Error throwing in onPostExecute():
抛入onPostExecute()时出错:
The constructor SimpleAdapter(Commodities, ArrayList>, int, String[], int[]) is undefined
构造函数SimpleAdapter(Commodities,ArrayList>,int,String [],int [])未定义
The problem is in onPostExecute() of my AsyncTask:
问题出在我的AsyncTask的onPostExecute()中:
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
ListAdapter adapter = new SimpleAdapter(Commodities.this,
matchFixtureList, R.layout.list_item, new String[] {
TAG_SCRIPT, TAG_BUYSELL, TAG_TRADESELL, TAG_TARGET,
TAG_STOPLOSS, TAG_STATUS }, new int[] {
R.id.Script, R.id.BuySell, R.id.TradeSell,
R.id.Target, R.id.StopLoss, R.id.Status });
setListAdapter(adapter);
}
How can I solve this error? Here is the whole class code:
我该如何解决这个错误?这是全班代码:
public class Commodities extends ListFragment {
private String URL_ITEMS = "http://ourvadodara.ddns.net/NeptuneFinsol/commodities_fetch.php";
private static final String TAG_COMMODITIES = "commodities";
private static final String TAG_DATE = "date";
private static final String TAG_SCRIPT = "script";
private static final String TAG_BUYSELL = "buysell";
private static final String TAG_TRADESELL = "tradesell";
private static final String TAG_TARGET = "target";
private static final String TAG_STOPLOSS = "stoploss";
private static final String TAG_STATUS = "status";
JSONArray matchFixture = null;
ArrayList<HashMap<String, String>> matchFixtureList = new ArrayList<HashMap<String, String>>();
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_bank__details,
container, false);
new GetFixture().execute();
return rootView;
}
private class GetFixture extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... arg) {
ServiceHandler serviceClient = new ServiceHandler();
Log.d("url: ", "> " + URL_ITEMS);
String json = serviceClient.makeServiceCall(URL_ITEMS,
ServiceHandler.GET);
// print the json response in the log
Log.d("Get match fixture response: ", "> " + json);
if (json != null) {
try {
Log.d("try", "in the try");
JSONObject jsonObj = new JSONObject(json);
Log.d("jsonObject", "new json Object");
// Getting JSON Array node
matchFixture = jsonObj.getJSONArray(TAG_COMMODITIES);
Log.d("json aray", "user point array");
int len = matchFixture.length();
Log.d("len", "get array length");
for (int i = 0; i < matchFixture.length(); i++) {
JSONObject c = matchFixture.getJSONObject(i);
String Script = c.getString(TAG_SCRIPT);
Log.d("Script", Script);
String BuySell = c.getString(TAG_BUYSELL);
Log.d("BuySell", BuySell);
String TradeSell = c.getString(TAG_TRADESELL);
Log.d("TradeSell", TradeSell);
String Target = c.getString(TAG_TARGET);
Log.d("Target", Target);
String StopLoss = c.getString(TAG_STOPLOSS);
Log.d("StopLoss", StopLoss);
String Status = c.getString(TAG_STATUS);
Log.d("Status", Status);
// hashmap for single match
HashMap<String, String> matchFixture = new HashMap<String, String>();
// adding each child node to HashMap key => value
matchFixture.put(TAG_SCRIPT, Script);
matchFixture.put(TAG_BUYSELL, BuySell);
matchFixture.put(TAG_TRADESELL, TradeSell);
matchFixture.put(TAG_TARGET, Target);
matchFixture.put(TAG_STOPLOSS, StopLoss);
matchFixture.put(TAG_STATUS, Status);
matchFixtureList.add(matchFixture);
}
} catch (JSONException e) {
Log.d("catch", "in the catch");
e.printStackTrace();
}
} else {
Log.e("JSON Data", "Didn't receive any data from server!");
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
ListAdapter adapter = new SimpleAdapter(Commodities.this,
matchFixtureList, R.layout.list_item, new String[] {
TAG_SCRIPT, TAG_BUYSELL, TAG_TRADESELL, TAG_TARGET,
TAG_STOPLOSS, TAG_STATUS }, new int[] {
R.id.Script, R.id.BuySell, R.id.TradeSell,
R.id.Target, R.id.StopLoss, R.id.Status });
setListAdapter(adapter);
}
}
}
1 个解决方案
#1
Since Commodities is a ListFragment, you can't use this as a Context.
由于Commodities是ListFragment,因此您不能将其用作Context。
Try using Commodities.this.getActivity() instead of Commodities.this
尝试使用Commodities.this.getActivity()而不是Commodities.this
ListAdapter adapter = new SimpleAdapter(Commodities.this.getActivity(),
matchFixtureList, R.layout.list_item, new String[] {
TAG_SCRIPT, TAG_BUYSELL, TAG_TRADESELL, TAG_TARGET,
TAG_STOPLOSS, TAG_STATUS }, new int[] {
R.id.Script, R.id.BuySell, R.id.TradeSell,
R.id.Target, R.id.StopLoss, R.id.Status });
The Context that you need here is the Activity that contains this ListFragment.
这里需要的Context是包含此ListFragment的Activity。
From the documentation, the first parameter of the constructor is:
从文档中,构造函数的第一个参数是:
context The context where the View associated with this SimpleAdapter is running
context与此SimpleAdapter关联的View正在运行的上下文
Another thing to note is that you will need to use Commodities.this when you call setListAdapter():
另外需要注意的是,在调用setListAdapter()时需要使用Commodities.this:
//setListAdapter(adapter); //won't work
Commodities.this.setListAdapter(adapter); //use this instead
This is because setListAdapter() is a method of ListFragment here, see documentation.
这是因为setListAdapter()是ListFragment的一个方法,请参阅文档。
#1
Since Commodities is a ListFragment, you can't use this as a Context.
由于Commodities是ListFragment,因此您不能将其用作Context。
Try using Commodities.this.getActivity() instead of Commodities.this
尝试使用Commodities.this.getActivity()而不是Commodities.this
ListAdapter adapter = new SimpleAdapter(Commodities.this.getActivity(),
matchFixtureList, R.layout.list_item, new String[] {
TAG_SCRIPT, TAG_BUYSELL, TAG_TRADESELL, TAG_TARGET,
TAG_STOPLOSS, TAG_STATUS }, new int[] {
R.id.Script, R.id.BuySell, R.id.TradeSell,
R.id.Target, R.id.StopLoss, R.id.Status });
The Context that you need here is the Activity that contains this ListFragment.
这里需要的Context是包含此ListFragment的Activity。
From the documentation, the first parameter of the constructor is:
从文档中,构造函数的第一个参数是:
context The context where the View associated with this SimpleAdapter is running
context与此SimpleAdapter关联的View正在运行的上下文
Another thing to note is that you will need to use Commodities.this when you call setListAdapter():
另外需要注意的是,在调用setListAdapter()时需要使用Commodities.this:
//setListAdapter(adapter); //won't work
Commodities.this.setListAdapter(adapter); //use this instead
This is because setListAdapter() is a method of ListFragment here, see documentation.
这是因为setListAdapter()是ListFragment的一个方法,请参阅文档。