顯示所有行的最後一條記錄

Question

我有一個EventObject數組。每個對象都有標題和城市以及其他許多屬性。我想將單元格的標題顯示爲事件標題，並將單元格的標題顯示爲事件城市。我在下面試過這樣做，但我只獲得最後一個對象顯示4次（即數組中的對象數量）。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath]; 

// NSDate *object = _objects[indexPath.row]; 
// cell.textLabel.text = [object description]; 

    EventObject *eventInstance = [[EventObject alloc] init]; 
    int row = [indexPath row]; 

    eventInstance = eventObjectsArray[row]; 
    cell.textLabel.text = eventInstance.eventTitle; 
    NSLog(@"Event Title: %@", eventInstance.eventTitle); 
    cell.detailTextLabel.text = eventInstance.eventCity; 

    return cell; 
} 

我做錯了什麼？我正在學習Objective-C，所以初學者肯定會犯錯誤。由於

編輯：這是怎麼了插入對象：

//get events from database 
    eventsDictionary = [eventInstance getEventsObjects]; 

    //process each key in dictionary and assign to eventInstance 
    for(id key in eventsDictionary) 
    { 
     eventInstance.eventId = [NSString stringWithFormat:@"%@", key[@"id"]]; 
     eventInstance.eventTitle = [NSString stringWithFormat:@"%@", key[@"title"]]; 
     eventInstance.eventDescription = [NSString stringWithFormat:@"%@", key[@"description"]]; 
     eventInstance.eventCity = [NSString stringWithFormat:@"%@", key[@"city"]]; 
     [eventObjectsArray addObject:eventInstance]; 
    } 

Answer 1

建議

[這可能是問題]

雖然在eventObjectsArray添加對象確保在添加對象之前每次都有新的EventObject對象

EventObject *eventInstance = [[EventObject alloc] init]; 
eventInstance.eventTitle = @"your title"; 
eventInstance.eventCity = @"your city"; 
[eventObjectsArray addObject:eventInstance]; 

[這是建議，你應該知道這一點，以提高你的編碼標準和內存管理]

雖然從陣列retriving對象回你真的不需要定製對象的實例，而有refrence到它就像

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath]; 

    //EventObject *eventInstance = [[EventObject alloc] init]; //you don't need this 
    int row = [indexPath row]; 

    EventObject *eventInstance = eventObjectsArray[row]; // make reference like this 
    cell.textLabel.text = eventInstance.eventTitle; 
    NSLog(@"Event Title: %@", eventInstance.eventTitle); 
    cell.detailTextLabel.text = eventInstance.eventCity; 

    return cell; 
}