UISearchBar搜索两个阵列
问题描述:
我有一个搜索栏搜索数组,并更新与结果的UITableView。表视图是一个书单,加标题,作者:UISearchBar搜索两个阵列
眼下,在搜索栏中只搜索标题,但我想,使搜索作者为好。这里是我的搜索代码(我从http://blog.webscale.co.in/?p=228得到)。
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
[tableData removeAllObjects];// remove all data that belongs to previous search
if([searchText isEqualToString:@""]||searchText==nil){
[tableView reloadData];
return;
}
for(NSString *name in dataSource){
NSInteger counter = 0;
//NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];
NSRange r = [[name lowercaseString] rangeOfString:[searchText lowercaseString]];
if(r.location != NSNotFound)
[tableData addObject:name];
counter++;
}
//[pool release];
[tableView reloadData];
}
数据源是NSMutable Array包含的标题。包含作者的数组称为“作者”。 “tableData”是存储应该出现在屏幕上的单元格(包含要搜索的术语的单元格)的数组。
非常感谢,
卢克
答
我会修改数据源阵列通过键值对(Book类会更好)创建一个NSDictionary同时包含标题和作者。
//Do this for each book
NSDictionary * book = NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:
title, @"TITLE", author, @"AUTHOR", nil];
[dataSource addObject:book];
之后,你可以改变你的搜索方法,而不是使用NSDictionary。
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
[tableData removeAllObjects];
if(searchText != nil && ![searchText isEqualToString:@""]){
for(NSDictionary * book in dataSource){
NSString * title = [book objectForKey:@"TITLE"];
NSString * author = [book objectForKey:@"AUTHOR"];
NSRange titleRange = [[title lowercaseString] rangeOfString:[searchText lowercaseString]];
NSRange authorRange = [[author lowercaseString] rangeOfString:[searchText lowercaseString]];
if(titleRange.location != NSNotFound || authorRange.location != NSNotFound)
[tableData addObject:book];
}
}
[tableView reloadData];
}
注意使用这种方法,你将有变化你的cellForRowAtIndexPath方法与NSDictionary中,而不是标题字符串工作。
答
-(void)searchBar:(UISearchBar *)searchBar1 textDidChange:(NSString *)searchText
{
if ([searchText length]==0)
{
temp_array1 =[array_Main1 mutableCopy];
temp_array2 =[array_Main2 mutableCopy];
temp_array3 =[array_Main3 mutableCopy];
}
else
{
[temp_array1 removeAllObjects];
[temp_array2 removeAllObjects];
[temp_array3 removeAllObjects];
int g = 0;
for (int i=0; i< array_Main1.count;i++)
{
NSRange Range1 = [[array_Main1 objectAtIndex:i] rangeOfString:searchText options:NSCaseInsensitiveSearch];
NSRange Range2 = [[array_Main2 objectAtIndex:i] rangeOfString:searchText options:NSCaseInsensitiveSearch];
NSRange Range3 = [[array_Main3 objectAtIndex:i] rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (Range1.location != NSNotFound || Range2.location != NSNotFound || Range3.location != NSNotFound)
{
[temp_array1 addObject:[array_Main1 objectAtIndex:g]];
[temp_array2 addObject:[array_Main2 objectAtIndex:g]];
[temp_array3 addObject:[array_Main3 objectAtIndex:g]];
}
g++;
}
}
[table reloadData];
}
答
- This is Helpful when you search from Dictionary.
NSMutableArray *contentList;
NSMutableArray *filteredContentList;
BOOL isSearching;
// firstSection is array which already filled.
// contentList array for value of particular key
// filteredContentList is search array from actual array.
- (void)searchTableList {
NSString *searchString = searchBar.text;
NSPredicate *filterPredicate = [NSPredicate predicateWithFormat:@"frame_code beginswith[c] %@", searchString];
NSArray *filteredArr = [firstSection filteredArrayUsingPredicate:filterPredicate];
if(contentList.count > 0)
[contentList removeAllObjects];
[filteredContentList addObjectsFromArray:filteredArr];
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar1 {
if ([searchBar1.text length] != 0)
isSearching = YES;
else
isSearching = NO;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
NSLog(@"Text change - %d",isSearching);
//Remove all objects first.
[filteredContentList removeAllObjects];
if([searchText length] != 0) {
isSearching = YES;
[self searchTableList];
}
else {
isSearching = NO;
}
[tblFrameList_SComplete reloadData];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
NSLog(@"Cancel clicked");
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
NSLog(@"Search Clicked");
[self searchTableList];
}
完美的答案@Joel克拉维茨 – Jashu 2016-03-17 05:19:04