Android Open Source - Android-JSON-Parse-Images-and-Texts-Tutorial List View Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.androidbegin.jsonparsetutorial;
//from w w  w  .j  a  va 2  s . c o  m
import java.util.ArrayList;
import java.util.HashMap;

import android.content.Context;
import android.content.Intent;
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 ListViewAdapter extends BaseAdapter {

  // Declare Variables
  Context context;
  LayoutInflater inflater;
  ArrayList<HashMap<String, String>> data;
  ImageLoader imageLoader;

  public ListViewAdapter(Context context,
      ArrayList<HashMap<String, String>> arraylist) {
    this.context = context;
    data = arraylist;
    imageLoader = new ImageLoader(context);

  }

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

  @Override
  public Object getItem(int position) {
    return null;
  }

  @Override
  public long getItemId(int position) {
    return 0;
  }

  public View getView(final int position, View convertView, ViewGroup parent) {
    // Declare Variables
    TextView rank;
    TextView country;
    TextView population;
    ImageView flag;

    inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    View itemView = inflater.inflate(R.layout.listview_item, parent, false);
    // Get the position from the results
    HashMap<String, String> resultp = new HashMap<String, String>();
    resultp = data.get(position);

    // Locate the TextViews in listview_item.xml
    rank = (TextView) itemView.findViewById(R.id.rank); 
    country = (TextView) itemView.findViewById(R.id.country);
    population = (TextView) itemView.findViewById(R.id.population); 
    // Locate the ImageView in listview_item.xml
    flag = (ImageView) itemView.findViewById(R.id.flag);

    // Capture position and set results to the TextViews
    rank.setText(resultp.get(MainActivity.RANK));
    country.setText(resultp.get(MainActivity.COUNTRY));
    population.setText(resultp.get(MainActivity.POPULATION));
    // Capture position and set results to the ImageView
    // Passes flag images URL into ImageLoader.class to download and cache
    // images
    imageLoader.DisplayImage(resultp.get(MainActivity.FLAG), flag);
    // Capture button clicks on ListView items
    itemView.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View arg0) {
        // Get the position from the results
        HashMap<String, String> resultp = new HashMap<String, String>();
        resultp = data.get(position);
        // Send single item click data to SingleItemView Class
        Intent intent = new Intent(context, SingleItemView.class);
        // Pass all data rank
        intent.putExtra("rank", resultp.get(MainActivity.RANK));
        // Pass all data country
        intent.putExtra("country", resultp.get(MainActivity.COUNTRY));
        // Pass all data population
        intent.putExtra("population",
            resultp.get(MainActivity.POPULATION));
        // Pass all data flag
        intent.putExtra("flag", resultp.get(MainActivity.FLAG));
        // Start SingleItemView Class
        context.startActivity(intent);

      }
    });

    return itemView;
  }
}

Java Source Code List

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