Question

我想按最近的位置对我的tableview单元格进行排序。假设我有14家商店和我想按位置排序。做这样的事有什么例子吗？

谢谢！

是，我有一个14个单元格的桌面视图我将带有导航控制的14个商店的名称放在带有详细信息的其他视图中（也来自plist）。这14家商店遍布全国各地。我想根据我在国内的位置按地点排序（当然有GPS的助手）我希望neares商店能够排在最前面。

这是我需要使用的排序代码，但我无法弄清楚如何＆amp;在哪里将它与表格集成。对于每个需要它的人 - 随意使用此代码:) ..很多人需要：

- (NSComparisonResult)compareDistance:(id)obj 
{
    CLLocation* loc = [[CLLocation alloc]initWithLatitude:32.066157 longitude:34.777821];

    StoreAnnotation* operand1 = self;
    StoreAnnotation* operand2 = obj;

    CLLocation* operand1Location = [[CLLocation alloc]initWithLatitude:operand1.coordinate.latitude longitude:operand1.coordinate.longitude];

    CLLocationDistance distanceOfLocFromOperand1 = [loc distanceFromLocation:operand1Location];
    NSLog(@"The distance of loc from op1 = %f meters", distanceOfLocFromOperand1);

    CLLocation* operand2Location = [[CLLocation alloc]initWithLatitude:operand2.coordinate.latitude longitude:operand2.coordinate.longitude];

    CLLocationDistance distanceOfLocFromOperand2 = [loc distanceFromLocation:operand2Location];
    NSLog(@"The distance of loc from op2 = %f meters", distanceOfLocFromOperand2);

    if (distanceOfLocFromOperand1 < distanceOfLocFromOperand2) 
    {
        return NSOrderedAscending;
    }

    else if (distanceOfLocFromOperand1 > distanceOfLocFromOperand2)
        return NSOrderedDescending;

    else return NSOrderedSame;

}

如果有人可以帮助我那将是很棒的.. 非常感谢。

Answer 1

好的，所以我得到了与单元格一起完成工作的代码以及下面的排序代码。我希望它能帮助很多需要它的开发人员。感谢您尝试提供帮助：）

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [arrayFromPlist count];
    NSLog(@"Array SIZE = %d",[arrayFromPlist count]);
}

- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
{
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];

}   
    cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
    StoreAnnotation* tmpSt = [[Storage sharedStorage].sortedStoresArr objectAtIndex:indexPath.row];
    cell.textLabel.text = tmpSt.title;
    cell.textLabel.textColor = [UIColor whiteColor];
    double lat1=[lat doubleValue];
    double lon1=[lon doubleValue];
    CLLocation *userLocation = [[CLLocation alloc] initWithLatitude:lat1 longitude:lon1];
    CLLocation *distForIndex = [[CLLocation alloc] initWithLatitude:tmpSt.coordinate.latitude longitude:tmpSt.coordinate.longitude];
    CLLocationDistance distance = [userLocation distanceFromLocation:distForIndex];
    NSLog(@"DISTANCE FOR CELL %d - %f",indexPath.row, distance);
    cell.detailTextLabel.text = [[NSString alloc] initWithString:[NSString stringWithFormat:@"%0.1f kmh", distance/1000]];
    cell.detailTextLabel.textColor = [UIColor yellowColor];
    cell.imageView.image = [UIImage imageNamed:@"imageName.png"];
    UIView* backgroundView = [[ UIView alloc ] initWithFrame:CGRectZero];
    backgroundView.backgroundColor = [ UIColor blackColor ];
    cell.backgroundView = backgroundView;
    for ( UIView* view in cell.contentView.subviews ) 
    {
        view.backgroundColor = [ UIColor blackColor ];
    }

return cell;
}

按位置排序TableView？

1 个答案: