ios搜尋（可實現模糊搜尋 支援拼音檢索 首字母等）

一、搜框中輸入關鍵字的事件響應

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{    NSLog(@"輸入的關鍵字是---%@---%lu",searchText,(unsigned long)searchText.length);    //需要事先清空存放搜尋結果的數組    [self.resultArray removeAllObjects];    //加個多線程，否則數量量大的時候，有明顯的卡頓現象    //這裡最好放在資料庫裡面再進行搜尋，效率會更快一些    dispatch_queue_t globalQueue = dispatch_get_global_queue(0, 0);    dispatch_async(globalQueue, ^{        if (searchText!=nil && searchText.length>0) {            //遍曆需要搜尋的所有內容，其中self.dataArray為存放總資料的數組            for (DataModel *model in self.dataArray) {                NSString *tempStr = model.content;                //----------->把所有的搜尋結果轉成成拼音                NSString *pinyin = [self transformToPinyin:tempStr];                NSLog(@"pinyin--%@",pinyin);                if ([pinyin rangeOfString:searchText options:NSCaseInsensitiveSearch].length >0 ) {                    //把搜尋結果存放self.resultArray數組                    [self.resultArray addObject:model];                }            }         }else{            self.resultArray = [NSMutableArray arrayWithArray:self.dataArray];        }        //回到主線程        dispatch_async(dispatch_get_main_queue(), ^{            [_tableView reloadData];        });    });}

二、擷取漢字轉成拼音字串 通訊錄模糊搜尋 支援拼音檢索 首字母 全拼 漢字 搜尋

- (NSString *)transformToPinyin:(NSString *)aString{    //轉成了可變字串    NSMutableString *str = [NSMutableString stringWithString:aString];    CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);    //再轉換為不帶聲調的拼音    CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);    NSArray *pinyinArray = [str componentsSeparatedByString:@" "];    NSMutableString *allString = [NSMutableString new];    int count = 0;    for (int  i = 0; i < pinyinArray.count; i++)    {        for(int i = 0; i < pinyinArray.count;i++)        {            if (i == count) {                [allString appendString:@"#"];                //區分第幾個字母            }            [allString appendFormat:@"%@",pinyinArray[i]];        }        [allString appendString:@","];        count ++;    }    NSMutableString *initialStr = [NSMutableString new];    //拼音首字母    for (NSString *s in pinyinArray)    {        if (s.length > 0)        {            [initialStr appendString:  [s substringToIndex:1]];        }    }    [allString appendFormat:@"#%@",initialStr];    [allString appendFormat:@",#%@",aString];    return allString;}