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我需要这样做,以最小距离的顺序排列我的领域结果。所以我这样做:如何排序这个自定义RealmResult?
public void onNext(final Location location)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
nearbs = realm.where(Airport.class).greaterThanOrEqualTo("latitudeDeg",(latitude - 0.5)).lessThanOrEqualTo("latitudeDeg",(latitude + 0.5))
.greaterThanOrEqualTo("longitudeDeg",longitude - 0.5).lessThanOrEqualTo("longitudeDeg",longitude + 0.5).findAll();
realm.executeTransaction(new Realm.Transaction() {
@Override
public void execute(Realm realm)
{
for(Airport airport : nearbs)
{
Location location1 = new Location("");
location1.setLatitude(airport.getLatitudeDeg());
location1.setLongitude(airport.getLongitudeDeg());
float distance = location1.distanceTo(location);
distance = distance/1852; //Calculate the distance
airport.setDistance(distance);
Log.d("distance",String.valueOf(distance));
realm.insertOrUpdate(airport);
}
nearbs.sort("distance", Sort.ASCENDING);
adapter.updateNearbs(nearbs); //here there is notifyDataSetChanged()
}
});
}
的问题是,境界不排序列表和使适配器我没有机场的距离排序。
有没有更好的方法来做到这一点? 感谢
'nearbs = nearbs.sort( “距离”,Sort.ASCENDING);'在境界的新的更新,你应该分配排序结果到列表 –