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我试图访问在一个视图控制器中声明的属性和对象,在我需要它们的页面中。通过继承视图控制器来实现。但是我遇到了问题在这里,继承控制器正在使控制器覆盖。我的意思是子类控制器的导航栏和标题视图显示在使用的视图中。当我删除[super viewDidLoad]方法时,需要显示的视图不是越来越displayed.Also继承视图控制器的标题视图越来越displayed.I并使用下面的语句继承:我也张贴代码:使用继承控制器覆盖标题查看标题
ERViewEditController class:
@interface ERViewEditController:ERAddReminderController
{
UITableView *theTable;
}
@property(nonatomic,retain) IBOutlet UITableView *theTable;
@end
@implementation ERViewEditController
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
self.view.backgroundColor = [[UIColor alloc]initWithPatternImage:[UIImage imageNamed:@"bg.jpg"]];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(pop:)];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"Edit" style:UIBarButtonItemStylePlain target:self action:@selector(edit:)];
[self setTitle:@"Reminders Listed"];
[self.theTable reloadData];
[super viewDidLoad];
}
- (UITableViewCell *)tableView:(UITableView *)view cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellId = [NSString stringWithFormat:@"S%1dR%1d",indexPath.section,indexPath.row];
UITableViewCell *cell = (UITableViewCell *)[view dequeueReusableCellWithIdentifier:CellId];
UILabel *label1 = [[[UILabel alloc]initWithFrame:CGRectMake(54, 3, 100, 40)]autorelease];
label1.backgroundColor = [UIColor clearColor];
label1.textColor = [UIColor whiteColor];
UILabel *label2 = [[[UILabel alloc]initWithFrame:CGRectMake(119, 3, 100, 40)]autorelease];
label2.backgroundColor = [UIColor clearColor];
label2.textColor = [UIColor whiteColor];
UILabel *label3 = [[[UILabel alloc]initWithFrame:CGRectMake(198, 3, 100, 40)]autorelease];
label3.backgroundColor = [UIColor clearColor];
label3.textColor = [UIColor whiteColor];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellId] autorelease];
view.backgroundColor = [UIColor clearColor];
cell.backgroundColor = [[UIColor alloc]initWithPatternImage:[UIImage imageNamed:@"reminderbutton.png"]];
if (indexPath.section == 0)
{
UILabel *label = [[[UILabel alloc]initWithFrame:CGRectMake(20, 3, 280, 40)]autorelease];
label.backgroundColor = [UIColor clearColor];
label.text = @" ID Name Event Date";
label.textColor = [UIColor cyanColor];
[cell addSubview:label];
}
else if (indexPath.section == 1)
{
const char *dbpath = [databasePath UTF8String];
sqlite3_stmt *statement;
if (sqlite3_open(dbpath, &remindersDB) == SQLITE_OK)
{
NSString *querySQL = [NSString stringWithFormat:@"SELECT name,event,date FROM reminders"];
const char *query_stmt = [querySQL UTF8String];
if (sqlite3_prepare_v2(remindersDB ,query_stmt , -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_ROW)
{
NSString *nameField = [[NSString alloc] initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)];
NSString *eventField = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 1)];
NSString *dateField = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
[nameField stringByAppendingString:eventField];
label1.text = nameField;
label2.text = eventField;
label3.text = dateField;
}
sqlite3_finalize(statement);
}
sqlite3_close(remindersDB);
}
switch (indexPath.row)
{
case 0:
[cell addSubview:label1];
[cell addSubview:label2];
[cell addSubview:label3];
break;
default:
break;
}
}
}
return cell;
}
My navigation bar issue is resolved,now I have still been facing the header view title issue,I used the following code to fix:
-(NSString *)tableView:(UITableView *)atableView titleForHeaderInSection:(NSInteger)section
{
return @"";
}
但不工作请帮我摆脱这种感谢Mr.Ben的答案:)
我也有一个问题,请检查太多,如果可能的话,在此先感谢:)
Populate the table view sections with rows of table in sqlite database in an order
Ben Yeah我明白了,谢谢你的回答,这对导航栏问题非常合适。但是标题视图仍然被继承视图控制器覆盖,请帮我解决这个问题! –
请参阅编辑的答案和屏幕截图Mr.Ben,在此先感谢:) –
本人发现解决方案,为什么继承控制器的标题视图正在显示... 由于视图控制器是subclassed所有功能,如导航酒吧,标题视图等将出现,因此我们需要实现超类的所有方法,即 正如我已经实现 - (UIView的*)的tableView:(UITableView的*)atableView viewForHeaderInSection:(NSInteger的)与标题继承控制器部分, 我们需要实现同样的方法,只是返回nil来解决这些问题 无论如何,感谢大家对我的问题的耐心和回应,再次感谢......再见TC。 –