实现搜索功能,主要用到的控件 searchBar
用到的核心方法:
实现思路:
顾名思义,首先需要一个VC来推出原来搜索界面,想铺什么内容,按自己兴趣来定,抓到点击搜索进入的接口,在该接口的字符串中拼接 上述方法中的参数searchText.然后进行解析,将内容在同一个VC上用tableView展现出来,接下来可以实现tableView中的每行cell的点击方法.
我项目中搜索功能的代码块.(包含搜索关键字的高亮)
@interface SearchViewController ()@property (nonatomic, retain) UITableView *tableView;
@property (nonatomic, retain) NSMutableArray *arrForSearch;
@property (nonatomic, retain) UISearchBar *search;
@property (nonatomic, retain) UIButton *backButton;
@property (nonatomic, retain) NSString *searchText;
@end
@implementation SearchViewController
- (void)dealloc {
[_tableView release];
[_arrForSearch release];
[_search release];
[_backButton release];
[_searchText release];
[super dealloc];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
[self.navigationController setNavigationBarHidden:NO animated:YES];
self.navigationItem.hidesBackButton = YES;
self.navigationController.navigationBar.backgroundColor = [UIColor whiteColor];
[self createSearchBar];
[self createTableView];
}
- (void)createSearchBar {
self.search = [[UISearchBar alloc]initWithFrame:CGRectMake(10, 0, [UIScreen mainScreen].bounds.size.width - 50-10, 44)];
[self.navigationController.navigationBar addSubview:self.search];
self.navigationController.navigationBar.backgroundColor = [UIColor grayColor];
[self.search release];
self.search.placeholder = @"搜索";
self.search.layer.cornerRadius = 10;
self.search.layer.masksToBounds = YES;
self.search.delegate = self;
self.backButton = [UIButton buttonWithType:UIButtonTypeSystem];
[self.navigationController.navigationBar addSubview:self.backButton];
self.backButton.frame = CGRectMake([UIScreen mainScreen].bounds.size.width - 50, 0, 50, 44);
[self.backButton setTitle:@"取消" forState:UIControlStateNormal];
[self.backButton setTitleColor:[UIColor lightGrayColor] forState:UIControlStateNormal];
[self.backButton addTarget:self action:@selector(handleButton:) forControlEvents:UIControlEventTouchUpInside];
}
- (void)handleButton:(UIButton *)button {
[self.navigationController popViewControllerAnimated:YES];
self.search.hidden = YES;
self.backButton.hidden = YES;
}
- (void)createTableView {
self.tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 10, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height) style:UITableViewStylePlain];
[self.view addSubview:self.tableView];
[self.tableView release];
self.tableView.dataSource = self;
self.tableView.delegate = self;
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"poolForUITableViewCell"];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.arrForSearch.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ModelForSearch *model = [self.arrForSearch objectAtIndex:indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"poolForUITableViewCell"];
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:model.imgPath] placeholderImage:[UIImage imageNamed:@"2.jpg"]];
cell.textLabel.text = model.keyword;
//搜索关键字高亮.
NSMutableAttributedString *attri = [[NSMutableAttributedString alloc]initWithString:cell.textLabel.text];
NSStringCompareOptions mask = NSCaseInsensitiveSearch | NSNumericSearch;
NSRange range = [cell.textLabel.text rangeOfString:self.searchText options:mask];
[attri addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:range];
[cell.textLabel setAttributedText:attri];
[attri release];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
ModelForSearch *model = [self.arrForSearch objectAtIndex:indexPath.row];
SecendViewController *secend = [[SecendViewController alloc]init];
secend.stringForAlbumID = model.keyid;
[self.navigationController pushViewController:secend animated:YES];
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
self.arrForSearch = [NSMutableArray array];
NSString *tempString = [searchText stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
NSString *stringUrl = [NSString stringWithFormat:@"http://search.ximalaya.com/suggest?device=android&kw=%@",tempString];
self.searchText = searchText;
[NetworkHandlerBlock netWorkingWithURL:stringUrl completeHandle:^(NSURLResponse *response, NSData *data, id result) {
NSLog(@"============%@",result);
NSArray *arrTemp = [result objectForKey:@"albumResultList"];
for (NSDictionary *dic in arrTemp) {
ModelForSearch *model = [[ModelForSearch alloc]init];
[model setValuesForKeysWithDictionary:dic];
// 当遇到数据源的key值是关键词的时候,改key值名,并在此处重新给这个key值赋上相应的Value值
model.keyid =[dic objectForKey:@"id"];
[self.arrForSearch addObject:model];
NSLog(@"=======%@",model.keyid);
}
[self.tableView reloadData];
}];
}
- (void)viewWillDisappear:(BOOL)animated {
// 键盘回收.
[self.search endEditing:YES];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
