Question

我是Android编程的新手，所以你能为我提供正确的代码。这是我的代码。数据来自sqlite。我的问题是。如何从recyclerview获取3 textview并在单击时将其传递给对话框？我终于制作了对话框，但我只能获得项目的位置，我想获得所有三个textview数据。请帮帮我。

FragmentMeal.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.i("Fragment Demo", "Fragment_One onCreate()");
}

VivzAdapter.java

package inncharge.poy.madrigal.innchargev1.fragments;


import android.app.Dialog;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.GestureDetector;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import inncharge.poy.madrigal.innchargev1.R;
import inncharge.poy.madrigal.innchargev1.database.DatabaseHelper;
import inncharge.poy.madrigal.innchargev1.adapters.VivzAdapter;


/**
 * A simple {@link Fragment} subclass.
 * Use the {@link FragmentMeal#newInstance} factory method to
 * create an instance of this fragment.
 */
public class FragmentMeal extends Fragment {

    private DatabaseHelper db;
    private RecyclerView recyclerView;
    private VivzAdapter adapter;


    // 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;



    /**
     * 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 FragmentMeal.
     */
    // TODO: Rename and change types and number of parameters
    public static FragmentMeal newInstance(String param1, String param2) {
        FragmentMeal fragment = new FragmentMeal();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

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

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

        db = new DatabaseHelper(getActivity());

    }



    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment

        View view = inflater.inflate(R.layout.fragment_meal, container, false);
        recyclerView = (RecyclerView) view.findViewById(R.id.mealList);
        adapter = new VivzAdapter(getActivity(),db.getMealData());
        recyclerView.setAdapter(adapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {

            @Override


            public void onClick(View view, int postion) {

                final Dialog dialog = new Dialog(getActivity());
                dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
                dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
                dialog.setContentView(R.layout.custom_dialog);
                dialog.show();

                final EditText editText = (EditText)dialog.findViewById(R.id.editText_pin);
                Button submitButton = (Button)dialog.findViewById(R.id.submit_button);
                Button cancelButton = (Button)dialog.findViewById(R.id.cancel_button);

                submitButton.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {

                        String text = editText.getText().toString();
                        Toast.makeText(getActivity(), "Pin submitted is : " + text, Toast.LENGTH_SHORT).show();
                        dialog.cancel();

                    }
                });


                cancelButton.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {

                        dialog.cancel();

                    }
                });

            }

            @Override
            public void onLongClick(View view, int position) {

                Toast.makeText(getActivity(), "onLongClick" + position, Toast.LENGTH_SHORT).show();

            }
        }));

        return view;
    }

    class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {

        private GestureDetector gestureDetector;
        private ClickListener clickListener;
        public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener){
            Log.d("VIVZ", "constructor invoked ");
            this.clickListener = clickListener;
            gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener(){

                @Override
                public boolean onSingleTapUp(MotionEvent e) {
                    Log.d("VIVZ","onSingleTapUp " + e);
                    return true;
                }

                @Override
                public void onLongPress(MotionEvent e) {
                    View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
                    if (child != null && clickListener != null){

                        clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child));

                    }
                    Log.d("VIVZ", "onLongPress " + e);
                }
            });
        }

        @Override
        public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {

            View child = rv.findChildViewUnder(e.getX(), e.getY());
            if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)){

                clickListener.onClick(child, rv.getChildAdapterPosition(child));

            }
            return false;

        }

        @Override
        public void onTouchEvent(RecyclerView rv, MotionEvent e) {
            Log.d("VIVZ","onTouchEvent "+ e);
        }

        @Override
        public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

        }
    }

    public static interface ClickListener {

        public void onClick(View arg1, int arg2);
        public void onLongClick(View view, int position);

    }

}

Answer 1

Slidenerd制作了一些很棒的视频，当我开始时，他帮助了我很多。

您可能想重新考虑一下您要尝试做的事情并采用不同的方法...为什么要将UI中的3个textview传递给对话框？这将是痛苦的。

好像你将不得不扩展DialogFragment（我假设你正在使用的是对话框，也许是警报？）。在DialogFragment中创建一个静态工厂方法，如...

public class MyDialog extends DialogFragment {

    private static tv1, tv2, tv3;

    public static MyDialog newInstance(TextView tv1, TextView tv2, TextView tv3){
       MyDialog.tv1 = tv1;
       MyDialog.tv2 = tv2;
       MyDialog.tv3 = tv3;
       return new MyDialog();
    }
}

完成此操作后，在ViewHolder类的onClick方法中创建此对话框片段。通过这样做来实例化DialogFragment ......

MyDialog.newInstance(title,email,itemId).show(getFragmentManager(),"dialog_tag");

就像我之前说的那样，它似乎很草率，可能容易出错。可能有更好的方法可以做到这一点，但这是我能想到的全部。让我知道它是如何为您工作的......或者可能会修改您的问题，以便我们可以更好地帮助您更好地解决您尝试做的事情。

如何从recyclerview获取3 textview并将其传递给dialogbox

1 个答案: