小编Yog*_*esh的帖子

我是Objective-c iPhone编程的新手.我有一个应用程序,我在UIWebView中成功显示PDF,但现在我想创建我的PDF的缩略图.我的PDF存储在我的资源文件夹中.

所以请给我一些代码,说明如何显示我的PDF缩略图.我的代码用于显示PDF是按钮功能:

-(void)show:(id)sender {

    pdfView.autoresizesSubviews = NO;
    pdfView.scalesPageToFit=YES;
    pdfView.autoresizingMask=(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth);
    [pdfView setDelegate:self];

    NSString *path = [[NSBundle mainBundle] pathForResource:@"com" ofType:@"pdf"];
    NSLog(@"Path of res is%@",path);
    NSURL *url = [NSURL fileURLWithPath:path];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [pdfView loadRequest:request];
}

我在ASIFormDataRequest中苦苦挣扎.

我想在iphone上的facebook上传一张照片,以便我在编程中使用ASIFormDataRequest,但它给出了我的错误 _OBJC_CLASS_$_ASIFormDataRequest,参考:

我不明白它的含义,我该如何处理它

我上传照片的代码如下:

-(void)postphoto:(id)sender
 {
     UISegmentedControl* _segControl;    
     //ASIFormDataRequest *request;

     UIImageView *_imageView = [UIImageView alloc];// initWithImage: image];
     NSString *likeString;
     NSString *filePath = nil;
     if (_imageView.image == [UIImage imageNamed:@"angelina.jpg"]) {
         filePath = [[NSBundle mainBundle] pathForResource:@"angelina" ofType:@"jpg"];
         likeString = @"babe";
     } else if (_imageView.image == [UIImage imageNamed:@"depp.jpg"]) {
         filePath = [[NSBundle mainBundle] pathForResource:@"depp" ofType:@"jpg"];
         likeString = @"dude";
     } else if (_imageView.image == [UIImage imageNamed:@"maltese.jpg"]) {
         filePath = [[NSBundle mainBundle] pathForResource:@"maltese" ofType:@"jpg"];
         likeString = @"puppy";
     }
     if (filePath == nil) return; …