我有一個UITableView多節。我有一個NSMutableArray作爲DataSource(floorArray)。當我重新加載tableview數據時,我得到[FloorGroup count]: unrecognized selector sent to instance 0x5c18fc0
。我的ViewController實現了UITableViewDelegate和UITableViewDataSource。我看不到任何我打電話給的FloorGroup對象。UITableViewDelegate問題
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [floorArray count];
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
FloorGroup *group = [floorArray objectAtIndex:section];
return group.floorName;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
FloorGroup *group = [floorArray objectAtIndex:section];
NSMutableArray *areasOnFloor = group.areas;
NSUInteger count = [areasOnFloor count];
return count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
FloorGroup *group = [floorArray objectAtIndex:[indexPath section]];
static NSString *identity = @"MainCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identity];
if(cell == nil)
{
cell = [[[UITableViewCell alloc] initWithFrame:CGRectMake(0.0, 0.0, 0.0, 0.0) reuseIdentifier:identity] autorelease];
}
cell.text = [group.areas objectAtIndex:indexPath.row];
return cell;
}
我的類定義是:
@interface FloorGroup : NSObject {
NSString *floorName;
NSMutableArray *areas;
}
@interface FloorArea : NSObject {
NSString *floor;
NSString *description;
NSDecimalNumber *area;
NSDecimalNumber *price;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
}
確切的錯誤是:
2011-08-05 10:54:58.692 com.Lime49.myApp[1987:207] -[FloorGroup count]: unrecognized selector sent to instance 0x5d93c90
2011-08-05 10:54:58.694 com.Lime49.myApp[1987:207] NSInvalidArgumentException
2011-08-05 10:55:02.321 com.Lime49.myApp[1987:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[FloorGroup count]: unrecognized selector sent to instance 0x5d93c90'
*** Call stack at first throw:
(
0 CoreFoundation 0x0139f5a9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x014f3313 objc_exception_throw + 44
2 CoreFoundation 0x013a10bb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x01310966 ___forwarding___ + 966
4 CoreFoundation 0x01310522 _CF_forwarding_prep_0 + 50
5 UIKit 0x006492b7 -[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 1834
6 UIKit 0x00646d88 -[UITableViewRowData numberOfRows] + 108
7 UIKit 0x004fa677 -[UITableView noteNumberOfRowsChanged] + 132
8 UIKit 0x00507708 -[UITableView reloadData] + 773
9 Foundation 0x0020b94e __NSThreadPerformPerform + 251
10 CoreFoundation 0x013808ff __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
11 CoreFoundation 0x012de88b __CFRunLoopDoSources0 + 571
12 CoreFoundation 0x012ddd86 __CFRunLoopRun + 470
13 CoreFoundation 0x012dd840 CFRunLoopRunSpecific + 208
14 CoreFoundation 0x012dd761 CFRunLoopRunInMode + 97
15 GraphicsServices 0x01b3c1c4 GSEventRunModal + 217
16 GraphicsServices 0x01b3c289 GSEventRun + 115
17 UIKit 0x0049ac93 UIApplicationMain + 1160
18 com.Lime49.myApp 0x00002256 main + 84
19 com.Lime49.myApp 0x000021f9 start + 53
)
terminate called after throwing an instance of 'NSException'
你在哪裏添加數組中的對象,並分配數組給這個code.also在哪個類。 – Ishu