IOS 课程 UITable 学习(一)

在xib上拖一个uitableView ,并把dataSource,delegagte与files owner联系。

1,接口实现协议

<UITableViewDataSource,UITableViewDelegate>

2,用windows + 鼠标左键查看方法内容,在UITableViewDataSource找到必须实现的方法

 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;

3,书写实现方法:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return 3;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    NSUInteger rowx = [indexPath row];
    UITableViewCell *cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:nil]autorelease];
    if(rowx == 0 ){
        cell.textLabel.text = @"1";
        cell.detailTextLabel.text = @"1_detail";
    }else if(rowx == 1 ){
        cell.textLabel.text = @"2";
        cell.detailTextLabel.text = @"2_detail";
    }else if(rowx == 2){
        cell.textLabel.text = @"3";
        cell.detailTextLabel.text = @"3_detail";
        [cell.imageView setImage:[UIImage imageNamed:@"1.jpg"]];
    }    return cell;
}

 优化代码:

接口定义属性:

@property(assign) NSArray  *listData;

 实现类里:

- (void)viewDidLoad
{
    NSArray *array  = [[NSArray alloc]initWithObjects:@"one",@"Two",@"three",nil ];
    self.listData = array;
    
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return self.listData.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    /**自定义重用标示符号:**/
    static NSString *simpleTableIdentifier = @"SimpleTableIdentifier";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    
    if(cell == nil) {
        //初始化表格单元
        cell = [[[UITableViewCell alloc]
                 initWithStyle:UITableViewCellStyleValue1
                reuseIdentifier:simpleTableIdentifier]
                autorelease];
    }
    NSUInteger rowx = [indexPath row];
    NSString *name =  [self.listData objectAtIndex:rowx];
    cell.textLabel.text = name;
    
    if(rowx == 0 ){
        cell.detailTextLabel.text = @"1_detail";
    }else if(rowx == 1 ){
        cell.detailTextLabel.text = @"2_detail";
    }else if(rowx == 2){
        cell.detailTextLabel.text = @"3_detail";
        [cell.imageView setImage:[UIImage imageNamed:@"1.jpg"]];
    }
    return cell;
}

 鼠标选中行,添加监听事件

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    NSLog (@"用户选中了第%d行",[indexPath row]);
    return indexPath;
}

 更多事件,查看代理类:UITableViewDelegate

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转载自01jiangwei01.iteye.com/blog/1855416
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