viewDidLoad &查看将会出现的阴谋
当我尝试像这样加载它时，我有一个收藏夹 plist 文件
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
NSString *path = [[NSBundle mainBundle] pathForResource:@"favorites" ofType:@"plist"];
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:path];
self.allFavorites = array;
[array release];
}
我实现的 tableView 中没有显示任何
内容，相反，当我剪切 & 时在方法中粘贴相同的代码
-viewDidLoad:
一切正常......？
我需要将代码放入 viewWillAppear 中，因为用户可能会向收藏夹添加内容以保持收藏夹列表更新。 &是的 viewWillAppear 确实被调用，在调试中我意识到 viewWillAppear 方法中的 allFavorites 数组为空......？
可能是什么问题......？
我将 allFavorites
NSMutableArray *allFavorites;
如下
@property (nonatomic, retain) NSMutableArray *allFavorites;
定义
@synthesize allFavorites;
I have a favorites plist file when I try to load it like this
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
NSString *path = [[NSBundle mainBundle] pathForResource:@"favorites" ofType:@"plist"];
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:path];
self.allFavorites = array;
[array release];
}
nothing shows up in the tableView I've implemented
on the contrary when i cut & paste the same code in
-viewDidLoad:
method everything works fine....?
I need to put the code in viewWillAppear because user may add stuff to favorites to keep the favorites list updated.
& yes viewWillAppear do gets invoked, in the debug I've realized allFavorites array is empty in the viewWillAppear method...?
What can possibly be the problem....?
I've define allFavorites as follows
NSMutableArray *allFavorites;
then
@property (nonatomic, retain) NSMutableArray *allFavorites;
then
@synthesize allFavorites;
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当您更新后备存储时，请在表视图上调用
reloadData。它会缓存数据，因此没有任何线索表明数据已更改。When you update the backing store, call
reloadDataon the table view. It caches the data, so it doesn't have any clue that it's changed.