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[操作系统]【代码笔记】带索引的tableView


一,效果图。

二,工程图。

三,代码。

RootViewController.h

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#import <UIKit/UIKit.h>@interface RootViewController : UIViewController<UITableViewDelegate,UITableViewDataSource,UISearchDisplayDelegate,UISearchBarDelegate>{  UITableView * tableview;  NSMutableArray * Aarray;  UISearchBar * searchBar;  UISearchDisplayController *searchControl;}@end
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RootViewController.m

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#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.}
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