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我試圖訪問在一個視圖控制器中聲明的屬性和對象,在我需要它們的頁面中。通過繼承視圖控制器來實現。但是我遇到了問題在這裏,繼承控制器正在使控制器覆蓋。我的意思是子類控制器的導航欄和標題視圖顯示在使用的視圖中。當我刪除[super viewDidLoad]方法時,需要顯示的視圖不是越來越displayed.Also繼承視圖控制器的標題視圖越來越displayed.I並使用下面的語句繼承:我也張貼代碼:使用繼承控制器覆蓋標題查看標題
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 @"";
}
但不工作請幫我擺脫這種感謝Mr.Ben的答案:)
我也有一個問題,請檢查太多,如果可能的話,在此先感謝:)
Populate the table view sections with rows of table in sqlite database in an order
Ben Yeah我明白了,謝謝你的回答,這對導航欄問題非常合適。但是標題視圖仍然被繼承視圖控制器覆蓋,請幫我解決這個問題! –
請參閱編輯的答案和屏幕截圖Mr.Ben,在此先感謝:) –
本人發現解決方案,爲什麼繼承控制器的標題視圖正在顯示... 由於視圖控制器是subclassed所有功能,如導航酒吧,標題視圖等將出現,因此我們需要實現超類的所有方法,即 正如我已經實現 - (UIView的*)的tableView:(UITableView的*)atableView viewForHeaderInSection:(NSInteger的)與標題繼承控制器部分, 我們需要實現同樣的方法,只是返回nil來解決這些問題 無論如何,感謝大家對我的問題的耐心和迴應,再次感謝......再見TC。 –