iOS 5 Storyboard 学习之 Tabbar Controller，Navigation Controller (2) 代码部分
继续《iOS 5 Storyboard 学习之 Tabbar Controller，Navigation Controller (1)》的内容，如果想从头学习Storyboard，请参考《iOS 5 Storyboard 学习之 UITableViews》
1 建立文件“ PlayersViewController”记得选择”UITableViewController“
2 选择“Table View Controller”设置“Identity Inspector”的Class为“PlayersViewController”
编辑“ PlayersViewController.h”，建立一个可修改的数组，这个将是我们今后存储Player数据的地方
#import <UIKit/UIKit.h>
@interface PlayersViewController : UITableViewController
@property (nonatomic,strong) NSMutableArray *players;
@end
3 先放一放，建立一个基于“Objective-C class template”的Player文件，他的Subclass是“NSObject”
然后编辑“Player.h”和“Player.m”
“Player.h”
#import <Foundation/Foundation.h>
@interface Player : NSObject
@property (nonatomic,copy)NSString *name, *game;
@property (nonatomic,assign) int rating;
@end
“Player.m”
#import "Player.h"
@implementation Player
@synthesize name,game,rating;
@end
4 接下来在App Delegate中作些动作，首先在AppDelegate.m中import“ Player.h”和“ PlayersViewController.h”
编辑“AppDelegate.m”
#import "AppDelegate.h"
#import "Player.h"
#import "PlayersViewController.h"
@implementation AppDelegate {
NSMutableArray *players;
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
players = [NSMutableArray arrayWithCapacity:20];
Player *player = [[Player alloc] init];
player.name = @"xxd";
player.game = @"游泳";
player.rating = 4;
[players addObject:player];
player = [[Player alloc] init];
player.name = @"张三";
player.game = @"足球";
player.rating = 5;
[players addObject:player];
player = [[Player alloc] init];
player.name = @"李四";
player.game = @"篮球";
player.rating = 2;
[players addObject:player];
//此为storyboard的局限，在Interface Builder时代，在MainWindow.xib中可以链接view controllers到App Delegate的outlets，但是现在不可以，只能写代码设置第一个controller是什么，或者谁知道有什么办法请告知，谢谢。
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
//同样UINavigationController也只能这样设置，指定UINavigationController是tabBarController的第一个显示
UINavigationController *navigationController = [[tabBarController viewControllers] objectAtIndex:0];
//指定PlayersViewController是navigationController的第一个显示
PlayersViewController *playersViewController = [[navigationController viewControllers] objectAtIndex:0];
//上边的三句都是为了设定这一句而写，因为不写默认就是上边的顺序，但是不写就没有这个和players链接的接口了
playersViewController.players = players;
return YES;
}
5 修改item1下的数据显示，修改“PlayersViewController.m”
#import "PlayersViewController.h"
#import "Player.h"
@implementation PlayersViewController
@synthesize players;
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.players count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"PlayerCell"];
Player *player = [self.players objectAtIndex:indexPath.row];
cell.textLabel.text = player.game;
cell.detailTextLabel.text = player.game;
return cell;
}
目前俄显示结果应该是这样的
6 下面来看看我们能在“Prototype Cells”中做些什么
设置Table View高为55
托一个UiImageView到Cell上，然后设置Cell行高
设置出右边的箭头
设置ImageView的宽度
最后测试别较好的大小是：x = 199，Y = 13, Width = 81, Height = 28
然后我们配置Cell，基于“Objective-C class template”建立一个PlayerCell文件，他的Subclass是“NSObject”
“ PlayerCell.h”
#import <Foundation/Foundation.h>
@interface PlayerCell : UITableViewCell
@property(nonatomic, strong) IBOutlet UILabel *nameLabel,*gameLabel;
@property(nonatomic, strong) IBOutlet UIImageView *ratingImageView;
@end
“ PlayerCell.m”
#import "PlayerCell.h"
@implementation PlayerCell
@synthesize nameLabel,gameLabel;
@synthesize ratingImageView;
@end
点击MainStoryboard.storyboard，点击 prototype cell修改他的Class为“ PlayerCell”
然后在“PlayersViewController.m”中添加
#import "PlayerCell.h"
在“PlayersViewController.m”中修改
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
PlayerCell *cell =(PlayerCell *)[tableView dequeueReusableCellWithIdentifier:@"PlayerCell"];
Player *player =[self.players objectAtIndex:indexPath.row];
cell.nameLabel.text = player.name;
cell.gameLabel.text = player.game;
cell.ratingImageView.image =[self imageForRating:player.rating];
return cell;
}
随后在“PlayersViewController.h”中添加
-(UIImage *)imageForRating:(int)rating;
在“PlayersViewController.h”中添加
-(UIImage *)imageForRating:(int)rating
{
switch(rating)
{
case1:return[UIImage imageNamed:@"1StarSmall.png"];
case2:return[UIImage imageNamed:@"2StarsSmall.png"];
case3:return[UIImage imageNamed:@"3StarsSmall.png"];
case4:return[UIImage imageNamed:@"4StarsSmall.png"];
case5:return[UIImage imageNamed:@"5StarsSmall.png"];
}
return nil;
}
运行看看什么模样
7 增加删除功能，在“ PlayersViewController.m”添加下边代码
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath*)indexPath
{
if(editingStyle == UITableViewCellEditingStyleDelete)
{
[self.players removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
调整一下，让星星能够自动躲避
看下显示效果
今天就到这里，明天继续。下一篇《iOS 5 Storyboard 学习之 Tabbar Controller，Navigation Controller (3) 深入Segue，Class，Protocol，Delegate的基本使用》
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