问题描述
这是我的代码段，其中对名称进行了少量修改.
This is a snippet of my code with small edits in names.
String[] items;
ArrayList<String>tempListItems;
public void initList() {
if(query()){
items = new String[tempListItems.size()];
items = tempListItems.toArray(items);
Arrays.sort(items);
Log.d("HSearch - initList", "Generate Clean List");
Log.d("initList - temp size", Integer.toString(tempListItems.size()));
Log.d("initList - items size", Integer.toString(items.length));
}
}
private boolean query() {
tempListItems = new ArrayList<String>();
ParseQuery<ParseObject> query = ParseQuery.getQuery("Table");
query.orderByAscending("name");
query.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(List<ParseObject> list, com.parse.ParseException e) {
if (e == null) {
for (ParseObject name : list) {
tempListItems.add(name.getString("name"));
}
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
});
return true;
}
我的问题出在query()中，如果我在done()之后检查tempListItems的大小，则该大小不为空.但是，一旦完成了query()并返回到initList()，如果再次检查tempListItems，它将为空.
My problem is in query(), if I check the size of tempListItems after done() the size is not empty. However, once query() is done and I return back to initList(), if I check tempListItems again it is empty.
done()是query()中的一种方法.我忘记了它的技术术语！
done() is a method within query(). I forgot the technical term of it!
我不确定如何确保在query()期间对tempListItems的更改，在返回后，done()仍然保留.
I'm unsure of how to make sure changes to tempListItems during query() and done() stays after it returns.
推荐答案
String[] items;
final ArrayList<String>tempListItems;
{
tempListItems= new ArrayList<>();
}
public void initList() {
if(query()){
items = new String[tempListItems.size()];
items = tempListItems.toArray(items);
Arrays.sort(items);
Log.d("HSearch - initList", "Generate Clean List");
Log.d("initList - temp size", Integer.toString(tempListItems.size()));
Log.d("initList - items size", Integer.toString(items.length));
}
}
private boolean query() {
ParseQuery<ParseObject> query = ParseQuery.getQuery("Table");
query.orderByAscending("name");
query.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(List<ParseObject> list, com.parse.ParseException e) {
if (e == null) {
for (ParseObject name : list) {
tempListItems.add(name.getString("name"));
}
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
});
return true;
}
将您的方法公开以在其他类中使用.
Make your methods public to use in other classes.
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