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The source code is released under:
GNU General Public License
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package me.sh.ygntraffic.fragment; /* w w w . java 2 s .co m*/ import android.app.Activity; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.DialogInterface; import android.os.Bundle; import android.support.v4.widget.SwipeRefreshLayout; import android.util.Log; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListAdapter; import android.widget.TextView; import android.widget.Toast; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.JsonArray; import com.google.gson.JsonObject; import com.google.gson.JsonParser; import com.koushikdutta.async.future.FutureCallback; import com.koushikdutta.ion.Ion; import java.util.ArrayList; import butterknife.ButterKnife; import butterknife.InjectView; import butterknife.OnClick; import me.sh.ygntraffic.R; import me.sh.ygntraffic.adapter.PlaceAdapter; import me.sh.ygntraffic.base.BaseFragment; import me.sh.ygntraffic.model.Place; import me.sh.ygntraffic.util.Constants; import me.sh.ygntraffic.util.NetUtil; public class TrafficFragment extends BaseFragment implements AbsListView.OnItemClickListener, SwipeRefreshLayout.OnRefreshListener { private OnPlaceClickListener mListener; private ProgressDialog mDialog; private String mPlace; /** * The fragment's ListView/GridView. */ @InjectView(android.R.id.list) AbsListView mListView; @InjectView(android.R.id.empty) TextView mEmptyView; @InjectView(R.id.swipe_refresh) SwipeRefreshLayout mSwipeRefreshLayout; /** * The Adapter which will be used to populate the ListView/GridView with * Views. */ private PlaceAdapter mAdapter; private ArrayList<Place> mPlaces = new ArrayList<Place>(); public static TrafficFragment newInstance() { TrafficFragment fragment = new TrafficFragment(); return fragment; } /** * Mandatory empty constructor for the fragment manager to instantiate the * fragment (e.g. upon screen orientation changes). */ public TrafficFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_place, container, false); ButterKnife.inject(this, view); mDialog = new ProgressDialog(getActivity()); mSwipeRefreshLayout.setOnRefreshListener(this); mSwipeRefreshLayout.setColorScheme(R.color.yellow, R.color.white, R.color.yellow, R.color.white); // Set OnItemClickListener so we can be notified on item clicks mListView.setOnItemClickListener(this); // Set OnScrollListener to fix ListView scroll up conflict with SwipeRefresh mListView.setOnScrollListener(new AbsListView.OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { int topRowVerticalPosition = (mListView == null || mListView.getChildCount() == 0) ? 0 : mListView.getChildAt(0).getTop(); mSwipeRefreshLayout.setEnabled(topRowVerticalPosition >= 0); // if first row shown != top most position, disable SwipeRefreshLayout } }); setHasOptionsMenu(true); return view; } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); onRefresh(); } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mListener = (OnPlaceClickListener) activity; } catch (ClassCastException e) { throw new ClassCastException( activity.toString() + " must implement OnFragmentInteractionListener"); } } @Override public void onDetach() { super.onDetach(); mListener = null; } private void getAllTraffic() { Ion.with(getActivity()) .load(Constants.ALL_TRAFFIC) .setLogging("ION", Log.DEBUG) .asString() .setCallback(new FutureCallback<String>() { @Override public void onCompleted(Exception e, String result) { mSwipeRefreshLayout.setRefreshing(false); if (result == null || e != null) { mPlaces.clear(); setEmptyText(getText(R.string.error_internet)); } else if (result.equalsIgnoreCase("{\"empty\":true}")) { mPlaces.clear(); setEmptyText(getText(R.string.error_empty)); } else { mPlaces.clear(); JsonParser parser = new JsonParser(); JsonArray jArray = (JsonArray) parser.parse(result); Gson gson = new GsonBuilder().create(); for (int i = 0; i < jArray.size(); i++) { JsonObject obj = jArray.get(i).getAsJsonObject(); Place item = gson.fromJson(obj, Place.class); mPlaces.add(item); } mAdapter = new PlaceAdapter(getActivity(), mPlaces); // Set the adapter ((AdapterView<ListAdapter>) mListView).setAdapter(mAdapter); } } }); } @Override public void onRefresh() { if (NetUtil.isOnline(context)) { mSwipeRefreshLayout.setRefreshing(true); getAllTraffic(); } else { setEmptyText(getString(R.string.error_internet)); } } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if (null != mListener) { // Notify the active callbacks interface (the activity, if the // fragment is attached to one) that an item has been selected. mListener.onPlaceClick(mPlaces.get(position)); } } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_refresh) { if (NetUtil.isOnline(getActivity().getApplicationContext())) { onRefresh(); mEmptyView.setVisibility(View.GONE); } else { setEmptyText(getString(R.string.error_internet)); } } return super.onOptionsItemSelected(item); } /** * TODO Need to refactor this Reporting part */ @OnClick(R.id.btn_report) public void reportTraffic() { mDialog.setMessage("Loading places..."); mDialog.show(); Ion.with(getActivity()) .load(Constants.PLACES) .setLogging("ION", Log.DEBUG) .asString() .setCallback(new FutureCallback<String>() { @Override public void onCompleted(Exception e, String result) { mDialog.dismiss(); Log.e("", "Result: " + result); if (result == null || e != null) { setEmptyText(getText(R.string.error_internet)); } else { JsonParser parser = new JsonParser(); JsonArray array = (JsonArray) parser.parse(result); String[] places = new String[array.size()]; for (int i = 0; i < array.size(); i++) { places[i] = array.get(i).getAsString(); } createPlaceDialog(places); } } }); } private void createPlaceDialog(final String[] places) { final AlertDialog.Builder builderSingle = new AlertDialog.Builder(getActivity()); builderSingle.setTitle("Choose place to report"); final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(context, R.layout.dialog_list_item, places); builderSingle.setNegativeButton("Dismiss", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } } ); builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { mPlace = places[which]; createStatusDialog(places[which]); } } ); builderSingle.show(); } private void createStatusDialog(String place) { final AlertDialog.Builder builderSingle = new AlertDialog.Builder(getActivity()); builderSingle.setTitle(place); final String[] status = getResources().getStringArray(R.array.report_status); final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(context, R.layout.dialog_list_item, status); builderSingle.setNegativeButton("Dismiss", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } } ); builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (which == 0) { createRemarkDialog("3", status[which]); } else if (which == 1) { createRemarkDialog("2", status[which]); } else if (which == 2) { reportToServer("1", ""); } } } ); builderSingle.show(); } private void createRemarkDialog(final String id, String title) { final AlertDialog.Builder builderSingle = new AlertDialog.Builder(getActivity()); builderSingle.setTitle(title); String[] remark = getResources().getStringArray(R.array.report_remark); final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(context, R.layout.dialog_list_item, remark); builderSingle.setNegativeButton("Dismiss", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } } ); builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { int remark = which + 1; reportToServer(id, remark + ""); } } ); builderSingle.show(); } private void reportToServer(final String status, String remark) { if (NetUtil.isOnline(context)) { mDialog.setMessage(getString(R.string.loading_report)); mDialog.show(); Ion.with(context) .load(Constants.REPORT + mPlace + "&s=" + status + "&c=" + remark) .setLogging("ION-ReportTraffic", Log.DEBUG) .asString() .setCallback(new FutureCallback<String>() { @Override public void onCompleted(Exception e, String result) { mDialog.dismiss(); Log.d("", "Result: " + result); if (result.equalsIgnoreCase("") || result == null) { mDialog.setMessage(getString(R.string.error_reprot)); mDialog.show(); mDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { getActivity().finish(); } }); } else if (result.equalsIgnoreCase("{err: 3, msg: \"Bad request!\"}")) { mDialog.setMessage(getString(R.string.error_reprot)); mDialog.show(); mDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { getActivity().finish(); } }); } else { JsonParser parser = new JsonParser(); JsonObject jsonObject = (JsonObject) parser.parse(result); Toast.makeText(context, "Reported: " + jsonObject.get("remark"), Toast.LENGTH_SHORT).show(); onRefresh(); } } }); } else { Toast.makeText(context, "Please check your internet connection.", Toast.LENGTH_SHORT).show(); } } /** * The default content for this Fragment has a TextView that is shown when * the list is empty. This method is called to change the error text. */ public void setEmptyText(CharSequence emptyText) { mEmptyView.setVisibility(View.VISIBLE); mEmptyView.setText(emptyText); } /** * This interface must be implemented by activities that contain this * fragment to allow an interaction in this fragment to be communicated * to the activity and potentially other fragments contained in that * activity. * <p/> * See the Android Training lesson <a href= * "http://developer.android.com/training/basics/fragments/communicating.html" * >Communicating with Other Fragments</a> for more information. */ public interface OnPlaceClickListener { public void onPlaceClick(Place place); } }