Question

我在适配器中有一个edittext来设置项目的数量。每个项目的初始数量设置为0.现在我希望在编辑文本字段完成编辑后，输入将被设置为该项目的数量。我试过onclicklistener但它没有用。我发布了我的适配器和项目类。让我知道如何做到这一点。

我的适配器：

package com.res.easyorder;


import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.zip.Inflater;

public class MyAdapter extends ArrayAdapter<item> {

    int q_ty = 0;
    ArrayList<item> foodlist = new ArrayList<>();

    public MyAdapter(Context context, int textViewResourceId, ArrayList<item> objects){

        super(context, textViewResourceId, objects);
        foodlist = objects;
    }

    @Override
    public int getCount(){

        return super.getCount();
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent){

        View v = convertView;
        LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = inflater.inflate(R.layout.list_view_layout, null);

        ImageView foodpic = (ImageView) v.findViewById(R.id.foodpic);
        TextView foodname = (TextView) v.findViewById(R.id.foodname);
        TextView foodprice = (TextView) v.findViewById(R.id.foodprice);
        Button plus = (Button) v.findViewById(R.id.plus);
        final EditText quantity = (EditText) v.findViewById(R.id.quantity);
        Button minus = (Button) v.findViewById(R.id.minus);

        plus.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                item item = getItem(position);
                q_ty = Integer.parseInt(item.getQuantity());
                q_ty = q_ty + 1;
                item.setQuantity(String.valueOf(q_ty));
                quantity.setText(item.getQuantity());
            }
        });

        minus.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                item item = getItem(position);
                q_ty = Integer.parseInt(item.getQuantity());

                if (q_ty > 0) {
                    q_ty = q_ty - 1;
                    item.setQuantity(String.valueOf(q_ty));
                    quantity.setText(item.getQuantity());
                }
            }
        });



        foodname.setText(foodlist.get(position).getFoodName());
        foodpic.setImageResource(foodlist.get(position).getFoodImage());
        foodprice.setText("BDT: " +foodlist.get(position).getFoodPrice());
        quantity.setText(foodlist.get(position).getQuantity());

        return v;
    }
}

项目类：

package com.res.easyorder;

/**
 * Created by User on 02-Apr-18.
 */

public class item {

    String foodName, quantity;
    int foodImage, foodPrice;

    public item(String foodName, int foodImage, int foodPrice, String quantity)
    {
        this.foodName = foodName;
        this.foodImage = foodImage;
        this.foodPrice = foodPrice;
        this.quantity = quantity;
    }

    public void setQuantity(String quantity)
    {
        this.quantity = quantity;
    }

    public String getFoodName()
    {
        return foodName;
    }

    public int getFoodImage()
    {
        return foodImage;
    }

    public int getFoodPrice()
    {
        return foodPrice;
    }

    public String getQuantity()
    {
        return quantity;
    }

}

Answer 1

editText.setOnFocusChangeListener(new OnFocusChangeListener() {

            @Override
            public void onFocusChange(View v, boolean hasFocus) {

                if(!hasFocus){
              //this if condition is true when edittext lost focus...
              // do your changes in data and flag here
                    editText.setText("10");
              //then you can use notifyDataSetChanged or notifyItemChanged
                }
            }
        });

编辑文本字段后的操作已完成编辑

1 个答案: