问题:

How do I create a UIImageView in code, instead of creating it in my xib file?

回答1:

UIImageView *someImageView = [[UIImageView alloc] initWithFrame:someRect];
someImageView.image = someImage;
[self.view addSubview:someImageView];

Easy as pie! :D

You might wanna check the apple docs too: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImageView_Class/Reference/Reference.html

回答2:

You can create seperately a UIImage, and create your UIImageView from your UIImage.

UIImage *myImage = [UIImage imageNamed:@"great_pic.png"];
UIImageView *myImageView = [[UIImageView alloc] initWithImage:myImage];

Then, set the size of your UIImageView

[myImageView setFrame:CGRectMake(0, 0, 100, 200)];

Do whatever you want with your image, but don't forget to release it.

[anotherView addSubview:myImageView];
[myImageView release];

回答3:

The answers so far are more complex than they need to be: initWithImage: “adjusts the frame of the receiver to match the size of the specified image.” So all you need is

UIImageView* v = [[UIImageView alloc] initWithImage: someImage];

回答4:

UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 7, 190, 23];
tabNameBackGround.image = [UIImage imageNamed:@"a.png"];
[self.view addSubview:imageView];