我正在尝试从服务器获得响应，但它只显示我不支持的吐司服务器。我不明白这里发生了什么。我已经将api分配给我在另一个类中声明的静态变量。
代码：
public class SpeakersFrag extends Fragment {
private List<SpeakersBean> dataset;
// private Context context;
private ProgressDialog progressDialog;
SessionContoller sessionContoller;
RecyclerView recyclerView;
public SpeakerAdapter speakerAdapter;
Context context;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View myview=inflater.inflate(R.layout.speakers,null);
this.context=getActivity(); //cmt ctx
this.sessionContoller=new SessionContoller(this.context);
RecyclerView recyclerView = (RecyclerView) myview.findViewById(R.id.Recycler_viewrest);
// List<String> dataSet=new ArrayList<>();
recyclerView.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this.context);
recyclerView.setLayoutManager(linearLayoutManager);
//linearLayoutManager.setOrientation;
recyclerView.setLayoutManager(linearLayoutManager);
if (AppStatus.getInstance(this.context).isOnline(this.context)) {
new GetSpeakerList().execute(new Void[0]);
} else if (this.sessionContoller.getSpeakerData() != null) {
setData(this.sessionContoller.getSpeakerData());
} else {
Dialog.noInternetAlertBox(this.context);
}
// new GetSpeakerList().execute(new Void[0]);
recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(this.context,new Listener()));
return myview;
}
class Listener implements RecyclerItemClickListener.ClickListener{
@Override
public void onItemClick(View view, int i) {
SpeakersBean speakersBean=SpeakersFrag.this.getSpeakerAdapter().getItem(i);
Intent in=new Intent(SpeakersFrag.this.context,SpeakerDetail.class);
in.putExtra("speaker", speakersBean);
startActivity(in);
}
}
class GetSpeakerList extends AsyncTask<Void, Void,String> {
ProgressDialog pd;
@Override
protected void onPreExecute() {
// pd = new ProgressDialog(getActivity()).show(getActivity(), "", "Loading...");
SpeakersFrag.this.progressDialog = new ProgressDialog(SpeakersFrag.this.context);
SpeakersFrag.this.progressDialog.setMessage("Loading...");
SpeakersFrag.this.progressDialog.setCancelable(false);
SpeakersFrag.this.progressDialog.show();
}
@Override
protected String doInBackground(Void... params) {
return SpeakersFrag.this.performPostCallback(Constants.Webservice.SPEAKER_API);
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (!result.equals(BuildConfig.FLAVOR))
{
try
{
JSONObject jsonObject = new JSONObject(result); // set ` *emphasized text*`status code to continue the webservice as define in constants
if (jsonObject.getString("status_code").equals("100") && jsonObject.getString("message").equalsIgnoreCase("Success"))
{
System.out.println("Speaker data with Json and gson Parsing");
sessionContoller = new SessionContoller(getContext());
JSONArray jsonArray = jsonObject.getJSONArray("items"); //items
SpeakersFrag.this.dataset = (List) new Gson().fromJson(jsonArray.toString()
, new TypeToken<List<SpeakersBean>>() {}.getType());
SpeakersFrag.this.speakerAdapter = new SpeakerAdapter(SpeakersFrag.this.context, SpeakersFrag.this.dataset);
SpeakersFrag.this.recyclerView.setAdapter(SpeakersFrag.this.speakerAdapter);
SpeakersFrag.this.sessionContoller.setSpeakerData(jsonArray.toString());
}
} catch (JSONException e)
{
Log.e("SpeakerFragment", e.toString(), e);
// e.printStackTrace();
}
}
else if (SpeakersFrag.this.sessionContoller.getSpeakerData() != null) {
SpeakersFrag.this.setData(SpeakersFrag.this.sessionContoller.getSpeakerData());
}else{
Toast.makeText(getActivity(),Constants.SERVER_ERROR,Toast.LENGTH_LONG).show();
}
SpeakersFrag.dismissDialog(SpeakersFrag.this.progressDialog);
}
}
private void setData(String speakerData){
JSONException e;
try {
JSONArray jsonSpeaker = new JSONArray(speakerData);
JSONArray jarray;
{
try {
this.dataset = (List) new Gson().fromJson(jsonSpeaker.toString(), new TypeToken<TypeToken<List<SpeakersBean>>>(){}.getType());
this.speakerAdapter = new SpeakerAdapter(SpeakersFrag.this.context, SpeakersFrag.this.dataset);
this.recyclerView.setAdapter(this.speakerAdapter); //add speakerfrag
jarray=jsonSpeaker;
// ().getType());
} catch (Exception e1) {
jarray = jsonSpeaker;
e1.printStackTrace();
}
}
}catch (JSONException e3) {
e=e3;
e.printStackTrace();
}
}
public String performPostCallback(String requestURL)
{
String response=BuildConfig.FLAVOR;
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
try {
//send post data request
HttpURLConnection connection=(HttpURLConnection) new URL(requestURL).openConnection();
connection.setReadTimeout(15000);
connection.setConnectTimeout(15000);
connection.setRequestMethod("POST");
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setReadTimeout(15000);
OutputStream outputStream=connection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8")); //UTF-8 encode the string into utf format
outputStream.flush(); //flushes the output stream and forces to any buffered device to be written out
outputStream.close(); //close pd
if (connection.getResponseCode() != ItemTouchHelper.Callback.DEFAULT_DRAG_ANIMATION_DURATION) {
return BuildConfig.FLAVOR;
}
//Read the server response
BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
while (true) {
String line = br.readLine(); //read server response
if (line == null) {
return response;
}
response = response + line; //Append response
System.out.println("Response request====>>>>>"+response); //response from server
}
} catch (Exception e) {
Log.e("SpeakerFragment", e.toString(), e);
return response;
}
}
public SpeakerAdapter getSpeakerAdapter(){
return this.speakerAdapter;
}
public static void dismissDialog(ProgressDialog pd) {
if (pd != null) {
try {
if (pd.isShowing()) {
pd.dismiss();
}
} catch (Exception e)
{
e.printStackTrace();
} catch (Throwable th){
th.printStackTrace();
}
}
}
----------
}
Blockquote
答案 0 :(得分：0)
我认为它从服务器端错误....
Toast.makeText(getActivity(),Constants.SERVER_ERROR,Toast.LENGTH_LONG).show();
此代码正常运行，这就是为什么它显示错误