Question

我发现我的代码出现问题时遇到了一些麻烦，因为我试图从不同的网址下载多个图片，而且请求总是失败。

你们可以给我一些帮助吗？

这是我的代码：

//
//  Chapters.h 
// 
//
//  Created by Nuno Martins on 11/07/18.
//  Copyright 2011 WeTouch. All rights reserved.
//

#import <Foundation/Foundation.h>
//#import <GHUnit/GHUnit.h>
@class ASINetworkQueue;


@interface Chapters : NSObject {

NSString * chaptersBaseUrl;
NSMutableArray * chaptersList; 



ASINetworkQueue *networkQueue;


}


@property (retain) ASINetworkQueue *networkQueue;

@property (nonatomic, retain) NSString *chaptersBaseUrl;
@property (nonatomic, retain) NSMutableArray *chaptersList;



-(void)downloadChaptersIconsFromUrlArrayToFile:(NSMutableArray *)iconUrls;


@end


//
//  Chapters.m
// 
//
//  Created by Nuno Martins on 11/07/18.
//  Copyright 2011 WeTouch. All rights reserved.
//

#import "Chapters.h"
#import "Chapter.h"
#import "PDFDataAgregator.h"
#import "ASIHTTPRequest.h"
#import "ASINetworkQueue.h"

@implementation Chapters

@synthesize chaptersBaseUrl;
@synthesize chaptersList;

@synthesize networkQueue;


- (void)dealloc
{
 [networkQueue release];
 [super dealloc];
}

-(void)downloadChaptersIconsFromUrlArrayToFile:(NSMutableArray *)iconUrls
{
    networkQueue = [[ASINetworkQueue alloc] init];
    // Stop anything already in the queue before removing it
[networkQueue cancelAllOperations];

// Creating a new queue each time we use it means we don't have to worry about clearing delegates or resetting progress tracking
[networkQueue setDelegate:self];
[networkQueue setRequestDidFinishSelector:@selector(requestFinished:)];
[networkQueue setRequestDidFailSelector:@selector(requestFailed:)];
[networkQueue setQueueDidFinishSelector:@selector(queueFinished:)];


NSLog(@"Array-> %d", [iconUrls count]);
NSMutableArray *myIcons = [[NSMutableArray alloc] initWithArray:iconUrls];



//Create Chapters Folder
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *docDirectory = [paths objectAtIndex:0];
NSString *newDir = [docDirectory stringByAppendingPathComponent:@"Chapters"];

[[NSFileManager defaultManager] createDirectoryAtPath:newDir withIntermediateDirectories:YES attributes:nil error: NULL];

for(unsigned i = 0; i < [myIcons count]; i++)
{
    NSURL *url = [NSURL URLWithString:[myIcons objectAtIndex:i]];
    NSString *fileName = [url lastPathComponent];

    NSString *filePath = [newDir stringByAppendingPathComponent:fileName];

    NSLog(@"Icon File Path: %@",filePath);


     ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:[iconUrls objectAtIndex:i]]];
    [request setDownloadDestinationPath:filePath];
    //[request setUserInfo:[NSDictionary dictionaryWithObject:@"request1" forKey:@"name"]];
        [request setTemporaryFileDownloadPath:[filePath stringByAppendingPathExtension:@"download"]];
        [request setAllowResumeForFileDownloads:YES];

        [networkQueue addOperation:request];



    }


    [networkQueue go];
}

- (void)requestFinished:(ASIHTTPRequest *)request
{
    // You could release the queue here if you wanted
    if ([networkQueue requestsCount] == 0) {

    // Since this is a retained property, setting it to nil will release it
        // This is the safest way to handle releasing things - most of the time you only ever need to release in your accessors
        // And if you an Objective-C 2.0 property for the queue (as in this example)     the accessor is generated automatically for you
        [self setNetworkQueue:nil]; 
    }

    //... Handle success
    NSLog(@"Request finished");
}

- (void)requestFailed:(ASIHTTPRequest *)request
{

    // You could release the queue here if you wanted
    NSLog(@"Number of requests in Queue %d", [networkQueue requestsCount]);

    if ([networkQueue requestsCount] == 0) {
        [self setNetworkQueue:nil]; 
    }

    //... Handle failure
    NSLog(@"Request failed");
} 


- (void)queueFinished:(ASINetworkQueue *)queue
{ 
    // You could release the queue here if you wanted
    if ([networkQueue requestsCount] == 0) {
        [self setNetworkQueue:nil]; 
    }
    NSLog(@"Queue finished");
}

Answer 1

这是与Bad url格式相关的问题。

我正在传递http：/somesite.com/someimage.png而不是传递http://somesite.com/someimage.png

我错过了/因为当我使用stringByAppending路径将一个BaseUrl字符串附加到文件名时，它会删除一个HTTP：//的斜杠。

现在解决了！

ASINetworkQueue请求总是失败 - ios

1 个答案: