just about!). However, I have encountered a few issues that seem like hot-topics, and just wanted some clarification (if possible).

I've got three image files stored in my project that are ultimately going to be displayed inside a UIImageView (that's been set up inside a NIB using Interface Builder).

Since I'm going to change which image is used inside the view depending on a mode variable, I wanted to know if the following code is suitable?

// define an image to be used for this mode
UIImage *imgBackground = [UIImage imageNamed:@"imgBack1.png"];

// assign this image to the UIImageView
[iView setImage:imgBackground];

Now, am I correct in thinking that this particular method of assigning a variable is using a convenience method? I.e. It isn't specifically using alloc, copy or retain, and therefore doesn't need a release called upon it? Naturally, I have the

[iView release]

code in this class's dealloc method.

Is imageNamed the correct method to use to pull images from your library?

Any help would be greatly appreciated.

Thanks!

No you would not dealloc the image, and yes that is the appropriate call for an image in the project directory

[Obelisk]

Originally Posted by ieasyproductions

No you would not dealloc the image, and yes that is the appropriate call for an image in the project directory

That's great, many thanks for your input!