从适配器访问片段 [英] Access fragment from adapter

问题描述

这个想法是我有一个列表视图，其中每个项目是一个产品，当我点击该项目时，我需要从列表视图的适配器内的点击转到另一个片段。

我的适配器是：

  package info.android.adapter; 
 
导入info.android.ProductFragment; 
导入info.android.R; 
 
 import java.util.ArrayList; 
 
导入android.app.Activity; 
导入android.app.Fragment; 
导入android.app.FragmentTransaction; 
导入android.content.Context; 
导入android.view.LayoutInflater; 
导入android.view.View; 
导入android.view.View.OnClickListener; 
导入android.view.ViewGroup; 
导入android.widget.BaseAdapter; 
导入android.widget.ImageView; 
导入android.widget.TextView; 
 
 public class ProductOffersListAdapter extends BaseAdapter {
 
 private context context; 
 private ArrayList< info.android.model.ProductsOffers> navProOffers; 
 
 public ProductOffersListAdapter（Context context，ArrayList< info.android.model.ProductsOffers> navProOffers）{
 this.context = context; 
 this.navProOffers = navProOffers; 
} 
 
 @Override 
 public int getCount（）{
 return navProOffers.size（）; 
} 
 
 @Override 
 public info.android.model.ProductsOffers getItem（int position）{
 return navProOffers.get（position）; 
} 
 
 @Override 
 public long getItemId（int position）{
 return position; 
 
 $ b @Override 
 public View getView（int position，View convertView，ViewGroup parent）{
 if（convertView == null）{
 LayoutInflater mInflater =（LayoutInflater）context.getSystemService（Activity.LAYOUT_INFLATER_SERVICE）; 
 convertView = mInflater.inflate（R.layout.fragment_row，null）; 
 
 
 convertView.setOnClickListener（new OnClickListener（）{
 @Override 
 public void onClick（View v）{
 // I need CLALL HERE FRAGMENT_PRODUCT.XML 
} 
}）; 
 
 ImageView img =（ImageView）convertView.findViewById（R.id.image）; 
 
 TextView txtCodigo =（TextView）convertView.findViewById（R.id.txtCodigo）; 
 TextView txtCiudad =（TextView）convertView.findViewById（R.id.txtCiudad）; 
 TextView txtVF =（TextView）convertView.findViewById（R.id.txtVF）; 
 
 String sVF = Double.toString（getItem（position）.ValorFinal）+€; 
 
 txtVF.setText（sVF）; 
 txtCiudad.setText（getItem（position）.ciudad）; 
 txtCodigo.setText（getItem（position）.codigo）; 
 
 convertView.setTag（getItem（position）.codigo）; 
 
 img.setImageBitmap（getItem（position）.Imagen）; 
 
返回convertView; 
 
 
  

你必须假设所有代码正在工作。 p>

如何在产品Fragment内部使用适配器？

解决方案

我做了什么来解决这个问题：

  Intent i = new Intent（v.getContext（），MainActivity.class）; 
 i.putExtra（fragment_value，2）; 
 v.getContext（）。startActivity（i）; 
  

在主类中，我获取参数作为值，感兴趣。

The idea is i have a listview where each item is a product, when I click in the item, I need to go to another Fragment from the click which is inside the adapter of the listview.

My adapter is:

package info.android.adapter;

import info.android.ProductFragment;
import info.android.R;

import java.util.ArrayList;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class ProductOffersListAdapter extends BaseAdapter {

    private Context context;
    private ArrayList<info.android.model.ProductsOffers> navProOffers;

    public ProductOffersListAdapter(Context context, ArrayList<info.android.model.ProductsOffers> navProOffers) {
        this.context = context;
        this.navProOffers = navProOffers;
    }

    @Override
    public int getCount() {
        return navProOffers.size();     
    }

    @Override
    public info.android.model.ProductsOffers getItem(int position) {        
        return navProOffers.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
            convertView = mInflater.inflate(R.layout.fragment_row, null);
        }

        convertView.setOnClickListener(new OnClickListener() {
              @Override
              public void onClick(View v) {
                          // I NEED CLALL HERE FRAGMENT_PRODUCT.XML                             
              }
            });

        ImageView img = (ImageView) convertView.findViewById(R.id.image); 

        TextView txtCodigo = (TextView) convertView.findViewById(R.id.txtCodigo);
        TextView txtCiudad = (TextView) convertView.findViewById(R.id.txtCiudad);               
        TextView txtVF = (TextView) convertView.findViewById(R.id.txtVF);

        String sVF =  Double.toString(getItem(position).ValorFinal) + "€";  

        txtVF.setText(sVF);
        txtCiudad.setText(getItem(position).ciudad);
        txtCodigo.setText(getItem(position).codigo);

        convertView.setTag(getItem(position).codigo);

        img.setImageBitmap(getItem(position).Imagen);

        return convertView;
    }
}

You have to asume all code is working.

How can I go to the product Fragment inside the adapter?

解决方案

What I did to resolve this is:

Intent i = new Intent(v.getContext(), MainActivity.class);                      
i.putExtra("fragment_value", "2");
v.getContext().startActivity(i);

In main class I get the parameter as value and with a switch I set fragment in main which I am interested.

这篇关于从适配器访问片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！