[iOS基础控件

A.需求

1.以LOL英雄列表为蓝本，给其加上实时修改英雄名称的功能

2.使用UIAlertView

3.全局刷新reloadData

4.局部刷新

 

 

B.实现

1.使用UIAlertView

    // 弹窗

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"修改英雄名称" message:nil delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];

 

2.全局刷新reloadData

    // 刷新数据
    // 1.全局刷新

   [self.tableView reloadData];

 

3.局部刷新

    // 2.局部刷新
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:alertView.tag inSection:0];

    [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationRight];

 

 

C.主要代码

//
//  Hero.h
//  LOLHero
//
//  Created by hellovoidworld on 14/12/1.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Hero : NSObject

@property(nonatomic, copy) NSString *icon;
@property(nonatomic, copy) NSString *intro;
@property(nonatomic, copy) NSString *name;

- (instancetype) initWithDictionary:(NSDictionary *) dictionary;
+ (instancetype) heroWithDictionary:(NSDictionary *) dictionary;
+ (instancetype) hero;

@end

 

//
//  Hero.m
//  LOLHero
//
//  Created by hellovoidworld on 14/12/1.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import "Hero.h"

@implementation Hero

- (instancetype) initWithDictionary:(NSDictionary *) dictionary {
    if (self = [super init]) {
//        self.icon = dictionary[@"icon"];
//        self.intro = dictionary[@"intro"];
//        self.name = dictionary[@"name"];
        // 代替上方代码, 使用KVC
        [self setValuesForKeysWithDictionary:dictionary];
    }
   
    return self;
}

+ (instancetype) heroWithDictionary:(NSDictionary *) dictionary {
    return [[self alloc] initWithDictionary:dictionary];
}

+ (instancetype) hero {
    return [self heroWithDictionary:nil];
}

@end

 

//
//  ViewController.m
//  LOLHero
//
//  Created by hellovoidworld on 14/12/1.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import "ViewController.h"
#import "Hero.h"

// 遵守了UITableViewDelegate才能响应行点击事件, 遵守UIAlertViewDelegate处理弹窗的事件
@interface ViewController () <UITableViewDataSource, UITableViewDelegate, UIAlertViewDelegate>

// UITableView
@property (weak, nonatomic) IBOutlet UITableView *tableView;

// 所有hero资料
@property(nonatomic, strong) NSArray *heros;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    // 设置dataSource
    self.tableView.dataSource = self;
   
    // 设置行高
    self.tableView.rowHeight = 60;
   
    // 设置delegate
    self.tableView.delegate = self;
}

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

/** 隐藏状态栏 */
- (BOOL)prefersStatusBarHidden {
    return YES;
}

/** 延迟加载hero数据 */
- (NSArray *) heros {
    if (nil == _heros) {
        NSArray *dictArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"heros.plist" ofType:nil]];
       
        NSMutableArray *herosArray = [NSMutableArray array];
        for (NSDictionary *dict in dictArray) {
            Hero *hero = [Hero heroWithDictionary:dict];
            [herosArray addObject:hero];
        }
       
        _heros = herosArray;
    }
   
    return _heros;
}

#pragma mark - 列表方法

// section数, 默认是1
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

// 特定section的行数
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.heros.count;
}


// 特定行的内容
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    Hero *hero = self.heros[indexPath.row];
   
    // 使用static修饰局部变量，能保证只分配一次存储空间
    static NSString *hereCellId = @"hero";
   
    // 使用特定标识符, 从缓存池查看时候有适合的cell存在
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:hereCellId];
   
    if (nil == cell) {
        // 创建的时候指定标识符
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:hereCellId];
    }

    // 标题
    cell.textLabel.text = hero.name;
   
    // 副标题
    cell.detailTextLabel.text = hero.intro;
   
    // 图标
    cell.imageView.image = [UIImage imageNamed:hero.icon];

    return cell;
}

#pragma mark - 响应事件

/** 点击选中某行 */
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // 取得model
    Hero *hero = self.heros[indexPath.row];
   
    // 弹窗
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"修改英雄名称" message:nil delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
   
    // 设置delegate，也可以在init方法中指定
    alertView.delegate = self;
   
    // 设置弹窗样式
    alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
   
    // 设置弹窗输入框内容
    [alertView textFieldAtIndex:0].text = hero.name;
   
    // 保存index
    alertView.tag = indexPath.row;
   
    // 显示弹窗
    [alertView show];
}

/** 处理弹窗点击“确定”按钮事件 */
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    // 取消
    if (0 == buttonIndex) return;
   
    // 确定
    // 保存新的名字到model
    Hero *hero = self.heros[alertView.tag];
    hero.name = [alertView textFieldAtIndex:0].text;
   
    // 刷新数据
    // 1.全局刷新
//    [self.tableView reloadData];
   
    // 2.局部刷新
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:alertView.tag inSection:0];
    [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationRight];
   
}

@end