Question

我是android编码的新手，我在这里和YouTube上都尝试了所有可能的解决方案，但仍然很挣扎。我只想在按一下按钮时将片段对话框中的数据与另一个片段进行匹配。我们正在做一个简单的项目。：）

这是我们想要做的。请注意以下链接： https://imgur.com/tGdWcfq

我们要在单击“设置参数”按钮后更改与对话框匹配的名称

这是我们在网上发现的，不同之处在于我们有一个对话框按钮 https://www.youtube.com/watch?v=ZXoGG2XTjzU https://www.youtube.com/watch?v=69C1ljfDvl0

这里是代码 RecyclerViewAdapter.java

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.MyViewHolder> {

Context mContext;
List<specieList> mData;
Dialog myDialog;

public RecyclerViewAdapter(Context mContext, List<specieList> mData) {
    this.mContext = mContext;
    this.mData = mData;
}


@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    View v;
    Button b;

    v = LayoutInflater.from(mContext).inflate(R.layout.row,parent,false);
    final MyViewHolder vHolder = new MyViewHolder(v);

    myDialog = new Dialog(mContext);
    myDialog.setContentView(R.layout.fishpop);
    myDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
    b = myDialog.findViewById(R.id.toasted);
    b.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            TextView toastfish = (TextView) myDialog.findViewById(R.id.dialog_fish_id);
            Toast.makeText(mContext,"Parameters are now set for " + toastfish.getText().toString(), Toast.LENGTH_SHORT).show();
            // here upon clicking this button click we want to match the details in this dialog to another tab. Kindly watch the link above :)
        }
    });



    vHolder.fish_choices.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            TextView dialog_fish = (TextView) myDialog.findViewById(R.id.dialog_fish_id);
            TextView dialog_sciname = (TextView) myDialog.findViewById(R.id.dialog_sciname_id);
            ImageView dialog_image = (ImageView) myDialog.findViewById(R.id.dialog_image_id);
            dialog_fish.setText(mData.get(vHolder.getAdapterPosition()).getFish());
            dialog_sciname.setText(mData.get(vHolder.getAdapterPosition()).getSciname());
            dialog_image.setImageResource(mData.get(vHolder.getAdapterPosition()).getImage());
            myDialog.show();
        }
    });
    return vHolder;
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {

    holder.tv_fish.setText(mData.get(position).getFish());
    holder.tv_sciname.setText(mData.get(position).getSciname());
    holder.img.setImageResource(mData.get(position).getImage());

}


@Override
public int getItemCount() {
    return mData.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder {

    private LinearLayout fish_choices;
    private TextView tv_fish;
    private TextView tv_sciname;
    private ImageView img;

    public MyViewHolder(View itemView) {
        super(itemView);
            fish_choices = (LinearLayout) itemView.findViewById(R.id.choices);
            tv_fish = (TextView) itemView.findViewById(R.id.textView1);
            tv_sciname = (TextView) itemView.findViewById(R.id.textView2);
            img = (ImageView) itemView.findViewById(R.id.image);

    }
}

}

“概述”标签的代码（我们要匹配此标签的内容）

public class overview extends Fragment {

View v2;


// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;

private OnFragmentInteractionListener mListener;

public overview() {
    // Required empty public constructor
}

/**
 * Use this factory method to create a new instance of
 * this fragment using the provided parameters.
 *
 * @param param1 Parameter 1.
 * @param param2 Parameter 2.
 * @return A new instance of fragment overview.
 */
// TODO: Rename and change types and number of parameters
public static overview newInstance(String param1, String param2) {
    overview fragment = new overview();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);
    }
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    v2 = inflater.inflate(R.layout.fragment_overview, container, false);
    Calendar calendar = Calendar.getInstance();
    SimpleDateFormat time = new SimpleDateFormat("HH:mm:ss");
    String currentDate = DateFormat.getDateInstance(DateFormat.FULL).format(calendar.getTime());
    String currentTime = time.format(calendar.getTime());


    TextView textViewDate =(TextView) v2.findViewById(R.id.date_id);
    textViewDate.setText(currentDate);
    TextView textViewTime =(TextView) v2.findViewById(R.id.time_id);
    textViewTime.setText(currentTime);



    return v2;
}

// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
    if (mListener != null) {
        mListener.onFragmentInteraction(uri);
    }
}

