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我有以下代碼:沒有明顯的理由設置沒有的NSMutableDictionary值
//in .h file: NSMutableDictionary* expandedSections;
//in Init method: expandedSections = [[NSMutableDictionary alloc] init];
- (void) tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
NSString* key = [NSString stringWithFormat:@"%d", indexPath.row];
NSLog(@"Key: %@", key);
if ([expandedSections objectForKey:key] == nil)
{
NSLog(@"Value Should be: %@", [NSNumber numberWithBool:YES]);
[expandedSections setObject:[NSNumber numberWithBool:YES] forKey:key];
}
else
{
[expandedSections setObject:[NSNumber numberWithBool:![[expandedSections objectForKey:key] boolValue]] forKey:key];
}
NSLog(@"Value: %@", [expandedSections objectForKey:key]);
[tableView beginUpdates];
[tableView endUpdates];
}
- (float) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString* key = [NSString stringWithFormat:@"%d", indexPath.row];
NSLog(@"Key: %@", key);
NSLog(@"Value: %@", [expandedSections objectForKey:key]);
if ([expandedSections objectForKey:key] == nil || ![[expandedSections objectForKey:key] boolValue])
{
return 44;
}
else
{
return 88;
}
}
我期待這對輸出到我在我的UITableView點按行記錄的1所述的交流,爲0 。相應地,展開並摺疊我點擊的那一行。
出於某種原因,NSDictionary從來沒有任何鍵/值對,因此行不會展開。從heightForRow方法記錄出來爲:
2012-02-08 11:36:30.291 MappApp[5040:707] Key: 0
2012-02-08 11:36:30.293 MappApp[5040:707] Value: (null)
從didSlectRowAt法測井出來爲:
2012-02-08 11:36:44.551 MappApp[5040:707] Key: 0
2012-02-08 11:36:46.530 MappApp[5040:707] Value Should be: 1
2012-02-08 11:36:50.723 MappApp[5040:707] Value: (null)
我在做什麼錯?
讓它成爲一個NSMutableDictionary – Stavash 2012-02-08 11:45:59
它是我的代碼中的一個NSMutableDictionary - 這是評論中的拼寫錯誤 – 2012-02-08 11:48:08
你能不能嗎?區分NSLog中的didSelect ..和heightFor ..方法? – Ilanchezhian 2012-02-08 11:50:30