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阵 “ - [NSMutableArray的insertObject:atIndex:]:尝试在0插入无对象”Xcode中 - 添加UIImages从RSS提要URL问题
如果我使用硬编码路径( '路径'代码)它正确地添加图像。当我从RSS提要检索相同的URL时,它不起作用(上面的错误)。
我试着用一个简单的等式检查来检查URL,它表明它们不相等,虽然它们在调试器输出中看起来如此。
任何洞察内存管理也将是有帮助的。我来自Flash的工作世界和noob到xcode(抱歉)。我知道我需要停止内存管理思想作为一种事后...
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- (void)viewDidLoad
{
[super viewDidLoad];
[self prepareGalleryLoad]; //sets up coverflow, waiting for data
NSString *xmlpath = @"http://mydomain.com/gallery3/index.php/rss/feed/gallery/album/12";
xmlreader = [[XMLReader alloc] init];
[xmlreader parseXMLFileAtURL:xmlpath];
NSMutableArray *imagearray = [[NSMutableArray alloc]init]; //array of images
NSMutableArray *imagearraycaptions = [[NSMutableArray alloc]init]; //array of captions for images
NSString *path;
NSString *pathfromrss;
UIImage *tempimage;
for (int y = 0; y < [xmlreader.stories count]; y++){
[imagearraycaptions addObject:[[xmlreader.stories objectAtIndex:y] objectForKey:@"title"]];
path = @"http://mydomain.com/gallery3/var/resizes/College-of-Nursing-and-Health-Studies/health10.jpg?m=1299713266";
pathfromrss = [NSString stringWithFormat:@"%@",[[xmlreader.stories objectAtIndex:y] objectForKey:@"link"]];
//DIAGNOSTIC check of path vs path temp.
if (path == pathfromrss){
NSLog(@"path is equal");
}else{
NSLog(@"path is not equal");
NSLog(@"%@",path);
NSLog(@"%@",pathfromrss);
}
//END DIAGNOSTIC path check
tempimage = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:path]]];
//tempimage is NIL when using "pathfromrss", works fine with "path"
if(tempimage){
[imagearray addObject:tempimage];
}
}
coverstext = imagearraycaptions; //coverflow uses this
covers = imagearray; //coverflow uses this
[self finishGalleryLoad];
}