Question

用户输入一些文本后，表格视图将被过滤，结果将显示在屏幕上。我正在尝试从我的plist文件中获取其余数据，如下所示：

<dict>
<key>Things to do</key>
<array>
    <dict>
        <key>activity</key>
        <string>Watch movies or TV shows</string>
        <key>keywords</key>
        <array>
            <string>tv shows</string>
            <string>movies</string>
        </array>
        <key>points</key>
        <string>10</string>
    </dict>
    <dict>
        <key>activity</key>
        <string>Go Hiking</string>
        <key>keywords</key>
        <array>
            <string>hiking</string>
            <string>mountains</string>
        </array>
        <key>points</key>
        <string>50</string>
    </dict>
    <dict>
        <key>activity</key>
        <string>Video Games</string>
        <key>keywords</key>
        <array>
            <string>video games</string>
            <string>playstation</string>
            <string>xbox</string>
            <string>nintendo</string>
        </array>
        <key>points</key>
        <string>5</string>
    </dict>
</array>
</dict>

假设用户输入“WAT”并且mutablearray searchResult包含“观看电影或电视节目”：

self.searchResults = [NSMutableArray arrayWithArray:[activityArray
  filteredArrayUsingPredicate:resultPredicate]];

将初始数据加载到NSArray * tableData中。如何在tableData中搜索匹配项并根据该匹配项获取其余信息？

if ([self.tableData containsObject:searchText]) {
   //or containsObject:self.searchResult still gives me a NO in the log
    NSLog(@"YES");
}else{
    NSLog(@"NO");
}

或类似的东西......

for (int i=0; i< [self.searchResult count]; i++){
  if ([self.searchResult objectAtIndex:i] in self.tableData){
    NSLog(@"YES");
  }
}

我关门了吗？我如何获得关键字值呢？

Answer 1

希望这个答案可以帮助某人......经过2天的网络搜索。 searchResults是一个MutableArray。我需要为每个活动遍历MutableArray和所有NSDictionaries。然后我把它插入表格单元格中：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//basic initialization of table cell
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
//if there is something written in the search area...
if (tableView == self.searchDisplayController.searchResultsTableView) {
    //use i to loop through all tableData dictionaries
    //use j to loop through how many possible matches your search found
    int i=0; int j=indexPath.row;
    while (i < [self.tableData count]) {
    //get ALL the possible dictionaries and look through them for search matches
        NSDictionary *tempDic = [self.tableData objectAtIndex:i];
        if ([[tempDic valueForKey:@"activity"] isEqualToString:self.searchResults[j]]) {
            self.points = [tempDic valueForKey:@"points"];
            break;
        }
        i++;
    }
    cell.textLabel.text = [self.searchResults objectAtIndex:indexPath.row];
    NSString *cellLabel = [[NSString alloc]initWithFormat:@"This activity is worth %@ points", self.points];
    cell.detailTextLabel.text = cellLabel;
} else {
    cell.textLabel.text = self.tableData[indexPath.row][@"activity"];
    cell.detailTextLabel.text = [[NSString alloc]initWithFormat:@"This activity is worth %@ points", self.tableData[indexPath.row][@"points"]];
}

return cell;
}

我尝试在整个代码中添加解释，我希望有人会帮助我解释，因为我从objective-c开始。真的希望这有助于某人，如果有人需要更多的帮助，我会很乐意帮助。

将mutablearray结果与原始数据进行比较以检索更多内容

1 个答案: