iPhone之表视图按钮事件

表视图的列表按钮

SecondLevelViewController.h－－－查看前边例子

接口实现：

 

#import <Foundation/Foundation.h> #import "SecondLevelViewController.h" @interface RowControlsController : SecondLevelViewController {     NSArray *list; } @property (nonatomic, retain) NSArray *list; - (IBAction)buttonTapped:(id)sender; @end

 

 

实现：

 

#import "RowControlsController.h"

@implementation RowControlsController
@synthesize list;

//表视图按钮的点击事件
- (IBAction)buttonTapped:(id)sender
{
    UIButton *senderButton = (UIButton *)sender;
    UITableViewCell *buttonCell = (UITableViewCell *)[senderButton superview];
 
 //获取表视图的一行id
    NSUInteger buttonRow = [[self.tableView indexPathForCell:buttonCell] row];
 //获取列表内容
    NSString *buttonTitle = [list objectAtIndex:buttonRow];
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"You tapped the button"
                                                    message:[NSString stringWithFormat:@"You tapped the button for %@", buttonTitle]
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];
    [alert release];
}
- (void)viewDidLoad {
    NSArray *array = [[NSArray alloc] initWithObjects:@"R2-D2",
                      @"C3PO", @"Tik-Tok", @"Robby", @"Rosie", @"Uniblab",
                      @"Bender", @"Marvin", @"Lt. Commander Data",
                      @"Evil Brother Lore", @"Optimus Prime", @"Tobor", @"HAL",
                      @"Orgasmatron", nil];
    self.list = array;
    [array release];
    [super viewDidLoad];
}
- (void)viewDidUnload {
    self.list = nil;
    [super viewDidUnload];
}
- (void)dealloc {
    [list release];
    [super dealloc];
}
#pragma mark -
#pragma mark Table Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView
 numberOfRowsInSection:(NSInteger)section {
    return [list count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView
         cellForRowAtIndexPath:(NSIndexPath *)indexPath {
   
    static NSString *ControlRowIdentifier = @"ControlRowIdentifier";
   
    UITableViewCell *cell = [tableView
                             dequeueReusableCellWithIdentifier:ControlRowIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                       reuseIdentifier:ControlRowIdentifier] autorelease];
  
  //设置按钮
        UIImage *buttonUpImage = [UIImage imageNamed:@"button_up.png"];
        UIImage *buttonDownImage = [UIImage imageNamed:@"button_down.png"];
        UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
        button.frame = CGRectMake(0.0, 0.0, buttonUpImage.size.width, buttonUpImage.size.height);
        [button setBackgroundImage:buttonUpImage forState:UIControlStateNormal];
        [button setBackgroundImage:buttonDownImage forState:UIControlStateHighlighted];
        [button setTitle:@"Tap" forState:UIControlStateNormal];
        [button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
  
  //将按钮添加到行中
        cell.accessoryView = button;
       
    }
    NSUInteger row = [indexPath row];
    NSString *rowTitle = [list objectAtIndex:row];
    cell.textLabel.text = rowTitle;
   
    return cell;
}
#pragma mark -
#pragma mark Table Delegate Methods
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
 
 //点击一行时的操作
    NSUInteger row = [indexPath row];
    NSString *rowTitle = [list objectAtIndex:row];
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"You tapped the row."
                                                    message:[NSString stringWithFormat:@"You tapped %@.", rowTitle]
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];
    [alert release];
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
}
@end