Question

表格视图包含在常规视图中正如预期的那样，点击“编辑”按钮（在该表格视图中）为每一行显示“带负号的红点”（即方法“setEditing”执行正常）。
但是，单击此红点不会显示相应的“删除”按钮（'commitEditingStyle'不会执行）。
任何可能出错的想法（参见下面的相关代码）？

//---- RootViewController.h ----
@interface RootViewController : UIViewController <NSFetchedResultsControllerDelegate> {    //used to be a 'UITableViewController'. Changed to UIViewController and rewired so I could add an iAd banner and the tableView to it. Before that change, issue was not present (commitEditingStyle below used to work).
...
}
@property (nonatomic, retain) IBOutlet UITableView *tableView;   

//----- RootViewController.m ----
- (void)viewDidLoad {
    self.navigationItem.leftBarButtonItem = self.editButtonItem; 
    ...
}
- (void) setEditing:(BOOL)editing animated:(BOOL)animated {    //Added so clicking 'Edit' displays red dots that rotate on tap (as expected).
    [super setEditing:editing animated:animated];         
    [self.tableView setEditing:editing animated:animated];
    if (editing) {                                           
        NSLog(@"RootViewController setEditing");             //Executes OK.
    }
}
- (void)tableView:(UITableView *)tableView                  //Clicking a red dot no longer executes this method (so, does not display 'Delete' red button).
commitEditingStyle:(UITableViewCellEditingStyle)editingStyle  
forRowAtIndexPath:(NSIndexPath *)indexPath {         

    NSLog(@"RootViewController commitEditingStyle");           //Does NOT execute.
    ...
}

Answer 1

仔细检查您是否已将表UITableViewDelegate和UITableViewDataSource正确连接到您编写的新UIViewController上。

Answer 2

确保将cell.editingAccessoryView设置为nil：

-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath {
 cell.editingAccessoryView = nil;
}

Answer 3

你没有在.h中实现tableView协议..你的类界面应该是这样的

@interface RootViewController : UIViewController <NSFetchedResultsControllerDelegate, UITableViewDelegate,UITableViewDataSource>

编辑UITableView时，单击红点无法显示“删除”按钮

3 个答案: