PFQueryTableViewController不顯示自定義單元格

Question

我有一個PFQueryTableViewController的子類，我試圖在容器視圖（作爲子視圖）中顯示。我的問題是，我無法讓自定義單元格顯示在tableview中。我已經通過調試驗證了以下情況：

• 的tableview中被添加到父視圖
• 的tableview中是一個PFQueryTableView控制器，因爲它包括默認拉刷新
• 的PFQuery被返回正確的數的對象
• 所述的cellForRowAtIndexPath方法被調用，並通過
• 從解析正確的數據被傳遞給不同的標籤在細胞中正確的次數迭代
• 標籤通過IBOulets連接到我的UITableViewCell的子類中。當我試圖訪問標籤時它正常工作，因爲它訪問的子類和標籤

我有一切工作正確，除了單元格實際顯示了！我錯過了什麼？

這是我的cellForRowAtIndexPath代碼：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object{ 

    static NSString *CellIdentifier = @"RoundCell"; 

    RoundCell* cell = [tableView dequeueReusableCellWithIdentifier: CellIdentifier]; 

    if (cell == nil) 
    { 
     cell = [[RoundCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
    } 

    // get string values from Parse 
    NSString * teeString =[object objectForKey:@"roundTee"]; 
    NSString* courseString = [object objectForKey:@"roundCourse"]; 
     NSString * courseString2 = [[courseString stringByAppendingString:@" - "]stringByAppendingString:teeString]; 
    NSString * dateString = [object objectForKey:@"roundDate"]; 
    NSString * scoreString = [object objectForKey:@"roundScore"]; 
    NSString * differentialString = [object objectForKey:@"roundDifferential"]; 


    cell.courseNameCell.text = courseString2; 
    cell.dateCell.text = dateString; 
    cell.scoreCell.text= scoreString; 
    cell.differentialCell.text=differentialString; 
    return cell; 
} 

Answer 1

正確的方法是調用自定義單元格中的cellForRowAtIndexPath。

檢查兩個基本的東西：

1.在故事板，然後單擊在屬性檢查器中的細胞會檢查電池是否具有正確的標識

2集cellForRowAtIndexPath以這種方式：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object{ 

CustomCell *cell = (CustomCell *)[self.tableView dequeueReusableCellWithIdentifier:@"YOUR CELL NAME" forIndexPath:indexPath]; 

你的情況嘗試

所以：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object{ 

    CustomCell *cell = (CustomCell *)[self.tableView dequeueReusableCellWithIdentifier:@"YOUR CELL NAME" forIndexPath:indexPath]; 

    NSString * teeString =[object objectForKey:@"roundTee"]; 
    NSString* courseString = [object objectForKey:@"roundCourse"]; 
     NSString * courseString2 = [[courseString stringByAppendingString:@" - "]stringByAppendingString:teeString]; 
    NSString * dateString = [object objectForKey:@"roundDate"]; 
    NSString * scoreString = [object objectForKey:@"roundScore"]; 
    NSString * differentialString = [object objectForKey:@"roundDifferential"]; 


    cell.courseNameCell.text = courseString2; 
    cell.dateCell.text = dateString; 
    cell.scoreCell.text= scoreString; 
    cell.differentialCell.text=differentialString; 
    return cell; 
} 

不要忘了導入自定義單元格的子類在File.m

#import "YourCustomCell.h" 

，並設置單元格中的身份檢查

Answer 2

如果你在XIB中設計了你的UITableView單元格（這聽起來像你一樣），那麼你不能使用alloc init範例初始化您的對象。你必須使用：

cell = [[[NSBundle mainBundle] loadNibNamed:@"MyCellXibFile" 
            owner:nil 
            options:nil] objectAtIndex:0] 

Answer 3

斯威夫特版本（前1.2）：

import UIKit 

class JPUsersTableViewController: PFQueryTableViewController { 

override init!(style: UITableViewStyle, className: String!) { 
    super.init(style: style, className: className) 
    textKey = "username" 
    pullToRefreshEnabled = true 
    paginationEnabled = true 
    objectsPerPage = 25 
} 

required init(coder aDecoder: NSCoder) { 
    super.init(coder: aDecoder) 
} 

override func viewDidLoad() { 
    super.viewDidLoad() 

    title = "Users" 

    tableView.registerClass(PFTableViewCell.self, forCellReuseIdentifier: kTableViewCellIdentifier) 
    tableView.separatorInset.right = tableView.separatorInset.left 
    tableView.tableFooterView = UIView(frame: CGRectZero) 
    view.backgroundColor = kbackgroundColor 

    let returnIcon = UIBarButtonItem(image: kNavBarReturnIcon, style: .Plain, target: navigationController, action: "popViewControllerAnimated:") 
    returnIcon.tintColor = kToolbarIconColor 
    navigationItem.leftBarButtonItem = returnIcon 

    tableView.reloadData() 
    addPullToRefresh() 
} 

override func queryForTable() -> PFQuery! { 
    let query = PFUser.query() 
    query.whereKey("username", notEqualTo: PFUser.currentUser().username) 
    query.orderByAscending("username") 

    //if network cannot find any data, go to cached (local disk data) 
    if (self.objects.count == 0){ 
     query.cachePolicy = kPFCachePolicyCacheThenNetwork 
    } 

    return query 
} 

// MARK: - Navigation 

override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!, object: PFObject!) -> PFTableViewCell! { 
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as PFTableViewCell 
    cell.textLabel?.text = object["username"] as? String 

    if let profileImage = object["profileImage"] as? PFFile { 
     cell.imageView.file = profileImage 
    } 
    else { 
     cell.imageView.image = kProfileDefaultProfileImage 
    } 

    cell.textLabel?.font = UIFont(name: kStandardFontName, size: kStandardFontSize) 
    cell.textLabel?.textColor = UIColor.whiteColor() 
    cell.backgroundColor = kbackgroundColor 

    return cell 
} 

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat { 
    return 50 
} 
}