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テキストを設定しながら、私はヌル点の例外を取得しています上の「空android.widget.TextView.setText（java.lang.CharSequence）」仮想メソッドを呼び出そうと（RecyclerViewは）.. nullオブジェクト参照
リサイクルビューのための私の断片
public class Product_Manual_Frag extends Fragment implements View.OnClickListener {
//Database
DBHelper db;
Cursor myCursor = null;
View rootView;
// Cursor myCursor = null;
List<RecyclerModel> data = fill_with_data();
Pos_Ability_Activity main_Activity;
public Product_Manual_Frag() {
// Required empty public constructor
}
@Override
public void onClick(View v) {
}
private List<RecyclerModel> fill_with_data() {
List<RecyclerModel> data=new ArrayList<>();
data.add(new RecyclerModel("Item1","10,000","2000","$"));
data.add(new RecyclerModel("Item1","10,000","2000","$"));
data.add(new RecyclerModel("Item1","10,000","2000","$"));
data.add(new RecyclerModel("Item1","10,000","2000","$"));
return data;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_poduct_manual, container, false);
RecyclerView recycler=(RecyclerView)rootView.findViewById(R.id.my_recycler_view);
RecyclerViewAdapter adapter=new RecyclerViewAdapter(data,getActivity());
recycler.setLayoutManager(new LinearLayoutManager(getContext()));
recycler.setAdapter(adapter);
// Inflate the layout for this fragment
return rootView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
@Override
public void onDetach() {
super.onDetach();
}
}
私Recycleradapter
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.myViewholder> {
List<RecyclerModel> data = Collections.emptyList();
private LayoutInflater inflater;
private Context context;
public RecyclerViewAdapter(List<RecyclerModel> list, Context context) {
this.context = context;
inflater = LayoutInflater.from(context);
this.data = list;
}
// Usually involves inflating a layout from XML and returning the holder
@Override
public myViewholder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.nav_drawer_row, parent, false);
RecyclerViewAdapter.myViewholder holder = new RecyclerViewAdapter.myViewholder(view);
return holder;
}
public void delete(int position) {
data.remove(position);
notifyItemRemoved(position);
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public void onBindViewHolder(myViewholder holder, int position) {
holder.txtPname.setText(data.get(position).Itemname); //Getting exception here
}
@Override
public int getItemCount() {
return data.size();
}
class myViewholder extends RecyclerView.ViewHolder {
RelativeLayout rl;
TextView txtPname, txtorgprice, txtdisprice, txtcursym;
CheckBox chkbx;
public myViewholder(View itemView) {
super(itemView);
rl = (RelativeLayout) itemView.findViewById(R.id.relativeLayout1);
txtPname = (TextView) itemView.findViewById(R.id.txtPName);
txtorgprice = (TextView) itemView.findViewById(R.id.txtPOrgPrice);
txtdisprice = (TextView) itemView.findViewById(R.id.txtPDisPrice);
txtcursym = (TextView) itemView.findViewById(R.id.lblCurSym);
chkbx = (CheckBox) itemView.findViewById(R.id.chkBox);
}
}
私のモデルクラス
public class RecyclerModel {
public String Itemname;
public String ItempOrigrice;
public String ItemdiscPrice;
public String curSym;
public RecyclerModel(String name, String orgprice, String DiscPrice, String currency) {
this.curSym = currency;
this.Itemname = name;
this.ItempOrigrice = orgprice;
this.ItemdiscPrice = DiscPrice;
}
私のフラグメントのxml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/app_bg">
<android.support.v7.widget.RecyclerView
android:id="@+id/my_recycler_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical" />
</RelativeLayout>
私row_xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relativeLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/imgIcon"
android:background="@drawable/cashback"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true" />
<TextView
android:id="@+id/txtPName"
android:text="Item name sample"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/imgIcon" />
<TextView
android:id="@+id/txtPOrgPrice"
android:text="10,000 "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txtPName"
android:layout_toRightOf="@+id/imgIcon" />
<TextView
android:id="@+id/lblCurSym"
android:text="$"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txtPOrgPrice"
android:layout_toRightOf="@+id/imgIcon" />
<TextView
android:id="@+id/txtPDisPrice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/txtPOrgPrice"
android:layout_toRightOf="@+id/lblCurSym"
android:paddingBottom="2dp"
android:paddingRight="2dp"
android:paddingTop="2dp"
android:text="2,000 "
android:textColor="#83410e"
android:textSize="14sp" />
<CheckBox
android:id="@+id/chkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true" />
</RelativeLayout>
私はsomething.?Pleaseポイントに私がやっているのミスをしないのです。
チェックを使用する方法についてのより多くのアイデアを取得するためにいくつかの研究を行うnullポインタexecption
を取得するためにバインドされています。 –