【代码笔记】带索引的tableView

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController
<UITableViewDelegate,UITableViewDataSource,UISearchDisplayDelegate,UISearchBarDelegate>
{
UITableView * tableview;
NSMutableArray * Aarray;
UISearchBar * searchBar;
UISearchDisplayController *searchControl;
}
@end

#import "RootViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.

//初始化背景图
[self initBackGroundView];
}
#pragma -mark -functions
-(void)initBackGroundView
{
Aarray = [[NSMutableArray alloc] initWithObjects:@"+",@"我",@"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",@"#",nil];

//tableView
tableview = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 460-44-10-10-20) style:UITableViewStylePlain];
tableview.tag = 101;
tableview.delegate = self;
tableview.dataSource = self;
[self.view addSubview:tableview];

//searchView
searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
tableview.tableHeaderView = searchBar;
searchBar.showsScopeBar = YES;
searchBar.placeholder = @"在全部关注中搜索...";

//搜索的时候会有左侧滑动的效果
searchControl = [[UISearchDisplayController alloc]initWithSearchBar:searchBar contentsController:self];
searchControl.delegate = self;
searchControl.searchResultsDataSource = self;
searchControl.searchResultsDelegate = self;

}
#pragma -mark -searchbar
-(void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope
{
;
}
#pragma -mark -UITableViewDelegate
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 2;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (section == 0) {
return 1;
}
return 100;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 40.0;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString * strID = @"ID";
UITableViewCell * cell = [tableview dequeueReusableCellWithIdentifier:strID];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:strID];
}

if (indexPath.section == 0 && indexPath.row == 0) {
cell.textLabel.text = @"找朋友";
}else if(indexPath.section ==1 && indexPath.row == 0){
cell.textLabel.text=@"row";
}
return cell;
}

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
if (section == 1) {
return @"我的资料";
}
return nil;
}
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
return [NSArray arrayWithObjects:UITableViewIndexSearch,@"+",@"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",@"#", nil];
}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}