[置顶] ios 360度旋转效果demo

demo功能：用UIimageView实现360度旋转效果。

demo说明：iPhone6.1 测试成功。主要代码在：FVImageSequence.m中。在touchesMoved事件中，通过替换UIimageView的image来产生旋转效果。

demo截屏：

demo主要代码：

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
	[super touchesMoved:touches withEvent:event];
	
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchLocation = [touch locationInView:self];
	
	int location = touchLocation.x;
//根据移动偏移量，判断旋转的方向。
	
	if(location < previous)
		current += increment;
	else
		current -= increment;
	
	previous = location;
	
//图片临界点限制，在demo中的image文件夹下有所有图片，是从不同角度拍摄的，将这些图片依次显示就可以实现360的旋转效果
	if(current > numberOfImages)
		current = 0;
	if(current < 0)
		current = numberOfImages;
	
	NSString *path = [NSString stringWithFormat:@"%@%d", prefix, current];
	NSLog(@"%@", path);
	
	path = [[NSBundle mainBundle] pathForResource:path ofType:extension];
	
	
	UIImage *img =  [[UIImage alloc] initWithContentsOfFile:path];
	
//设置UIimageView的image为新的image，实现360度旋转效果
	[self setImage:img];
	
	[img release];
}

demo下载地址： http://download.csdn.net/download/donny_zhang/5649943