如何使用 uitouches 移动 CGRect?如果有人有想法请解释。
if(areaSelected)
return;
UITouch *mytouch=[[touches allObjects] objectAtIndex:0];
[myPath addLineToPoint:[mytouch locationInView:self]];
[self setNeedsDisplay];
最佳答案
您好,根据我的理解,您需要将裁剪后的图像从一个地方移到另一个地方,因此您需要在触摸内容中对其进行编码...
-(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 cloud 是 UIImageView,您可以将其作为裁剪后的图像....
cloud.image=croppedImage; //[you must assign this first...]
希望对你有帮助...
关于iphone - 如何使用 UITouches 移动 CGRect?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12154088/