如何在Parse.com類中查詢特定的列值並將其設置為字符串？

Question

如何在我的Parse類中查詢對象的特定值並將其設置為String？ 假設我有一個帶有特定objectId的對象，則需要“ position”列的值，並將其設置為String。

    ParseQuery<ParseObject> query = new ParseQuery<ParseObject>("NativeAd");
    query.whereEqualTo("objectId", "fYBeufqdOt");
    query.findInBackground(new FindCallback() {

        @Override
        public void done(List objects, ParseException e) {
            if (e == null) {
                Log.d("NativeAd", "Retrieved " + objects.size());
                for (ParseObject adPosition : objects) {
                    String n = adPosition.get("position").toString();
                    System.out.println(n);
                }
            } else {
                Log.d("NativeAd", "Error: " + e.getMessage());
            }
        }

    });

Answer 1

我認為這會工作

@Override
public int getViewType(int position) {
ParseQuery<ParseObject> query = new ParseQuery<ParseObject>("NativeAd");
query.whereEqualTo("objectId", "fYBeufqdOt");
final String[] n =  new String[1]; 
query.getFirstInBackground(new GetCallback() {
    @Override
    public void done(ParseObject object, ParseException e) {
         n[0] = object.toString();
    }
});

int viewType = VIEW_TYPE_MARKET_FEED;
if ((position % n[0] == 0) && position > 0) {
    viewType = VIEW_TYPE_AD;
}
return viewType;

}

現在回答您的問題：n在GetCallback匿名類中聲明，因此n僅適用於該類。