在UITableView中过滤NSMutableDictionary数据 [英] Filter NSMutableDictionary data in UITableView
本文介绍了在UITableView中过滤NSMutableDictionary数据的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要通过在 UISearchbar 中输入的文本过滤 UITableview 中的数据。我跟着这个例子，但是在 NSMutableArray 中有数据，我不能根据我的要求改变它。我的数据是 NSMutableDictionary 。
我的数据：
NSArray * documentPaths = NSSearchPathForDirectoriesInDomains（NSCachesDirectory，NSUserDomainMask，YES）;
NSString * path = [[documentPaths lastObject] stringByAppendingPathComponent：@data.plist];
NSDictionary * dict = [NSDictionary dictionaryWithContentsOfFile：path];
NSMutableDictionary * resultDic = [[NSMutableDictionary alloc] init];
NSMutableArray * resultArray = [[NSMutableArray alloc] init];
NSDictionary * myDict = [NSDictionary dictionaryWithContentsOfFile：path];
sectionKeys = [NSMutableArray new];
sectionsTitle = [NSMutableArray new];
NSArray * tableArray = [myDict objectForKey：@Black];
[resultArray addObject：@Black];
[resultDic setValue：tableArray forKey：@Black];
[sectionsTitle addObject：[NSString stringWithFormat：@％@，[tableData valueForKey：@Black]]];
[sectionCord addObject：[NSString stringWithFormat：@％@，[tableData valueForKey：@Coordinates]]];
[sectionKeys addObject：@Section1];
self.tableData = resultDic;
self.sectionsTitle = resultArray;
[myTable reloadData];
我的表：
- （NSInteger）numberOfSectionsInTableView：（UITableView *）tableView {
return sectionKeys.count;
$ b - （NSString *）tableView：（UITableView *）tableView titleForHeaderInSection：（NSInteger）section {
return [sectionKeys objectAtIndex：section];
$ b - （NSInteger）tableView：（UITableView *）tableView numberOfRowsInSection：（NSInteger）section {
int rowCount;
if（self.isFiltered）
rowCount = [[filteredTableData objectForKey：[sectionsTitle objectAtIndex：section]] count];
else
rowCount = [[tableData objectForKey：[sectionsTitle objectAtIndex：section]] count];
return rowCount; （UITableViewCell *）tableView：（UITableView *）tableView cellForRowAtIndexPath：（NSIndexPath *）indexPath {
静态NSString * CellIdentifier = @单元格 ;
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier：CellIdentifier];
if（cell == nil）
cell = [[UITableViewCell alloc] initWithStyle：UITableViewCellStyleSubtitle reuseIdentifier：CellIdentifier];
if（isFiltered）{
NSDictionary * dict = [[filteredTableData objectForKey：[sectionsTitle objectAtIndex：indexPath.section]] objectAtIndex：indexPath.row];
cell.textLabel.text = [NSString stringWithFormat：@％@，[dict objectForKey：@Name]];
cell.detailTextLabel.text = [NSString stringWithFormat：@％@，[dict objectForKey：@Address]];
else {
NSDictionary * dict = [[tableData objectForKey：[sectionsTitle objectAtIndex：indexPath.section]] objectAtIndex：indexPath.row];
cell.textLabel.text = [NSString stringWithFormat：@％@，[dict objectForKey：@Name]];
cell.detailTextLabel.text = [NSString stringWithFormat：@％@，[dict objectForKey：@Address]];
}
return cell;
$ / code> 我的搜寻：
#pragma mark - SearchBar委托 -
- （void）searchBar：（UISearchBar *）searchBar textDidChange：（NSString *）text {
if（text.length == 0）
{
isFiltered = FALSE;
NSLog（@false）;
}
else
{
isFiltered = true;
NSLog（@true）;
filteredTableData = [[NSMutableDictionary alloc] init];
$ b $ for（MyAnnotation * ann in tableData）
{
NSRange nameRange = [ann.title rangeOfString：text options：NSCaseInsensitiveSearch];
NSRange descriptionRange = [ann.description rangeOfString：text options：NSCaseInsensitiveSearch];
if（nameRange.location！= NSNotFound || descriptionRange.location！= NSNotFound）
{
[filteredTableData addObject：ann];
//错误
}
}
}
[myTable reloadData];
$ / code $ / pre
解决方案所有，你需要为控制器/数据源创建一个状态/标志，以便知道你处于搜索/过滤模式的天气。
然后，如果您可以在搜索模式下将数据源方法指向filteredArray。
$ $ $ $ $ $ $ $ $ $ $ $ - $（NSInteger）numberOfSectionsInTableView：（UITableView *）tableView {
int numberOfSections = 0;
if（_searchMode）
{
numberOfSections = self.filteredDataDict.allKeys.count;
}
else
{
numberOfSections = self.tableData.allKeys.count;
}
return numberOfSections;
$ / code> 希望能够理解。
I need to filter data in UITableview by text entered in UISearchbar. I followed this example but there data in NSMutableArray and I can't alter it under my requirements. My data is NSMutableDictionary. I'm stuck on this for long time.
