我一直在编写带有自定义 UITableViewCell (PlayerCell) 的 UITableView 示例。一切正常，我可以看到表格中的元素并且可以选择它们，但是当我向上滚动时，应用程序崩溃了。我已经查看了标识符、控制器的类以及所有内容，但是当我使用自定义单元格时，它不起作用。如果我使用默认样式，它可以正常工作，包括向上滚动。
我认为我在这种方法中遇到了问题：didSelectRowAtIndexPath
但是调试器，不要给我一个错误，只有这样的东西：EXEC BAD ADRESSS（我这里没有电脑）
这是我的代码：
MyTeamViewController.h
#import <UIKit/UIKit.h>
@interface MyTeamViewController : UITableViewController
@property (nonatomic, strong) NSMutableArray *players;
@end
MyTeamViewController.m
#import "MyTeamViewController.h"
#import "Player.h"
#import "PlayerCell.h"
@interface MyTeamViewController ()
@end
@implementation MyTeamViewController
@synthesize players;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
// Override point for customization after application launch.
players = [NSMutableArray arrayWithCapacity:20];
Player *player = [[Player alloc] init];
player.name = @"Bill Evans";
player.game = @"Tic-Tac-Toe";
player.rating = 4;
[players addObject:player];
player = [[Player alloc] init];
player.name = @"Oscar Peterson";
player.game = @"Spin the Bottle";
player.rating = 5;
[players addObject:player];
player = [[Player alloc] init];
player.name = @"Dave Brubeck";
player.game = @"Texas Hold’em Poker";
player.rating = 2;
[players addObject:player];
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
//#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
//#warning Incomplete method implementation.
// Return the number of rows in the section.
NSUInteger numberCells = players.count;
return numberCells;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"PlayerCell";
PlayerCell *cell = (PlayerCell *)[tableView
dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
NSLog(@"Cell is NIL");
//I don't know what put here <-- MY PROBLEM!!! :(
}
Player *player = [self.players objectAtIndex:indexPath.row];
cell.nameLabel.text = player.name;
cell.pointsLabel.text = player.game;
cell.clubImageView.image = [self
imageForRating:player.rating];
// Configure the cell...
return cell;
}
- (UIImage *)imageForRating:(int)rating
{
switch (rating)
{
case 1: return [UIImage imageNamed:@"1StarSmall.png"];
case 2: return [UIImage imageNamed:@"2StarsSmall.png"];
case 3: return [UIImage imageNamed:@"3StarsSmall.png"];
case 4: return [UIImage imageNamed:@"4StarsSmall.png"];
case 5: return [UIImage imageNamed:@"5StarsSmall.png"];
}
return nil;
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
/*
<#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];
*/
}
@end
其他文件：
播放器.h
#import <Foundation/Foundation.h>
@interface Player : NSObject
@property (nonatomic, copy) NSString *name;
@property (nonatomic, copy) NSString *game;
@property (nonatomic, assign) int rating;
@end
播放器.m
#import "Player.h"
@implementation Player
@synthesize name;
@synthesize game;
@synthesize rating;
@end
播放器细胞.h
#import <UIKit/UIKit.h>
@interface PlayerCell : UITableViewCell
@property (nonatomic, strong) IBOutlet UILabel *nameLabel;
@property (nonatomic, strong) IBOutlet UILabel *pointsLabel;
@property (nonatomic, strong) IBOutlet UIImageView
*clubImageView;
@end
PlayerCell.m
#import "PlayerCell.h"
@implementation PlayerCell
@synthesize nameLabel;
@synthesize pointsLabel;
@synthesize clubImageView;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
@end
太感谢了！！
编辑：我解决了它：players = [[NSMutableArray arrayWithCapacity:20] retain];