如何使用UITouches移动CGRect? [英] How can I move CGRect with UITouches?

问题描述

如何使用uitouches移动CGRect?如果有人有想法请解释.

How can I move CGRect with uitouches? If anyone has idea please explain.

if(areaSelected)
        return;
    UITouch *mytouch=[[touches allObjects] objectAtIndex:0];
    [myPath addLineToPoint:[mytouch locationInView:self]];

[self setNeedsDisplay];

推荐答案

您好，根据我的理解，您需要将裁剪后的图像移动到另一个位置，以便在触摸内容中进行编码...

Hi as per my understanding you need to move the cropped image to one place to other place so you need to code it in the touches stuff...

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint location = [touch locationInView:touch.view];
    cloud.center = location;
}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    [self touchesBegan:touches withEvent:event];
}

这里的云是UIImageView，您可以将其作为裁剪后的图像....

Here cloud is the UIImageView you can make it as cropped image ....

 cloud.image=croppedImage;   //[you must assign this first...]

我希望它可以帮助您...

i hope it helps you...

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