Question

我创建了一个pdf查看器现在我想显示目录就像索引一样，我想从该表中获取所有页面有没有任何方法或方法可以做到这一点？

-Thanx任何提前

Answer 1

虽然这是一篇非常古老的帖子，但是考虑到你可能已经解决了这个问题，我会发布这个答案，以便其他人可以解决问题。

此功能不完整但可以是一个良好的开端。 :)

CGPDFDocumentGetCatalog函数可帮助您获取目录

CGPDFDictionaryRef oldDict = CGPDFDocumentGetCatalog(pdf);
CGPDFDictionaryApplyFunction(oldDict, copyDictionaryValues, NULL);


void copyDictionaryValues (const char *key, CGPDFObjectRef object, void *info) {
  //  NSLog(@"key: %s", key);
CGPDFObjectType typeObj = CGPDFObjectGetType(object);
switch (typeObj) {
    case kCGPDFObjectTypeDictionary: {
        CGPDFDictionaryRef objectDictionary;
        if (CGPDFObjectGetValue(object, kCGPDFObjectTypeDictionary, &objectDictionary)) {
            CGPDFDictionaryApplyFunction(objectDictionary, copyDictionaryValues, NULL);
        }
    }
        break;
    case kCGPDFObjectTypeString: {
        CGPDFStringRef objectString;
        if (CGPDFObjectGetValue(object, kCGPDFObjectTypeString, &objectString)) {
            NSString *tempStr = (NSString *)CGPDFStringCopyTextString(objectString);
            [auxInfo setObject:tempStr
                                    forKey:[NSString stringWithCString:key encoding:NSUTF8StringEncoding]];
            [tempStr release];
        //    NSLog(@"set string value");
        }
    }
        break;
    case kCGPDFObjectTypeInteger: {
        CGPDFInteger objectInteger;
        if (CGPDFObjectGetValue(object, kCGPDFObjectTypeInteger, &objectInteger)) {
            [auxInfo setObject:[NSNumber numberWithInt:objectInteger]
                                    forKey:[NSString stringWithCString:key encoding:NSUTF8StringEncoding]];
       //     NSLog(@"set int value");
        }
    }
        break;
    case kCGPDFObjectTypeBoolean: {
        CGPDFBoolean objectBool;
        if (CGPDFObjectGetValue(object, kCGPDFObjectTypeBoolean, &objectBool)) {
            [auxInfo setObject:[NSNumber numberWithBool:objectBool]
                                    forKey:[NSString stringWithCString:key encoding:NSUTF8StringEncoding]];
       //     NSLog(@"set boolean value");
        }
    }
        break;
    case kCGPDFObjectTypeArray : {
        CGPDFArrayRef objectArray;
        if (CGPDFObjectGetValue(object, kCGPDFObjectTypeArray, &objectArray)) {
        //  copyPDFArray(objectArray);

           NSLog(@"set array value");
        }
    }

}
}

PDF查看器中的目录

1 个答案: