Question

我的tableview中充满了存储在parse中的当前用户数据。我希望能够单击解析数据的单元格，并能够在编辑屏幕中编辑该数据（这将是您保存数据的屏幕）然后能够保存并更新在云上的解析类中。我在解析开发人员网站上看到了有关更新对象Updating Objects Here

的代码

PFQuery *query = [PFQuery queryWithClassName:@"GameScore"];
[query getObjectInBackgroundWithId:@"xWMyZ4YEGZ"
                     block:^(PFObject *gameScore, NSError *error) {

gameScore[@"cheatMode"] = @YES;
gameScore[@"score"] = @1338;
[gameScore saveInBackground];
}];

但问题在于

[query getObjectInBackgroundWithId:@"xWMyZ4YEGZ"
                     block:^(PFObject *gameScore, NSError *error)

是指定的特定ObjectId的查询。如何更改此设置，以便当用户单击tableview单元格时，查询将由解析中的特定ObjectId运行，以便我可以编辑与ObjectId关联的字符串。任何教程或指导都非常感谢！

这是我的Tableview.m

@implementation ViewController

- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
    // Custom the table

    // The className to query on
    self.parseClassName = @"rep";

    // The key of the PFObject to display in the label of the default cell        style
    self.textKey = @"name";

    // Whether the built-in pull-to-refresh is enabled
    self.pullToRefreshEnabled = YES;

    // Whether the built-in pagination is enabled
    self.paginationEnabled = NO;

    // The number of objects to show per page
    //self.objectsPerPage = 10;
 }
 return self;
}

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(refreshTable:)
                                             name:@"refreshTable"
                                           object:nil];
{
    UIAlertView *Alert = [[UIAlertView alloc]  initWithTitle:@"Delete Cannot    Be Undone" message:nil delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil,  nil];
    [Alert show];
}

}
- (void)refreshTable:(NSNotification *) notification
{
// Reload the recipes
[self loadObjects];
}


- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
[[NSNotificationCenter defaultCenter] removeObserver:self  name:@"refreshTable" object:nil];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:    (UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (PFQuery *)queryForTable

{
PFQuery *query = [PFQuery queryWithClassName:@"rep"];
[query whereKey:@"user" equalTo:[PFUser currentUser]];



return query;
}
- (UITableViewCell *)tableView:(UITableView *)tableView   cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *simpleTableIdentifier = @"RepCell";

UITableViewCell *cell = [tableView   dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault  reuseIdentifier:simpleTableIdentifier];
}

// Configure the cell

UILabel *nameLabel = (UILabel*) [cell viewWithTag:101];
nameLabel.text = [object objectForKey:@"name" ];

UILabel *time = (UILabel*) [cell viewWithTag:102];
time.text = [object objectForKey:@"time"];


return cell;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath     *)indexPath{

return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle: (UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{

// Remove the row from data model
PFObject *objectToDel = [self.objects objectAtIndex:indexPath.row];

[objectToDel deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {



    UIAlertView *Alert = [[UIAlertView alloc]  initWithTitle:@"Item Was Deleted Successfully. Pull Down to Refresh Tab" message:nil delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil,  nil];
    [Alert show];
    [self loadView];

}
 ];
}

- (void) objectsDidLoad:(NSError *)error
{
[super objectsDidLoad:error];

NSLog(@"error: %@", [error localizedDescription]);
}

在UiTableview中更新解析数据

0 个答案: