This is the ImageRotate example . In this example we will see how to image rotate anywhere of the screen using touch.
Step 1: Create a View base application using template. Give the application name “ImageMove_iPhone”.
Step 2: Xcode automatically creates the directory structure and adds essential frameworks to it. You can explore the directory structure to check out the content of the directory.
Step 3: Xpand classes and notice Interface Builder created the ImageMove_iPhoneViewController class for you. Expand Resources and notice the template generated a separate nib,ImageMove_iPhoneViewController.xib, for the “ImageMove_iPhone”.
Step 4: We need to add UIView class in the project. Select Classes -> Add -> New File -> Cocoa Touch Class -> Objective C class -> select UIView from the Subclass of. Give the file name “ImageMove”.
Step 5: We have added one resource in the Resources folder. Give the name of the resource “11.jpg”,”feder.jpg”.
Step 6: In the ImageMove.h file, we specified the superclass as a UIImageView. So make the following changes in the file:
@interface ImageMove : UIImageView {
}
Step 7: Open the ImageMov.m file , make the following changes in the file.
if (self = [super initWithImage:image]) {
[self setUserInteractionEnabled:YES];
[self setMultipleTouchEnabled:YES];
} return self;
}
– (void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([touches count] == 1) {
CGPoint newTouch = [[touches anyObject] locationInView:[self superview]];
CGPoint lastTouch = [[touches anyObject] previousLocationInView: [self superview]];
float xDif = newTouch.x – lastTouch.x;
float yDif = newTouch.y – lastTouch.y;
CGAffineTransform translate = CGAffineTransformMakeTranslation(xDif, yDif);
[self setTransform: CGAffineTransformConcat([self transform], translate)];
}
}
Step 8: In the the ImageMove_iPhoneViewController.h file we have import “ImageMove.h” file.
Step 9: Open the mageMove_iPhoneViewController.m file, we create ImageView and make it visible. So make the following changes in the file.
[super viewDidLoad];
ImageMove* imageMove = [[ImageMove alloc] initWithImage:[UIImage imageNamed:@"11.jpg"]];
[imageMove setFrame:CGRectMake(110, 60, [imageMove frame].size.width,[imageMove frame].size.height)];
[[self view] addSubview:imageMove];
[imageMove release];
ImageMove* imageMove1 = [[ImageMove alloc] initWithImage:[UIImage imageNamed:@"feder.jpg"]];
[imageMove1 setFrame:CGRectMake(110, 200, [imageMove1 frame].size.width,[imageMove1 frame].size.height)];
[[self view] addSubview:imageMove1];
[imageMove1 release];
}
Step 10: Now compile and run the application in the Simulator.
You can Download SourceCode from here ImageMove_iPhone