My data:
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *path = [[documentPaths lastObject] stringByAppendingPathComponent:@"data.plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:path];
NSMutableDictionary *resultDic = [[NSMutableDictionary alloc] init];
NSMutableArray *resultArray = [[NSMutableArray alloc] init];
NSDictionary *myDict = [NSDictionary dictionaryWithContentsOfFile:path];
sectionKeys = [NSMutableArray new];
sectionsTitle = [NSMutableArray new];
NSArray *tableArray = [myDict objectForKey:@"Black"];
[resultArray addObject:@"Black"];
[resultDic setValue:tableArray forKey:@"Black"];
[sectionsTitle addObject:[NSString stringWithFormat:@"%@", [tableData valueForKey:@"Black"]]];
[sectionCord addObject:[NSString stringWithFormat:@"%@", [tableData valueForKey:@"Coordinates"]]];
[sectionKeys addObject:@"Section1"];
self.tableData = resultDic;
self.sectionsTitle = resultArray;
[myTable reloadData];
My table:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return sectionKeys.count;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
return [sectionKeys objectAtIndex:section];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int rowCount;
if(self.isFiltered)
rowCount = [[filteredTableData objectForKey:[sectionsTitle objectAtIndex:section]] count];
else
rowCount = [[tableData objectForKey:[sectionsTitle objectAtIndex:section]] count];
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
if(isFiltered){
NSDictionary *dict = [[filteredTableData objectForKey:[sectionsTitle objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:@"%@", [dict objectForKey:@"Name"]];
cell.detailTextLabel.text = [NSString stringWithFormat:@"%@", [dict objectForKey:@"Address"]];
}
else{
NSDictionary *dict = [[tableData objectForKey:[sectionsTitle objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:@"%@", [dict objectForKey:@"Name"]];
cell.detailTextLabel.text = [NSString stringWithFormat:@"%@", [dict objectForKey:@"Address"]];
}
return cell;
}
My search:
#pragma mark - SearchBar Delegate -
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)text{
if(text.length == 0)
{
isFiltered = FALSE;
NSLog(@"false");
}
else
{
isFiltered = true;
NSLog(@"true");
filteredTableData = [[NSMutableDictionary alloc] init];
for (MyAnnotation* ann in tableData)
{
NSRange nameRange = [ann.title rangeOfString:text options:NSCaseInsensitiveSearch];
NSRange descriptionRange = [ann.description rangeOfString:text options:NSCaseInsensitiveSearch];
if(nameRange.location != NSNotFound || descriptionRange.location != NSNotFound)
{
[filteredTableData addObject:ann];
//error
}
}
}
[myTable reloadData];
}
解决方案
First of all, you need to create a state/flag for the controller/data source, in order for it to know weather you are in search/filter mode.
Then, if you are in search mode, point the data source methods to the filteredArray.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
int numberOfSections = 0;
if (_searchMode)
{
numberOfSections = self.filteredDataDict.allKeys.count;
}
else
{
numberOfSections = self.tableData.allKeys.count;
}
return numberOfSections;
}
Hope it's understood.
这篇关于在UITableView中过滤NSMutableDictionary数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
