我UITableViewCell为 iPad 应用程序创建了一个子类。我需要动态生成文本字段，从用户那里获取输入，然后将该信息存储在一个数组中。我想询问对象，它将保存用户在我的视图控制器的 segue 之前写UITableViewCell的UITextField.text任何内容（我在NSString调用 segue 时保存对象）。所以我有一组 UITableViewCells 我要求UITextField.text 对象。但是由于某种原因，UITableViewCell在创建我的子类时，我UITextField的不是。我可以打电话UITableViewSubclass，它已初始化，但UITableViewSubclass.UITextField为零。
这是我的UITableViewCell子类标题（是的，UITextField故事板中已连接）：
#import <UIKit/UIKit.h>
@interface ConditionCell : UITableViewCell
@property (strong, nonatomic) IBOutlet UITextField *condition;
@end
这是我的实现文件：
#import "ConditionCell.h"
@implementation ConditionCell
@synthesize condition;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
self.condition = (UITextField *)[self viewWithTag:10];
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
@end
这是处理包含单元格的表格的表格视图控制器：
.h 文件：
#import <UIKit/UIKit.h>
#import "ConditionCell.h"
@interface ConditionsTableViewController : UITableViewController
@property (strong, nonatomic) NSMutableArray *conditionCellArray;
- (void)addNewConditionCell;
@end
.m 文件：
#import "ConditionsTableViewController.h"
@interface ConditionsTableViewController ()
@end
@implementation ConditionsTableViewController
@synthesize conditionCellArray = _conditionCellArray;
- (NSMutableArray *)conditionCellArray
{
if (_conditionCellArray == nil) {
// Create the array object
_conditionCellArray = [[NSMutableArray alloc] init];
}
return _conditionCellArray;
}
- (void)addNewConditionCell
{
ConditionCell *condCell = [[ConditionCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"conditionCell"];
[self.conditionCellArray addObject:condCell];
[self.tableView beginUpdates];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:self.conditionCellArray.count-1 inSection:0];
[self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationTop];
[self.tableView endUpdates];
[self.tableView reloadData];
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[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)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return self.conditionCellArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"conditionCell";
ConditionCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[ConditionCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
//cell.condition = (UITextField *)[cell viewWithTag:1];
return cell;
}
// 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:@[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];
*/
}
@end
这个表视图控制器位于 UIView 控制器中，因为表视图不占据整个屏幕。当用户按下“确定”按钮时，会触发一个 segue，在这里我向这个 Table View Controller 询问包含UITableViewCells. 不幸的是，我似乎无法在文本字段中输入任何内容，因此 .text 始终为零。如果有人可以帮助我解决这个问题，将不胜感激！