[iOS基础控件-6.5]UITableView的数据刷新

 1 // 2 //  Hero.h 3 //  LOLHero 4 // 5 //  Created by hellovoidworld on 14/12/1. 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 7 // 8  9 #import <Foundation/Foundation.h>10 11 @interface Hero : NSObject12 13 @PRoperty(nonatomic, copy) NSString *icon;14 @property(nonatomic, copy) NSString *intro;15 @property(nonatomic, copy) NSString *name;16 17 - (instancetype) initWithDictionary:(NSDictionary *) dictionary;18 + (instancetype) heroWithDictionary:(NSDictionary *) dictionary;19 + (instancetype) hero;20 21 @end

 1 // 2 //  Hero.m 3 //  LOLHero 4 // 5 //  Created by hellovoidworld on 14/12/1. 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 7 // 8  9 #import "Hero.h"10 11 @implementation Hero12 13 - (instancetype) initWithDictionary:(NSDictionary *) dictionary {14     if (self = [super init]) {15 //        self.icon = dictionary[@"icon"];16 //        self.intro = dictionary[@"intro"];17 //        self.name = dictionary[@"name"];18         // 代替上方代码, 使用KVC19         [self setValuesForKeysWithDictionary:dictionary];20     }21    22     return self;23 }24 25 + (instancetype) heroWithDictionary:(NSDictionary *) dictionary {26     return [[self alloc] initWithDictionary:dictionary];27 }28 29 + (instancetype) hero {30     return [self heroWithDictionary:nil];31 }32 33 @end

  1 //  2 //  ViewController.m  3 //  LOLHero  4 //  5 //  Created by hellovoidworld on 14/12/1.  6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved.  7 //  8   9 #import "ViewController.h" 10 #import "Hero.h" 11  12 // 遵守了UITableViewDelegate才能响应行点击事件, 遵守UIAlertViewDelegate处理弹窗的事件 13 @interface ViewController () <UITableViewDataSource, UITableViewDelegate, UIAlertViewDelegate> 14  15 // UITableView 16 @property (weak, nonatomic) IBOutlet UITableView *tableView; 17  18 // 所有hero资料 19 @property(nonatomic, strong) NSArray *heros; 20  21 @end 22  23 @implementation ViewController 24  25 - (void)viewDidLoad { 26     [super viewDidLoad]; 27     // Do any additional setup after loading the view, typically from a nib. 28     29     // 设置dataSource 30     self.tableView.dataSource = self; 31     32     // 设置行高 33     self.tableView.rowHeight = 60; 34     35     // 设置delegate 36     self.tableView.delegate = self; 37 } 38  39 - (void)didReceiveMemoryWarning { 40     [super didReceiveMemoryWarning]; 41     // Dispose of any resources that can be recreated. 42 } 43  44 /** 隐藏状态栏 */ 45 - (BOOL)prefersstatusBarHidden { 46     return YES; 47 } 48  49 /** 延迟加载hero数据 */ 50 - (NSArray *) heros { 51     if (nil == _heros) { 52         NSArray *dictArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"heros.plist" ofType:nil]]; 53         54         NSMutableArray *herosArray = [NSMutableArray array]; 55         for (NSDictionary *dict in dictArray) { 56             Hero *hero = [Hero heroWithDictionary:dict]; 57             [herosArray addObject:hero]; 58         } 59         60         _heros = herosArray; 61     } 62     63     return _heros; 64 } 65  66 #pragma mark - 列表方法 67  68 // section数, 默认是1 69 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 70     return 1; 71 } 72  73 // 特定section的行数 74 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 75     return self.heros.count; 76 } 77  78  79 // 特定行的内容 80 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 81     Hero *hero = self.heros[indexPath.row]; 82     83     // 使用static修饰局部变量，能保证只分配一次存储空间 84     static NSString *hereCellId = @"hero"; 85     86     // 使用特定标识符, 从缓存池查看时候有适合的cell存在 87     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:hereCellId]; 88     89     if (nil == cell) { 90         // 创建的时候指定标识符 91         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:hereCellId]; 92     } 93  94     // 标题 95     cell.textLabel.text = hero.name; 96     97     // 副标题 98     cell.detailTextLabel.text = hero.intro; 99    100     // 图标101     cell.imageView.image = [UIImage imageNamed:hero.icon];102 103     return cell;104 }105 106 #pragma mark - 响应事件107 108 /** 点击选中某行 */109 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {110     // 取得model111     Hero *hero = self.heros[indexPath.row];112    113     // 弹窗114     UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"修改英雄名称" message:nil delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];115    116     // 设置delegate，也可以在init方法中指定117     alertView.delegate = self;118    119     // 设置弹窗样式120     alertView.alertViewStyle = UIAlertViewStylePlainTextInput;121    122     // 设置弹窗输入框内容123     [alertView textFieldAtIndex:0].text = hero.name;124    125     // 保存index126     alertView.tag = indexPath.row;127    128     // 显示弹窗129     [alertView show];130 }131 132 /** 处理弹窗点击“确定”按钮事件 */133 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {134     // 取消135     if (0 == buttonIndex) return;136    137     // 确定138     // 保存新的名字到model139     Hero *hero = self.heros[alertView.tag];140     hero.name = [alertView textFieldAtIndex:0].text;141    142     // 刷新数据143     // 1.全局刷新144 //    [self.tableView reloadData];145    146     // 2.局部刷新147     NSIndexPath *indexPath = [NSIndexPath indexPathForRow:alertView.tag inSection:0];148     [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationRight];149    150 }151 152 @end