我正在使用 Parse.com 从数据库中检索我需要的数据。
在我的表格视图中，我有一个根据此查询更改颜色的图像，该查询使用显示的帖子调用 CurrentUser 的报告。
-(void)QueryForUpVote {
PFQuery *QueryForUpVotePost = [PFQuery queryWithClassName:FF_POST_CLASS];
[QueryForUpVotePost whereKey:@"UP_Vote" equalTo:[PFUser currentUser]];
[QueryForUpVotePost findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
UpVoteCurrentUser = [[NSMutableArray alloc] init];
for (PFObject *ObjectForUpVote in objects) {
[UpVoteCurrentUser addObject:ObjectForUpVote];
}
[self.FFTableView reloadData];
}
}];
}
在 Tableview 中，我添加了这个以确保是否有与 CurrentUser 有关系的帖子（就像一种社交网络）
if ([[PFUser currentUser] objectForKey:@"UP_Vote"] ) {
CellaIMG.MedalCount.image = [UIImage imageNamed:@"FFIMG_Medal_Blu"];
CellaIMG.AddGoPoint.tag = indexPath.row;
[CellaIMG.AddGoPoint addTarget:self action:@selector(AddGoPointAction:) forControlEvents:UIControlEventTouchUpInside];
} else {
CellaIMG.MedalCount.image = [UIImage imageNamed:@"FFIMG_Medal"];
CellaIMG.AddGoPoint.tag = indexPath.row;
[CellaIMG.AddGoPoint addTarget:self action:@selector(DecrementGoPoint:) forControlEvents:UIControlEventTouchUpInside];
}
我目前的问题是 TableView 无法识别 CurrentUser 与帖子显示的关系......当用户与帖子有特定关系时，我提供的图像应该变成灰色到蓝色......我在哪里做错了吗？
MutableArray 用于：
- (void)AddGoPointAction:(id)sender {
PFObject *AddGoPointToPost = [self.UpVoteCurrentUser objectAtIndex:[sender tag]];
[AddGoPointToPost incrementKey:FF_POST_GOPOINTPOST byAmount:[NSNumber numberWithInt:1]];
PFRelation *RelationForVote = [AddGoPointToPost relationforKey:@"UP_Vote"];
[RelationForVote addObject:[PFUser currentUser]];
[AddGoPointToPost saveInBackground];
[self.FFTableView reloadData];
}
- (void)DecrementGoPoint:(id)sender {
PFObject *AddGoPointToPost = [self.UpVoteCurrentUser objectAtIndex:[sender tag]];
[AddGoPointToPost incrementKey:FF_POST_GOPOINTPOST byAmount:[NSNumber numberWithInt:-1]];
PFRelation *RelationForVote = [AddGoPointToPost relationforKey:@"UP_Vote"];
[RelationForVote removeObject:[PFUser currentUser]];
[AddGoPointToPost saveInBackground];
[self.FFTableView reloadData];
}