iPhone Table View 教程(2) 创建一个简单表格

by Elton on 七.05, 2009, under iPhone

上一节我们介绍了iPhone的table view，这节我们先做一个简单的表格例子。

在Xcode中新建一个view based项目，命名为SimpleTable。

新建xcode项目

在SimpleTableViewController.h输入以下代码：

#import
 
@interface SimpleTableViewController : UIViewController  {
	IBOutlet UITableView *tblSimpleTable;
	NSArray *arryData;
}
@end

定义一个table view IBOutlet变量和一个数组。

打开SimpleTableViewController.xib文件，进入interface builder。
从Library拖入一个table view控件到主窗口中。

选择File’s Owner

File‘s Owner

按cmd + 2 打开 ‘Connections Inspector’

关联表格

点击tblSimpleTable边上的小圆圈，拖拽到主屏幕上的table view上，将IBOutlet变量跟Interface Builder中的表格table view关联起来。

在选择主屏幕中的table view，拖拽dataSource和delegate两个变量拖拽到File’s Owner上，指定File‘s Owner所对应的对象（即SimpleTableViewController）为tableview的datasource和delegate。

设置data source和delegate

打开SimpleTableViewController.m，编辑其中内容为：

#import "SimpleTableViewController.h"
 
@implementation SimpleTableViewController
 
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
	arryData = [[NSArray alloc] initWithObjects:@"iPhone",@"Android",@"Plam Pre",@"Windows Mobile",nil];
    [super viewDidLoad];
}
 
- (void)didReceiveMemoryWarning {
	// Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
 
	// Release any cached data, images, etc that aren't in use.
}
 
- (void)viewDidUnload {
	// Release any retained subviews of the main view.
	// e.g. self.myOutlet = nil;
}
 
- (void)dealloc {
	[arryData release];
    [super dealloc];
}
 
#pragma mark Table view methods
 
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}
 
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [arryData count];
}
 
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
 
    static NSString *CellIdentifier = @"Cell";
 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
    }
 
    // Set up the cell...
	cell.textLabel.text = [arryData objectAtIndex:indexPath.row];
    return cell;
}
 
@end

运行可以得到：

运行结果

:iPhone, Mac, table view

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youminbuluo
七月 19th, 2010 on 16:59
额，我发现官方的TableViewSuite例子里面没有datasource和delegate协议(它没有用interface builder，而是直接用代码写的，但是声明的@interface RootViewController : UITableViewController {
………………
}后面没有带上2个协议
)

不过好像默认这两个协议还是存在的，因为下文的
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 显然是协议里面规定的东西

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Julian Mckenty
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