[Android] ListViewにButtonを追加する。

Androidでよく使ってるListViewにButtonを追加する方法。

まず、TextViewとButtonを持つ行レイアウトを作る。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="fill_parent"
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_height="wrap_content">
 <TextView android:id="@+id/list_with_button_text"
  android:layout_height="48dp" android:layout_width="fill_parent"
  android:layout_marginRight="80dp"></TextView>
 <Button android:id="@+id/list_with_button_button"
  android:layout_alignParentRight="true" android:layout_height="48dp"
  android:layout_width="80dp"></Button>
</RelativeLayout>

次はAdapterをカスタマイズする。

package com.babukuma.android.test;

import static com.babukuma.android.test.Main.LOG_TAG;
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView;

public class ListViewWithButton extends ListActivity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);

  setListAdapter(new ListAdapterWithButton<String>(this, getResources()
    .getStringArray(R.array.list_test_menus)));
 }

 class ListAdapterWithButton<T> extends BaseAdapter {
  private final LayoutInflater mInflater;
  private final T[] array;

  public ListAdapterWithButton(final Context context, final T[] array) {
   this.mInflater = LayoutInflater.from(context);
   this.array = array;
  }

  @Override
  public int getCount() {
   return array.length;
  }

  @Override
  public T getItem(int position) {
   return array[position];
  }

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

  class ViewHolder {
   TextView label;
   Button button;
  }

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

   if (convertView == null) {
    convertView = mInflater
      .inflate(R.layout.list_with_button, null);

    // Creates a ViewHolder and store references to the two children
    // views
    // we want to bind data to.
    holder = new ViewHolder();
    holder.label = (TextView) convertView
      .findViewById(R.id.list_with_button_text);
    holder.label.setOnClickListener(new OnClickListener() {
     @Override
     public void onClick(View v) {
      Log.d(LOG_TAG, "label click position=" + position);
     }
    });
    holder.button = (Button) convertView
      .findViewById(R.id.list_with_button_button);
    holder.button.setOnClickListener(new OnClickListener() {

     @Override
     public void onClick(View v) {
      Log.d(LOG_TAG, "button click position=" + position);
     }
    });

    holder.label.setText(array[position].toString());
    holder.button.setText(array[position].toString());

    convertView.setTag(holder);
   } else {
    holder = (ViewHolder) convertView.getTag();
   }

   return convertView;
  }

 }
}

これで完了。