先上效果图（数据是造的，UI上四个items就经纬度不一样）：
根据当前位置从近到远排序
其实这个很简单，额.....但是还是觉得总结还是进步的关键。
先说思路：先根据接口返回的数据（经纬度）、根据百度地图的当前定位，然后计算出每条数据到到当前点的距离（精确度最好要高，）。 这里我使用数组arrayKeys保存所有的距离。然后创建一个字典dataDic把当前距离distance作为key,values为key对应下的数据model。然后我们将数据arrayKeys进行排序。这样只要arrayKeys排序了，对应的model其实也相当于排序了。
贴出关键代码：
NSDictionary *params = @{@"networkProvince":@"安徽",@"pageIndex":@(1),@"pageSize":@(10)};
[AFNetworkTool GET:queryNetworkListUrl parameters:params showHUD:YES success:^(id returnData) {
NetworkListModel *model = [NetworkListModel mj_objectWithKeyValues:returnData];
self.dataArray = (NSMutableArray *)model.data.data;
//已无更多数据
if (self.dataArray.count==0) {
//停止上拉刷新
[self.tableview.mj_footer endRefreshingWithNoMoreData];
return;
}
//排序
if (self.isLocationOK) {
//获取所有key的集合
NSMutableArray *arrayKeys = [NSMutableArray array];
//key:距离 values:模型
NSMutableDictionary *dataDic = [NSMutableDictionary dictionary];
for (int i = 0; i < self.dataArray.count; i++) {
NetworkListDetail *dictModel = self.dataArray[i];
//根据用户指定的两个坐标点，计算这两个点的实际地理距离。核心代码如下:
BMKMapPoint point1 = BMKMapPointForCoordinate(self.locationCoordinate2D);
BMKMapPoint point2 = BMKMapPointForCoordinate(CLLocationCoordinate2DMake([dictModel.network_latitude doubleValue],[dictModel.network_longitude doubleValue]));
CLLocationDistance distance = BMKMetersBetweenMapPoints(point1,point2);
YLLog(@"self.arrayRecivedKeys ---distance %fd",distance);
[arrayKeys addObject:[NSNumber numberWithDouble:distance]];
[dataDic setObject:dictModel forKey:[NSNumber numberWithDouble:distance]];
self.dictRecivedValues = dataDic;
}
//排序arrayKeys
NSArray *sortedArray = [arrayKeys sortedArrayUsingComparator:^NSComparisonResult(NSNumber *obj1, NSNumber *obj2) {
if ([obj1 floatValue] < [obj2 floatValue]) {
return NSOrderedAscending;
} else {
return NSOrderedDescending;
}
}];
self.arrayAllKeys = sortedArray;
YLLog(@"arrayAllKeys --- %@",self.arrayAllKeys);
}
//总页数
self.totalPage= [model.data.totalPageNum integerValue];
if (self.dataArray) {
//记录当前页
self.currentPage = 1;
}
//重新载入数据
[self.tableview reloadData];
//停止下拉刷新
[self.tableview.mj_header endRefreshing];
} failure:^(NSError *error) {
//停止下拉刷新
[self.tableview.mj_header endRefreshing];
}];
地图代理方法里：
//处理位置坐标更新
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
YLLog(@"didUpdateUserLocation lat %f,long %f",userLocation.location.coordinate.latitude,userLocation.location.coordinate.longitude);
//发起反向地理编码检索
_searcher =[[BMKGeoCodeSearch alloc]init];
_searcher.delegate = self;
CLLocationCoordinate2D pt = (CLLocationCoordinate2D){userLocation.location.coordinate.latitude, userLocation.location.coordinate.longitude};
self.locationCoordinate2D = pt;
BMKReverseGeoCodeOption *reverseGeoCodeSearchOption = [[
BMKReverseGeoCodeOption alloc]init];
reverseGeoCodeSearchOption.reverseGeoPoint = pt;
BOOL flag = [_searcher reverseGeoCode:reverseGeoCodeSearchOption];
if(flag)
{
YLLog(@"反geo检索发送成功");
self.isLocationOK = YES;
[self setupRefresh:self.tableview];
}
else
{
YLLog(@"反geo检索发送失败");
self.isLocationOK = NO;
[self setupRefresh:self.tableview];
}
[_locService stopUserLocationService];
}
//接收反向地理编码结果
-(void)onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result: (BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error{
if (error == BMK_SEARCH_NO_ERROR) {
_mapLb.text = [NSString stringWithFormat:@"当前位置：%@",result.address];
YLLog(@"%@",result.address);
YLLog(@"%@",result.addressDetail.province);
}
else {
_mapLb.text = @"当前定位失败";
YLLog(@"抱歉，未找到结果");
}
}
Tableview代理方法：
#pragma mark -UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.dataArray.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
AfterServerCell *cell = [AfterServerCell afterServerCellWithTableView:tableView];
cell.model = self.dictRecivedValues[self.arrayAllKeys[indexPath.row]];
// cell.model = self.dataArray[indexPath.row];
cell.distance = self.arrayAllKeys[indexPath.row];
return cell;
}
好了就是这样了，= = 。
