一、搜框中输入关键字的事件响应

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{NSLog(@"输入的关键字是---%@---%lu",searchText,(unsigned long)searchText.length);//需要事先清空存放搜索结果的数组[self.resultArray removeAllObjects];//加个多线程，否则数量量大的时候，有明显的卡顿现象//这里最好放在数据库里面再进行搜索，效率会更快一些dispatch_queue_t globalQueue = dispatch_get_global_queue(0, 0);dispatch_async(globalQueue, ^{if (searchText!=nil && searchText.length>0) {//遍历需要搜索的所有内容，其中self.dataArray为存放总数据的数组for (DataModel *model in self.dataArray) {NSString *tempStr = model.content;//----------->把所有的搜索结果转成成拼音NSString *pinyin = [self transformToPinyin:tempStr];NSLog(@"pinyin--%@",pinyin);if ([pinyin rangeOfString:searchText options:NSCaseInsensitiveSearch].length >0 ) {//把搜索结果存放self.resultArray数组[self.resultArray addObject:model];}} }else{self.resultArray = [NSMutableArray arrayWithArray:self.dataArray];}//回到主线程dispatch_async(dispatch_get_main_queue(), ^{[_tableView reloadData];});});
}

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二、获取汉字转成拼音字符串 通讯录模糊搜索 支持拼音检索 首字母 全拼 汉字 搜索

- (NSString *)transformToPinyin:(NSString *)aString
{//转成了可变字符串NSMutableString *str = [NSMutableString stringWithString:aString];CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);//再转换为不带声调的拼音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:@"#"];//区分第几个字母}[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;
}

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