@Override
public void onAttach(Context context) {
    super.onAttach(context);
    if (context instanceof OnFragmentInteractionListener) {
        mListener = (OnFragmentInteractionListener) context;
    } else {
        throw new RuntimeException(context.toString()
                + " must implement OnFragmentInteractionListener");
    }
}

@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}

public interface OnFragmentInteractionListener {
    // TODO: Update argument type and name
    void onFragmentInteraction(Uri uri);
}

}

“币种”标签的代码（我们要引用此标签）

public class specie extends Fragment {

View v;

private RecyclerView myrecyclerview;
private List<specieList> lstspecie;


// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;

private OnFragmentInteractionListener mListener;



public specie() {
    // Required empty public constructor
}

/**
 * Use this factory method to create a new instance of
 * this fragment using the provided parameters.
 *
 * @param param1 Parameter 1.
 * @param param2 Parameter 2.
 * @return A new instance of fragment specie.
 */
// TODO: Rename and change types and number of parameters
public static specie newInstance(String param1, String param2) {
    specie fragment = new specie();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    lstspecie = new ArrayList<>();
    lstspecie.add(new specieList("Nile Tilapia", "Oreochromis niloticus", R.drawable.tilapia));
    lstspecie.add(new specieList("Ayungin (Silver Perch)", "Bidyanus bidyanus", R.drawable.ayungin));
    lstspecie.add(new specieList("Sugpo (Tiger Prawn)", "Penaeus monodon", R.drawable.hipon));
    lstspecie.add(new specieList("Hito (Catfish)", "Siluriformes", R.drawable.hito));
    lstspecie.add(new specieList("Giant Gourami", "Osphronemus goramy", R.drawable.giant));
    lstspecie.add(new specieList("Bangus (Milkfish)", "Chanos chanos", R.drawable.bangus));


    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);

    }
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    v = inflater.inflate(R.layout.fragment_specie, container, false);
    myrecyclerview = (RecyclerView)v.findViewById(R.id.specie_recycleview);
    RecyclerViewAdapter recyclerAdapter = new RecyclerViewAdapter(getContext(), lstspecie);
    myrecyclerview.setLayoutManager(new LinearLayoutManager(getActivity()));
    myrecyclerview.setAdapter(recyclerAdapter);
    return v;
}


// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
    if (mListener != null) {
        mListener.onFragmentInteraction(uri);
    }
}

@Override
public void onAttach(Context context) {
    super.onAttach(context);
    if (context instanceof OnFragmentInteractionListener) {
        mListener = (OnFragmentInteractionListener) context;
    } else {
        throw new RuntimeException(context.toString()
                + " must implement OnFragmentInteractionListener");
    }
}

@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}

/**
 * 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 OnFragmentInteractionListener {
    // TODO: Update argument type and name
    void onFragmentInteraction(Uri uri);
}

}

谢谢！

Answer 1

在单击按钮时调用以下方法。

     public void replaceFragment(Fragment fragment) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = 
        fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.frameContainer, fragment);
        fragmentTransaction.addToBackStack(fragment.toString());
        fragmentTransaction.commit();
    }

在您的适配器之类的构造函数中

传递 frameContainer 。

new RecyclerViewAdapter(context, list, R.id.frameContainer);

Answer 2

使用面向对象的方法

您可以在活动中编写一个函数，并可以从中调用一个片段的方法，因为像这样初始化它时，您在活动中有片段的引用

在您的活动中

   class yourActivity ... {

       // your other methods

      public void callFragmentMethod(String params) {

           // here call your fragment's method
           fragment.method(params);
      }

   }

现在在您的片段中

   class yourFragment ... {

       // your other methods

      public void method(String params) {

           // here call your fragment's method
           here do whatever you want to do it with params
      }

   }

现在，您可以根据需要从另一个片段或适配器调用Activity的方法

您可以通过Fragment调用

((yourActivity)getActivity()).callFragmentMethod(params);

从适配器

((yourActivity)context).callFragmentMethod(params);

java-单击按钮后如何将对话框的详细信息从RecyclerViewAdapter匹配到另一个片段

2 个答案: