当滚动UIScrollView时,我一直在努力让我的UIImageView改变它的图像,有点像Photos.app。
这是我的代码:
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
if (scrollView.contentOffset.x > 296){
self.currentDBNum++;
self.currentDoorbell = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[[self.doorbells objectAtIndex:currentDBNum] objectForKey:@"Image"] ofType:@"jpg"]];
self.doorbellPic.image = currentDoorbell;
self.currentSoundPath = [[NSBundle mainBundle] pathForResource:[[doorbells objectAtIndex:currentDBNum] objectForKey:@"Sound"] ofType:@"caf"];
}
}
任何提示?谢谢。 (图像的宽度为296。)
答案 0 :(得分:2)
有两种方法可以完成您的任务:
答案 1 :(得分:2)
Antohny,
我没有自己的源代码,但我建议您使用以下链接: http://github.com/andreyvit/ScrollingMadness
我认为它会给你一个想法,所以你可以实现它而不会碰到角落。
答案 2 :(得分:0)
您可以使用以下代码执行此操作:
UIImageView *tempImageView ;
int initialXPos = 0;
int initialYPos = 30;
view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 800)];
int arraycounter=0;
for (int i=0; i<numrows; i++)
{
for (int j=0; j<numImagesPerColumn; j++)
{
NSURL *url=[NSURL URLWithString:[aPhoto.childphotos objectAtIndex:arraycounter]];
UIImage *image1;
CGRect image1Frame;
image1 = [UIImage imageWithData:[NSData dataWithContentsOfURL:url]];
image1Frame = CGRectMake(initialXPos,initialYPos, 80, 80);
tempImageView = [[UIImageView alloc] initWithFrame:image1Frame];
tempImageView.image=image1;
tempImageView.tag = 0;
initialXPos = initialXPos + 80 + 4;
[view addSubview:tempImageView];
arraycounter=arraycounter+1;
}
initialXPos=0;
initialYPos = initialYPos + 86;
}
scrollView.maximumZoomScale = 4.0;
scrollView.minimumZoomScale = 0.75;
scrollView.clipsToBounds = YES;
scrollView.delegate = self;
[scrollView addSubview:view];
[scrollView addSubview:title];
[scrollView addSubview:des];
[self.view addSubview:scrollView ];
答案 3 :(得分:0)
你试试这个
-(void)getButtonRowSize:(int)_rowsize Count:(int)_count
{
[scrollView setFrame:CGRectMake(0, 0, 320, 480)];
[scrollView setContentSize:CGSizeMake(320,((320-_rowsize*IMAGEGAP)/_rowsize)*(_count/_rowsize +1)+(_count/_rowsize)*IMAGEGAP)];
for(int i=0;i<_count;i++)
{
[scrollView addSubview:[self getButtonRowSize:_rowsize Count:_count currentPos:i]];
}
}
-(UIButton *)getButtonRowSize:(int)_rowsize Count:(int)_count currentPos:(int)_pos
{
UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake((_pos%_rowsize)*((320-(_rowsize+1)*IMAGEGAP)/_rowsize)+(_pos%_rowsize +1)*IMAGEGAP,(_pos/_rowsize)*((320-(_rowsize+1)*IMAGEGAP)/_rowsize)+(_pos/_rowsize +1)*IMAGEGAP,((320-(_rowsize+1)*IMAGEGAP)/_rowsize),((320-(_rowsize+1)*IMAGEGAP)/_rowsize))];
[button setBackgroundImage:[self resizingImagewithimagename:[UIImage imageNamed:@"add image file name"] Length:((320-(_rowsize+1)*IMAGEGAP)/_rowsize)] forState:UIControlStateNormal];
return button;
}