Question

全部任何人都可以参考我，iPhone图像库源代码？任何链接，示例代码都会有很大的帮助。

我试图以缩略图显示大约70到100张图像，并且在选择任何图像时，它应该提供该图像的完整视图，我试图完成，无论iphone的图片库中是什么，我想，必须有任何示例代码。建议总是受到赞赏

问候

Answer 1

在didload方法中调用两个方法来创建滚动视图和缩略图按钮。以相同的顺序保存缩略图图像和壁纸图像数组。

-(void)createScrollView
{
scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 440)];
scrollView.pagingEnabled = YES;
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.showsVerticalScrollIndicator = NO;
scrollView.scrollsToTop = NO;
scrollView.delegate = self;
scrollView.contentSize = CGSizeMake(320 * (([imagesArray count]- 1) / 25 + 1), 440);

scrollView.backgroundColor=[UIColor blackColor];
[self.view addSubview:scrollView];

}

 -(void)createButton{
for (int i = 0; i < [imagesArray count]; i++) 
{

    thumbNailButton = [UIButton buttonWithType:UIButtonTypeCustom];
    thumbNailButton.frame = CGRectMake(6 + 62 * (i % 5) + 320 * (i / 25), 5+65 * ((i / 5) % 5), 56,56);

    img = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 56, 56)];
    [img setImage:[UIImage imageNamed:[imagesArray objectAtIndex:i]]];
    thumbNailButton.tag=i;
    [thumbNailButton addTarget:self action:@selector(imageClicked:) forControlEvents:UIControlEventTouchUpInside];   
    [thumbNailButton addSubview:img];
    [scrollView addSubview:thumbNailButton];

}

}

 -(void)imageClicked:(id)sender{
UIButton* button = (UIButton*)sender;
    AppDelegate *appDelegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];
[appDelegate setimageClickedValue:button.tag];

LargeWallPaperviewController *largeWallPaperViewController=[[LargeWallPaperviewController alloc]initWithNibName:@"LargeWallPaperviewController" bundle:nil];
[self.navigationController pushViewController:largeWallPaperViewController animated:YES];
[largeWallPaperViewController release];
}

在didload方法的largewallpaperviewcontroller类中

   [imagesArray addObjectsFromArray:[NSArray arrayWithObjects:@"wallf1.jpg",@"wallf2.jpg",@"wallf3.jpg",@"wallf4.jpg",@"wallf5.jpg",@"wallf6.jpg",@"wallf7.jpg",nil]];

scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 440)];
scrollView.pagingEnabled = YES;
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.showsVerticalScrollIndicator = NO;
scrollView.scrollsToTop = NO;
scrollView.delegate = self;
scrollView.contentSize = CGSizeMake(320 * ([imagesArray count] ), 440);
scrollView.backgroundColor = [UIColor blackColor];
[self.view addSubview:scrollView];

for (int i = 0; i < [imagesArray count]; i++) 
{

    wallPaperButton=[UIButton buttonWithType:UIButtonTypeCustom];
    wallPaperButton.tag=i;
    wallPaperButton.frame=CGRectMake((320*i),0, 320, 325);

    UIImageView *img =[ [UIImageView alloc]initWithFrame:CGRectMake(0,0, 320, 325)];

    img.image=[UIImage imageNamed:[imagesArray objectAtIndex:i]];
    img.contentMode=UIViewContentModeScaleAspectFit;            
    [wallPaperButton addSubview:img];
    [img release];


    [wallPaperButton addTarget:self action:@selector(imageSelected:) forControlEvents:UIControlEventTouchUpInside];     [scrollView addSubview:wallPaperButton];
}
appDelegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];
int imageValue=[appDelegate getimageClickedValue];
[scrollView scrollRectToVisible:CGRectMake(320*imageValue, 0, 320 , 440) animated:NO];

我在largewallpaer视图中使用了一个按钮。如果你想要删除它并直接将其添加到图像视图。这段代码对我有用，可以根据你的要求进行更改。它很容易理解。

一切顺利。

Answer 2

向这段代码致敬。这非常有效。虽然自从我使用故事板以来我修改了“appdelegate部分”。

这就是我做的事情

-(void)imageClicked:(id)sender{
     UIButton* button = (UIButton*)sender;
     imageNumber =  button.tag;
     [self performSegueWithIdentifier:@"loadImage" sender:sender];


-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
 if ([segue.identifier isEqualToString:@"loadImage"])
 {

    [segue.destinationViewController setimageValue:imageNumber];
 }
}

在名为View Controller.m的目标'ImageViewController'文件中，我实现了以下内容

 -(void)setimageValue:(int)number;
 {
     self.imageValue = number;
 }

在viewDidLoad中，我只使用

代替app委托

    [self.scrollView scrollRectToVisible:CGRectMake(320*self.imageValue, 0, 320 , 440)          animated:NO];

iPhone图片库源代码

2 个答案: