ios如何使用mwphotobrowser加载本地照片。

我已经下载了一个使用mwphotobrowser的示例代码，它真的很酷。但是我在尝试使用它时遇到了问题，我希望它可以加载本地照片而不是URL。我尝试了一次又一次，但失败了…下面是代码：

#import "UIImageView+WebCache.h"
#import "MWPhotoBrowser.h"
#import "Image.h"
#import "ImageCell.h"

@interface DEMOSevenViewController () <UICollectionViewDelegate, UICollectionViewDataSource, MWPhotoBrowserDelegate>

@property (strong, nonatomic) NSMutableArray *images;
@property (strong, nonatomic) NSMutableArray *browserImages;
@property (strong, nonatomic) MWPhotoBrowser *browser;

@end

@implementation DEMOSevenViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    // Custom initialization
    }
    return self;
}    

- (void)viewDidLoad
{
[super viewDidLoad];

self.browser = [[MWPhotoBrowser alloc] initWithDelegate:self];
self.browser.displayActionButton = YES;
self.browser.displayNavArrows = YES;
self.browser.displaySelectionButtons = NO;
self.browser.zoomPhotosToFill = YES;
self.browser.alwaysShowControls = YES;
self.browser.enableGrid = NO;
self.browser.startOnGrid = NO;
self.browser.wantsFullScreenLayout = NO;

[self.browser showNextPhotoAnimated:YES];
[self.browser showPreviousPhotoAnimated:YES];

[self loadImages];
}

- (void)loadImages
{
self.images = [[NSMutableArray alloc] init];
self.browserImages = [[NSMutableArray alloc] init];

NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@", HOST_URL, @"All_Images.php"]];
NSData *jsonResults = [NSData dataWithContentsOfURL:url];
NSDictionary *results = [NSJSONSerialization JSONObjectWithData:jsonResults options:0 error:NULL];

NSDictionary *images = results[@"Images"];
for (NSDictionary *img in images) {
    Image *imageObj = [[Image alloc] init];
    imageObj.imageId = [img objectForKey:@"id"];
    imageObj.imageName = [img objectForKey:@"name"];

    // Get the full image path
    NSString *fullImagePath = [NSString stringWithFormat:@"%@%@", HOST_URL, [img objectForKey:@"full_image"]];
    imageObj.imagePath = fullImagePath;

    // Get the thumbnail image path depending on the device
    NSString *thumbnailPath;
    if (DEVICE_IS_PAD) {
        thumbnailPath = [NSString stringWithFormat:@"%@%@", HOST_URL, [img objectForKey:@"thumbnail_ipad"]];
    } else {
        thumbnailPath = [NSString stringWithFormat:@"%@%@", HOST_URL, [img objectForKey:@"thumbnail_iphone"]];
    }
    imageObj.imageThumbnail = thumbnailPath;

    // Creates an object for each image and fill it with the retrieved info
    [self.images addObject:imageObj];

    // This array stores the image paths for later use (displaying them in a photo browser)
    MWPhoto *browserImage = [MWPhoto photoWithURL:[NSURL      URLWithString:imageObj.imagePath]];
    browserImage.caption = imageObj.imageName;
    [self.browserImages addObject:browserImage];
}
[self.collectionView reloadData];
}

#pragma mark - MWPhotoBrowserDelegate
- (NSUInteger)numberOfPhotosInPhotoBrowser:(MWPhotoBrowser *)photoBrowser
{
NSLog(@"Count: %lu", (unsigned long)self.browserImages.count);
return self.browserImages.count;
//    return 93;
}

- (id <MWPhoto>)photoBrowser:(MWPhotoBrowser *)photoBrowser photoAtIndex:(NSUInteger)index
{
NSLog(@"Index: %lu", (unsigned long)index);
if (index < self.browserImages.count) {
    return self.browserImages[index];
}
return nil;
}

#pragma mark - UICollectionViewDataSource
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return self.images.count;
}

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"ImageCell";
ImageCell *cell = (ImageCell *)[collectionView     dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath];

Image *image = self.images[indexPath.row];
[cell.imageView setImageWithURL:[NSURL URLWithString:image.imageThumbnail] placeholderImage:[UIImage imageNamed:@"placeholder"]];

return cell;
}

#pragma mark - UICollectionViewDelegate
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
// Opens the image browser
//    NSLog(@"Selected Index: %ld", (long)indexPath.row);
[self.browser setCurrentPhotoIndex:indexPath.row];
[self.navigationController pushViewController:self.browser animated:YES];
}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}


