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Ich versuche Bilder von URL mit Volley zu bekommen, aber es funktioniert nicht zum Zeitpunkt des Ladens von Daten App stürzt ab ... aber wenn ich den ImageLoader entfernen, wird eThading korrekt wie Textdaten geladen. ..Recyclerview lädt keine Bilder
hier ist meine Adapterklasse
public class RecyclerViewDataAdapter extends RecyclerView.Adapter<RecyclerViewDataAdapter.ViewHolder> {
private Pants context;
public ImageLoader mImageLoader;
//List of superHeroes
List<ListOfData> superHeroes;
public RecyclerViewDataAdapter(List<ListOfData> superHeroes, Pants context){
super();
//Getting all the superheroes
this.superHeroes = superHeroes;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.recyclerview_row, parent, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
ListOfData superHero = superHeroes.get(position);
mImageLoader = MyApplication.getInstance(context).getImageLoader();
mImageLoader.get(superHero.getImageUrl(), ImageLoader.getImageListener(holder.imageView1, R.mipmap.ic_launcher, android.R.drawable.ic_dialog_alert));
holder.imageView1.setImageUrl(superHero.getImageUrl(), mImageLoader);
holder.textViewName1.setText(superHero.getName());
//holder.textViewRank.setText(String.valueOf(superHero.getRank()));
//holder.textViewRealName.setText(superHero.getRealName());
//holder.textViewCreatedBy.setText(superHero.getCreatedBy());
//holder.textViewFirstAppearance.setText(superHero.getFirstAppearance());
String powers = "";
/* for(int i = 0; i<superHero.getPowers().size(); i++){
powers+= superHero.getPowers().get(i);
}*/
//holder.textViewPowers.setText(powers);
}
@Override
public int getItemCount() {
return superHeroes.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public NetworkImageView imageView1;
public NetworkImageView imageView2;
public TextView textViewName1;
public TextView textViewName2;
public TextView textViewRank;
public TextView textViewRealName;
public TextView textViewCreatedBy;
public TextView textViewFirstAppearance;
public TextView textViewPowers;
public ViewHolder(View itemView) {
super(itemView);
imageView1 = (NetworkImageView) itemView.findViewById(R.id.thumbnail);
imageView2 = (NetworkImageView) itemView.findViewById(R.id.thumbnail2);
textViewName1 = (TextView) itemView.findViewById(R.id.category_title_one);
textViewName2 = (TextView) itemView.findViewById(R.id.category_title_two);
/* textViewRank= (TextView) itemView.findViewById(R.id.textViewRank);
textViewRealName= (TextView) itemView.findViewById(R.id.textViewRealName);
textViewCreatedBy= (TextView) itemView.findViewById(R.id.textViewCreatedBy);
textViewFirstAppearance= (TextView) itemView.findViewById(R.id.textViewFirstAppearance);
textViewPowers= (TextView) itemView.findViewById(R.id.textViewPowers);
*/
}
}
}
und das JSON Teil
public class Pants extends Fragment {
private Pants context;
//Creating a List of superheroes
public List<ListOfData> listSuperHeroes;
//Creating Views
private RecyclerView recyclerView;
private RecyclerView.LayoutManager layoutManager;
private RecyclerView.Adapter adapter;
public Pants() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.tshirts_pants_shirts, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
layoutManager = new LinearLayoutManager(getActivity().getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
//Calling method to get data
getData();
return view;
}
private void getData() {
//Showing a progress dialog
final ProgressDialog loading = ProgressDialog.show(getActivity(), "Loading Data", "Please wait...", false, false);
//Creating a json array request
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(ProductConfig.DATA_URL,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
//Dismissing progress dialog
loading.dismiss();
//calling method to parse json array
parseData(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
//Creating request queue
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
//Adding request to the queue
requestQueue.add(jsonArrayRequest);
}
//This method will parse json data
private void parseData(JSONArray array) {
listSuperHeroes = new ArrayList<>();
for (int i = 0; i < array.length(); i++) {
ListOfData superHero = new ListOfData();
JSONObject json = null;
try {
json = array.getJSONObject(i);
superHero.setImageUrl(json.getString(ProductConfig.TAG_IMAGE_URL));
superHero.setName(json.getString(ProductConfig.TAG_NAME));
//superHero.setRank(json.getInt(ProductConfig.TAG_RANK));
//superHero.setRealName(json.getString(ProductConfig.TAG_REAL_NAME));
//superHero.setCreatedBy(json.getString(ProductConfig.TAG_CREATED_BY));
//superHero.setFirstAppearance(json.getString(ProductConfig.TAG_FIRST_APPEARANCE));
ArrayList<String> powers = new ArrayList<String>();
JSONArray jsonArray = json.getJSONArray(ProductConfig.TAG_POWERS);
for (int j = 0; j < jsonArray.length(); j++) {
powers.add(((String) jsonArray.get(j)) + "\n");
}
superHero.setPowers(powers);
} catch (JSONException e) {
e.printStackTrace();
}
listSuperHeroes.add(superHero);
}
//Finally initializing our adapter
adapter = new RecyclerViewDataAdapter(listSuperHeroes, this);
//Adding adapter to recyclerview
recyclerView.setAdapter(adapter);
}
}
hier Fehler, der
Process: com.example.aninesoft.meltwishbeta, PID: 23012
java.lang.NullPointerException
at com.aninesoft.meltwishbeta.RecyclerViewDataAdapter.onBindViewHolder(RecyclerViewDataAdapter.java:45)
at com.aninesoft.meltwishbeta.RecyclerViewDataAdapter.onBindViewHolder(RecyclerViewDataAdapter.java:19)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5277)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:5310)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4568)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4461)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1962)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1371)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1334)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:563)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2847)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3145)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1627)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.support.design.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1034)
at android.support.design.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:744)
at android.support.design.widget.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:42)
at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:1180)
at android.support.design.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:757)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:437)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14832)
at android.view.ViewGroup.layout(ViewGroup.java:4640)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1996)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1753)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5739)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer
Welches ist die Leitung 45 in Ihrem Adapter? – varunkr
Das ist mImageLoader = MyApplication.getInstance (Kontext) .getImageLoader(); –
Was ist MyApplication? – varunkr