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[英]Access Inner Class Method (from Viewholder in adapter) from a Fragment
[英]Access fragment from adapter
這個想法是我有一個列表視圖,其中每個項目都是一個產品,當我點擊項目時,我需要從列表視圖的適配器內的點擊轉到另一個片段。
我的適配器是:
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;
}
}
你必須假設所有代碼都在工作。
如何進入適配器內部的產品片段?
你需要在你的構造函數中傳遞它。 例如:
public class ProductOffersListAdapter extends BaseAdapter
{
private Context context;
private ArrayList<info.android.model.ProductsOffers> navProOffers;
Fragment myFragment;
public ProductOffersListAdapter(Context context, ArrayList<info.android.model.ProductsOffers> navProOffers, Fragment myFragment)
{
this.context = context;
this.myFragment = myFragment;
this.navProOffers = navProOffers;
}
...
我為解決這個問題所做的是:
Intent i = new Intent(v.getContext(), MainActivity.class);
i.putExtra("fragment_value", "2");
v.getContext().startActivity(i);
在主類中,我將參數作為值,並使用開關在主類中設置我感興趣的片段。
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
// TO call fragment use this
AppCompatActivity appCompatActivity = (AppCompatActivity) v.getcontext();
FragmentManager fragmentManager = appCompatActivity.getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(frameLayout.getId(),fragment);
fragmentTransaction.commit();
}
});
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;
}
}
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