[英]How can I show a PFUser array of Parse in a UITableVIew in iOS?
到目前为止,我已经尝试过以下代码:
PFGeoPoint * myGeoPoint = [PFUser currentUser][@"coordinates"]; // Your geoPoint
PFQuery *query = [PFUser query];
[query includeKey:@"User"];
[query whereKey:@"coordinates" nearGeoPoint:myGeoPoint withinMiles:radiusInMiles];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if(!error){
for (PFUser *object in objects){
users = (NSArray*)[object ObjectForKey:@"User"];
}
[self.tableView reloadData];
}
}
}];
- (PFUser*) objectAtIndexPath:(NSIndexPath*)indexPath {
PFUser *object = [PFUser objectWithClassName: @"User"];
[object setObject:[users objectAtIndex:indexPath.row] forKey:@"User"];
return object;
}
// Use myObjects for numberOfRowsInSection:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection: (NSInteger)section {
return users.count;
}
//Use your custom object for cellForRowAtIndexPath:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath object:(PFUser *)object {
static NSString *simpleTableIdentifier = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
// Configure the cell using object
UILabel *reviewLabel = (UILabel *)[cell viewWithTag:10];
reviewLabel.text = [object objectForKey:object.username];
PFFile *userImageFile = object[@"profilePic"];
[userImageFile getDataInBackgroundWithBlock:^(NSData *imageData, NSError *error) {
if (!error) {
if (imageData != nil)
cell.imageView.image = [UIImage imageWithData:imageData];
else cell.imageView.image= [UIImage imageNamed:@"defaultPerson"];
}
}];
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
SMChatViewController *chatController = [SMChatViewController alloc];
// [chatController initWithPhoto:image];
[self presentModalViewController:chatController animated:YES];
}
在这段代码中,我将PFUsers数组检索为“对象”。将对象数组保存给用户时,它返回为空。 因此,有人可以建议我一些如何在tableView中设置用户名和profilepic吗?
我猜查询不正确。 尝试这个:
PFGeoPoint * myGeoPoint = [PFUser currentUser][@"coordinates"]; // Your geoPoint
PFQuery *query = [PFQuery queryWithObject:@"_User"];
NSArray *userList = [NSArray new];
[query whereKey:@"coordinates" nearGeoPoint:myGeoPoint withinMiles:radiusInMiles];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if(!error){
userList = objects;
[self.tableView reloadData];
}
}];
在您的代码中,您要询问“用户”对象,然后从该对象中获取“用户”字段。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath {
static NSString *simpleTableIdentifier = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
PFUser *user = (PFUser*)[users objectAtIndex:indexPath.row];
cell.textLabel.text=user.username;
PFFile *userImageFile = user[@"profilePic"];
[userImageFile getDataInBackgroundWithBlock:^(NSData *imageData, NSError *error) {
if (!error) {
if (imageData != nil)
cell.imageView.image = [UIImage imageWithData:imageData];
else cell.imageView.image= [UIImage imageNamed:@"defaultPerson.png"];
}
}];
return cell;
}
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