@end

#导入“UIImageView+WebCache.h”
#导入“MWPhotoBrowser.h”
#导入“Image.h”
#导入“ImageCell.h”
@接口DemoSeveniewController（）
@属性（强，非原子）NSMutableArray*图像；
@属性（强，非原子）NSMutableArray*BrowserImage；
@属性（强，非原子）MWPhotoBrowser*浏览器；
@结束
@DemoSeveniewController的实现
-（id）initWithNibName:（NSString*）nibNameOrNil bundle:（NSBundle*）nibBundleOrNil
{
self=[super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]；
如果（自我）{
//自定义初始化
}
回归自我；
}    
-（无效）viewDidLoad
{
[超级视图下载]；
self.browser=[[MWPhotoBrowser alloc]initWithDelegate:self]；
self.browser.displayActionButton=是；
self.browser.displayNavArrows=是；
self.browser.displaySelectionButtons=否；
self.browser.zoomPhotosToFill=是；
self.browser.alwaysShowControls=是；
self.browser.enableGrid=否；
self.browser.startOnGrid=否；
self.browser.wantsFullScreenLayout=否；
[self.browser showNextPhotoAnimated:是]；
[self.browser showPreviousPhotoAnimated:是]；
[自动加载图像]；
}
-（void）加载图像
{
self.images=[[NSMutableArray alloc]init]；
self.browserImages=[[NSMutableArray alloc]init]；
NSURL*url=[NSURL URLWithString:[NSString stringWithFormat:@“%@%@”、主机url、@“All_Images.php”]；
NSData*jsonResults=[NSData datawithcontentsofull:url]；
NSDictionary*results=[NSJSONSerialization JSONObjectWithData:jsonResults选项：0错误：NULL]；
NSDictionary*图像=结果[@“图像”]；
用于（NSDictionary*图像中的img）{
Image*imageObj=[[Image alloc]init]；
imageObj.imageId=[img objectForKey:@“id”]；
imageObj.imageName=[img objectForKey:@“name”]；
//获取完整的图像路径
NSString*fullImagePath=[NSString stringWithFormat:@“%@%@”，主机URL，[img objectForKey:@“完整图像”]；
imageObj.imagePath=完整的imagePath；
//根据设备获取缩略图图像路径
NSString*缩略图路径；
如果（设备为焊盘）{
thumbnailPath=[NSString stringWithFormat:@“%@%@”，主机URL[img objectForKey:@“thumbnail\U ipad”]；
}否则{
thumbnailPath=[NSString stringWithFormat:@“%@%@”，主机URL，[img objectForKey:@“thumbnail\U iphone”]；
}
imageObj.imageThumbnail=缩略图路径；
//为每个图像创建一个对象，并用检索到的信息填充它
[self.images addObject:imageObj]；
//此阵列存储图像路径供以后使用（在照片浏览器中显示）
MWPhoto*browserImage=[MWPhoto photoWithURL:[NSURL URLWithString:imageObj.imagePath]]；
browserImage.caption=imageObj.imageName；
[self.browserImages addObject:browserImage]；
}
[self.collectionView-reloadData]；
}
#pragma标记-MWPhotoBrowserDelegate
-（NSInteger）numberOfPhotosInPhotoBrowser:（MWPhotoBrowser*）photoBrowser
{
NSLog（@“计数：%lu”，（无符号长）self.browserImages.Count）；
返回self.browserImages.count；
//返回93；
}
-（id）photoBrowser:（MWPhotoBrowser*）photoBrowser photoAtIndex:（NSUInteger）索引
{
NSLog（@“索引：%lu”，（无符号长）索引）；
如果（索引

---

我真的需要帮助，请帮助我。非常感谢。

打印图像路径并尝试在浏览器中打开它。

使用代理功能：

-(NSUInteger)numberOfPhotosInPhotoBrowser:(MWPhotoBrowser *)photoBrowser {
return [photoShowArray count];

-(NSUInteger)numberOfPhotosInPhotoBrowser:(MWPhotoBrowser *)photoBrowser {
return [photoShowArray count];

}

}

-（id）photoBrowser:（MWPhotoBrowser*）photoBrowser photoAtIndex:（nsInteger）索引{
返回[photoShowArray objectAtIndex:index]；

}

-（id）photoBrowser:（MWPhotoBrowser*）photoBrowser thumbPhotoAtIndex:（nsInteger）索引{
返回[thumbnailsArray对象索引：索引]；

}

并使用[MWPhoto photoWithUrl:]加载具有缓存的图像。

---

您可以使用[NSURL fileURLWithPath:path]

将本地路径转换为url，只需使用

NSURL fileURLWithPath:

创建带有本地文件路径的

NSURL

。非常感谢，请告诉我如何创建。我是一名新手。非常感谢，但我无法理解本地文件路径，这对我来说很困难。

-(id <MWPhoto>)photoBrowser:(MWPhotoBrowser *)photoBrowser photoAtIndex:(NSUInteger)index {
return [photoShowArray objectAtIndex:index];

-(id <MWPhoto>)photoBrowser:(MWPhotoBrowser *)photoBrowser thumbPhotoAtIndex:(NSUInteger)index {
return [thumbnailsArray objectAtIndex:index];