我正在尝试在UIViewController中创建一个UITableView(我使用UITableViewController,但我希望UITableView只使用一半的屏幕空间),每次按下按钮都会创建一个新的自定义单元格,并显示该单元格中的当前时间以及自上次按下按钮以来的时间(因此该单元格中的时间减去其上方单元格中的时间)。 问题是,当我按下按钮时,没有任何反应,或者,如果我没有初始化我为UITableView创建的属性,则会出现一个空白单元格。
我的单元格中有3个UILabel,inOut,entryTime和delta,我为UITableView创建的IBOutlet是timeTable。 newEntry是按钮。我已经设置了我的UITableView的数据源并委托给我的UIViewController,在我的UIViewController的标题上“调用”了UITableViewDataSource,UITableViewDelegate协议。我找不到什么是错的。
这是我的UIViewController代码:
@interface MainViewController ()
@property (strong, nonatomic) Brain *brain;
@end
@implementation MainViewController{
@private
NSMutableArray *_entryArray;
NSMutableArray *_timeSinceLastEntryArray;
}
@synthesize brain=_brain;
@synthesize timeTable=_timeTable;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
_brain = [[Brain alloc] init];
_entryArray = [[NSMutableArray alloc] init];
_timeSinceLastEntryArray = [[NSMutableArray alloc] init];
_timeTable = [[UITableView alloc] initWithFrame:CGRectZero];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [_entryArray count];
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier= @"Cell";
CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (indexPath.row%2==0){
cell.inOut.text = [NSString stringWithFormat:@"Entrada %d", indexPath.row/2 +1];
cell.entryTime.text = [NSString stringWithFormat:@"%@", [_entryArray objectAtIndex:indexPath.row]];
if (indexPath.row==0){
cell.delta.text=@"";
}
else {
cell.delta.text = [_timeSinceLastEntryArray objectAtIndex:indexPath.row];
}
}
else{
cell.inOut.text = [NSString stringWithFormat:@"Saída %d", (indexPath.row+1)/2];
cell.entryTime.text = [NSString stringWithFormat:@"%@",[_entryArray objectAtIndex:indexPath.row]];
cell.delta.text = [_timeSinceLastEntryArray objectAtIndex:indexPath.row];
}
return cell;
}
- (IBAction)newEntry:(id)sender {
[_entryArray addObject:[self.brain currentTime]];
NSInteger numberOfEntrys= [_entryArray count];
if (numberOfEntrys >1){
NSString *timeSinceLastEntry = [_brain timeSince:[_entryArray objectAtIndex:(numberOfEntrys-2)]];
[_timeSinceLastEntryArray addObject:timeSinceLastEntry];
}
else {
[_timeSinceLastEntryArray addObject:@"0"];
}
[_timeTable reloadData];
}
@end
和CustomCell:
@implementation CustomCell
- (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
}
@synthesize inOut=_inOut, entryTime=_entryTime, delta=_delta;
- (id)initWithFrame:(CGRect)frame reuseIdentifier:(NSString *)reuseIdentifier {
if (self = [super initWithFrame:frame reuseIdentifier:reuseIdentifier]) {
// Initialization code
_inOut = [[UILabel alloc]init];
_inOut.textAlignment = UITextAlignmentLeft;
_entryTime = [[UILabel alloc]init];
_entryTime.textAlignment = UITextAlignmentLeft;
_delta = [[UILabel alloc]init];
_delta.textAlignment = UITextAlignmentLeft;
[self.contentView addSubview:_entryTime];
[self.contentView addSubview:_inOut];
[self.contentView addSubview:_delta];
}
return self;
}
@end
感谢您的帮助:)
答案 0 :(得分:1)
我看到你把初始化代码放在
中- (id)initWithFrame:(CGRect)frame reuseIdentifier:(NSString *)reuseIdentifier
但是你用
创建对象cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
并且您没有将Frame提供给您创建的视图
_inOut = [[UILabel alloc]init];
_entryTime = [[UILabel alloc]init];
_delta = [[UILabel alloc]init];
希望它可以帮到你