Checkable ListView (for Android)

CheckableLayout.java

package daichan4649.test;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Checkable;
import android.widget.LinearLayout;

public class CheckableLayout extends LinearLayout implements Checkable {

    private static final int[] CHECKED_STATE_SET = { android.R.attr.state_checked };

    public CheckableLayout(Context context) {
        super(context, null);
    }

    public CheckableLayout(Context context, AttributeSet attrs) {
        super(context, attrs, 0);
    }

    public CheckableLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    private boolean checked;

    @Override
    public boolean isChecked() {
        return checked;
    }

    @Override
    public void setChecked(boolean checked) {
        if (this.checked != checked) {
            this.checked = checked;
            refreshDrawableState();

            for (int i = 0; i < getChildCount(); i++) {
                View child = getChildAt(i);
                if (child instanceof Checkable) {
                    ((Checkable) child).setChecked(checked);
                }
            }
        }
    }

    @Override
    public void toggle() {
        setChecked(!checked);
    }

    @Override
    protected int[] onCreateDrawableState(int extraSpace) {
        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
        if (isChecked()) {
            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
        }
        return drawableState;
    }
}

inflater_list_column.xml

<?xml version="1.0" encoding="utf-8"?>
<daichan4649.test.CheckableLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/check_area"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical">

    <TextView
        android:id="@+id/text"
        android:layout_width="0dip"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_weight="1"
        android:gravity="center_vertical" />

    <RadioButton
        android:id="@+id/radio"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:focusable="false"
        android:focusableInTouchMode="false" />

</daichan4649.test.CheckableLayout>

TestFragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_test, container, false);

    // 表示データ
    List<String> dataList = new ArrayList<String>();

    // 初期選択位置
    int initSelectedPosition = 3;

    // リスト設定
    TestAdapter adapter = new TestAdapter(getActivity(), dataList);
    ListView listView = (ListView) view.findViewById(R.id.list);
    listView.setAdapter(adapter);
    listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    listView.setItemChecked(initSelectedPosition, true);

    listView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            // 選択状態を要素(checkable)へ反映
            Checkable child = (Checkable) parent.getChildAt(position);
            child.toggle();
        }
    });
    return view;
}

private static class TestAdapter extends ArrayAdapter<String> {

    private LayoutInflater inflater;

    public TestAdapter(Context context, List<String> dataList) {
        super(context, 0, dataList);
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final ViewHolder holder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.inflater_list_column, null);
            holder = new ViewHolder();
            holder.text = (TextView) convertView.findViewById(R.id.text);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        // bindData
        holder.text.setText(getItem(position));
        return convertView;
    }
}

private static class ViewHolder {
    TextView text;
}