#import "ViewController.h"
@interface ViewController () <UITableViewDelegate, UITableViewDataSource, UISearchResultsUpdating, UISearchControllerDelegate>
{
UIBarButtonItem *_editeBtn;
UIBarButtonItem *_finishBtn;
UITableView *_tableView;
UISearchBar *_searchBar;
UILabel * _footerlable;
}
@property (nonatomic, strong) NSMutableArray *dataList;
@property (nonatomic, strong) NSMutableArray *searchList;
@property (strong, nonatomic) UISearchController *searchController;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self setTitle:@"通讯录"];
[self createBarItem];
self.dataList=[NSMutableArray arrayWithCapacity:100];
//产生100个“数字+三个随机字母”
for (NSInteger i=0; i<100; i++) {
[self.dataList addObject:[NSString stringWithFormat:@"%ld%@",(long)i,[self shuffledAlphabet]]];
}
_tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0,[UIScreen mainScreen].bounds.size.width ,[UIScreen mainScreen].bounds.size.height)];
_tableView.delegate = self;
_tableView.dataSource = self;
_tableView.separatorStyle = UITableViewCellSelectionStyleNone;
//创建UISearchController
_searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
//设置代理
_searchController.delegate = self;
_searchController.searchResultsUpdater= self;
//设置UISearchController的显示属性，以下3个属性默认为YES
//搜索时，背景变暗色
_searchController.dimsBackgroundDuringPresentation = NO;
//搜索时，背景变模糊
_searchController.obscuresBackgroundDuringPresentation = NO;
//隐藏导航栏
_searchController.hidesNavigationBarDuringPresentation = NO;
_searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x, self.searchController.searchBar.frame.origin.y, self.searchController.searchBar.frame.size.width, 44.0);
// 添加 searchbar 到 headerview
_tableView.tableHeaderView = self.searchController.searchBar;
[self.view addSubview:_tableView];
}
#pragma mark 创建导航栏按钮
- (void)createBarItem
{
_editeBtn = [[UIBarButtonItem alloc] initWithTitle:@"编辑" style:UIBarButtonItemStylePlain target:self action:@selector(clickEdite:)];
_finishBtn = [[UIBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(clickFinish:)];
self.navigationItem.rightBarButtonItem = _editeBtn;
}
//产生3个随机字母
- (NSString *)shuffledAlphabet {
NSMutableArray * shuffledAlphabet = [NSMutableArray arrayWithArray:@[@"A",@"B",@"C",@"D",@"E",@"F",@"G",@"H",@"I",@"J",@"K",@"L",@"M",@"N",@"O",@"P",@"Q",@"R",@"S",@"T",@"U",@"V",@"W",@"X",@"Y",@"Z"]];
NSString *strTest = [[NSString alloc]init];
for (int i=0; i<3; i++) {
int x = arc4random() % 25;
strTest = [NSString stringWithFormat:@"%@%@",strTest,shuffledAlphabet[x]];
}
return strTest;
}
//设置区域的行数
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
if (self.searchController.active) {
return [self.searchList count];
}else{
return [self.dataList count];
}
}
//返回单元格内容
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *flag=@"cell";
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:flag];
if (cell==nil) {
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:flag];
}
if (self.searchController.active) {
[cell.textLabel setText:self.searchList[indexPath.row]];
}
else{
[cell.textLabel setText:self.dataList[indexPath.row]];
}
return cell;
}
#pragma mark - UISearchControllerDelegate代理
//测试UISearchController的执行过程
- (void)willPresentSearchController:(UISearchController *)searchController
{
NSLog(@"willPresentSearchController");
}
- (void)didPresentSearchController:(UISearchController *)searchController
{
NSLog(@"didPresentSearchController");
}
- (void)willDismissSearchController:(UISearchController *)searchController
{
NSLog(@"willDismissSearchController");
}
- (void)didDismissSearchController:(UISearchController *)searchController
{
NSLog(@"didDismissSearchController");
}
- (void)presentSearchController:(UISearchController *)searchController
{
NSLog(@"presentSearchController");
}
-(void)updateSearchResultsForSearchController:(UISearchController *)searchController {
NSLog(@"updateSearchResultsForSearchController");
NSString *searchString = [self.searchController.searchBar text];
NSPredicate *preicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[c] %@", searchString];
if (self.searchList!= nil) {
[self.searchList removeAllObjects];
}
//过滤数据
self.searchList= [NSMutableArray arrayWithArray:[_dataList filteredArrayUsingPredicate:preicate]];
//刷新表格
[_tableView reloadData];
}
#pragma mark 导航栏按钮点击事件
- (void)clickEdite:(UIBarButtonItem *)sender
{
self.navigationItem.rightBarButtonItem = _finishBtn;
}
- (void)clickFinish:(UIBarButtonItem *)sender
{
self.navigationItem.rightBarButtonItem = _editeBtn;
}
#pragma mark 懒加载
- (NSMutableArray *)dataList
{
if (!_dataList) {
_dataList = [NSMutableArray array];
}
return _dataList;
}
- (NSMutableArray *)searchList
{
if (!_searchList) {
_searchList = [NSMutableArray array];
}
return _searchList;
}