I am creating an app that has markers on a map representing bus stops. When the user clicks on the bus stop, a new fragment is shown with few details regarding buses at that stop.
It was working until I made some changes, a couple of minutes before. And now when you click on the bus stop, it just takes me to a blank fragment (not show my XML file layout anymore).
I tried to undo my new changes and compare it to what I had, when it was working fine but still no luck. I also tried cleaning and rebuilding the build but still works nothing. I'd appreciate any help I can get on this!
public class RealtimeFragment extends Fragment {
private int stopId;
//int stopId= 1354;
private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;
private ArrayList<Bus> results = new ArrayList<>();
private SwipeRefreshLayout swipeRefreshLayout;
private String endpoint;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState){
View view = inflater.inflate(R.layout.fragment_realtime, container, false);
recyclerView = view.findViewById(R.id.bus_realtime_view);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(layoutManager);
System.out.println("made it to view");
endpoint = getRealtimeInfo(stopId);
getData();
swipeRefreshLayout = view.findViewById(R.id.card_container_layout);
swipeRefreshLayout.setOnRefreshListener(this::getData);
return view;
}
public void setStopId(int id) {
this.stopId = id;
}
public static String getRealtimeInfo(int stopId) {
return "api link";
}
public void getData(){
RestClient.get(endpoint, new BaseJsonHttpResponseHandler<JSONArray>(){
@Override
public void onSuccess(int statusCode, Header[] headers, String rawJsonResponse, JSONArray response){
results.clear();
for(int i=0; i<response.length(); i++) {
try {
JSONObject o = response.getJSONObject(i);
Bus bus = new Bus(o);
results.add(bus);
} catch (JSONException e) {
e.printStackTrace();
}
}
adapter = new BusAdapter(getActivity(), results);
recyclerView.setAdapter(adapter);
swipeRefreshLayout.setRefreshing(false);
}
@Override
public void onFailure (int statusCode, Header[] headers, Throwable throwable, String rawJsonData, JSONArray errorResponse){
swipeRefreshLayout.setRefreshing(false);
}
@Override
protected JSONArray parseResponse(String rawJsonData, boolean isFailure) throws Throwable{
return new JSONObject(rawJsonData).getJSONArray("results");
}
});
}
}
Adapter Class:
public class BusAdapter extends RecyclerView.Adapter<BusAdapter.ViewHolder>{
private List<Bus> dataset;
private Context context;
private static OnItemClickListener onItemClickListener;
public BusAdapter(Context context) {
this.context=context;
}
public BusAdapter() {
}
public void setOnItemClickListener(BusAdapter.OnItemClickListener onItemClickListener) {
}
public interface OnItemClickListener{
void onItemClick(View view, int pos);
}
public static class ViewHolder extends RecyclerView.ViewHolder {
TextView timeTextView, destinationTextView, routeTextView, minsTextView;
ViewHolder(View v) {
super(v);
this.timeTextView = v.findViewById(R.id.due);
this.destinationTextView = v.findViewById(R.id.terminus);
this.routeTextView = v.findViewById(R.id.route);
this.minsTextView = v.findViewById(R.id.due_mins_text);
v.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//String test = routeTextView.getText().toString();
Intent intent = new Intent(v.getContext(),BusTrackerActivity.class);
v.getContext().startActivity(intent);
}
});
}
}
public BusAdapter(Context context, ArrayList<Bus> dataset){
this.context = context;
this.dataset = dataset;
}
@Override
public BusAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType){
View view = LayoutInflater.from(context).inflate(R.layout.bus_card, parent, false);
return new BusAdapter.ViewHolder(view);
}
@Override
public void onBindViewHolder(BusAdapter.ViewHolder holder, int position){
Bus bus = dataset.get(position);
holder.timeTextView.setText(String.valueOf(bus.getMinsUntilBus()));
holder.destinationTextView.setText(String.valueOf(bus.getDestination()));
holder.routeTextView.setText(String.valueOf(bus.getRoute()));
holder.minsTextView.setText(bus.getMinsUntilBus()==1? "min" : "mins");
}
@Override
public int getItemCount(){
return dataset.size();
}
}
XML for fragment
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools">
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_container_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="stuff here">
<android.support.v7.widget.RecyclerView
android:id="@+id/bus_realtime_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
Card View Holder XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="96dp"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="2dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="16dp"
android:elevation="6dp">
<LinearLayout
android:id="@+id/search_term_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5">
<TextView
android:id="@+id/due"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Time"
android:textSize="24sp" />
<TextView
android:id="@+id/due_mins_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:text="mins" />
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1">
<TextView
android:id="@+id/terminus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Terminus" />
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5">
<TextView
android:id="@+id/route"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Route"
android:textSize="18sp" />
</RelativeLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
No error messages, just no UI! It even prints the S.O.P in the terminal that I code in the onCreate method.
答案 0 :(得分：0)
偶然（而且非常愚蠢）删除了我将上一个片段中的stopId传递到我的API密钥中的位置。