iphone - 如何从 plist 中获取乌尔都语单词？

Question

我有一个包含乌尔都语单词和英语单词的 plist。如下面的屏幕截图

现在我的代码是获取数据，如下所示

- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[words removeAllObjects];
[means removeAllObjects];
NSString *path = [[NSBundle mainBundle] pathForResource:
                  @"urdutoeng" ofType:@"plist"];
NSMutableArray *array2 = [[NSMutableArray alloc] initWithContentsOfFile:path];
 for (int i=0; i<[array2 count]; i++) {
    NSDictionary* dict =  [array2 objectAtIndex:i];
        [words addObject:[dict valueForKey:@"Urdu"]];
    [means addObject:[dict valueForKey:@"English"]];
    [Types addObject:[dict valueForKey:@"Nature"]];
    }
  }

这部分代码对我来说效果很好，如下面的屏幕截图

现在的问题是，当我通过搜索栏搜索任何单词时，它会返回空结果，因为我的搜索数组包含不同格式的单词，我的搜索数组代码是

listOfItems = [[NSMutableArray alloc] init];
NSDictionary *countriesToLiveInDict = [NSDictionary dictionaryWithObject:words forKey:@"Countries"];
[listOfItems addObject:countriesToLiveInDict];
copyListOfItems = [[NSMutableArray alloc] init];

我的搜索栏代码是

#pragma mark Content Filtering
- (void)filterContentForSearchText:(NSString*)searchText
 {
[copyListOfItems removeAllObjects];
 NSLog(@"listOfItemsdata :%@",listOfItems);
for (NSString *cellLabel in [[listOfItems objectAtIndex:0] objectForKey:@"Countries"])
{
    NSComparisonResult result = [cellLabel compare:searchText options: (NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])];
    if (result == NSOrderedSame)
    {
        [copyListOfItems addObject:cellLabel];
    }
}
  }

#pragma mark UISearchDisplayController Delegate Methods
 - (BOOL)searchDisplayController:(UISearchDisplayController *)controller  shouldReloadTableForSearchString:(NSString *)searchString
{
NSLog(@"searchstring :%@",searchString);
[self filterContentForSearchText:searchString];
return YES;
}

当我记录 listOfItems 数组时，它会显示类似的文本

NSLog(@"listOfItemsdata :%@",listOfItems);

项目数据列表:( { 国家 = ( “\U0627\U0628”， “\U0627\U0628\U0628\U06be\U06cc”， “\U0627\U0628\U062a\U0628”， “\U0627\U0628\U062a\U06a9”， “\U0627\U0628\U062c\U0628\U06a9\U06c1”， “\U0627\U0628\U0633\U06d2”，它表明我的数据以其他格式存在，这就是搜索栏无法搜索它的原因。任何帮助或建议将被采纳。谢谢

Answer 1

plist 中的所有乌尔都语条目都以空格作为第一个字符。这就是搜索总是产生空列表的原因。

作为一种解决方法，可以在比较之前删除条目中的前导空格和尾随空格:

for (NSString *cellLabel in [[listOfItems objectAtIndex:0] objectForKey:@"Countries"])
{
    NSString *trimmed = [cellLabel stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    NSComparisonResult result = [trimmed compare:searchText options: (NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchText length])];
    if (result == NSOrderedSame)
    {
        [copyListOfItems addObject:cellLabel];
    }
}