Customized SparseArray which allows using a iterator.

IterableSparseArray.java

/**
 * @copyright
 * This code is licensed under the Rekisoft Public License.
 * See http://www.rekisoft.eu/licenses/rkspl.html for more informations.
 */
/**
 * @package eu.rekisoft.android.util
 * This package contains utils provided by [rekisoft.eu](http://rekisoft.eu/).
 */
package eu.rekisoft.android.util;

import android.util.SparseArray;

import java.util.Iterator;

/**
 * Customized SparseArray which allows using a iterator.
 *
 * @author rekire
 * @copyright This code is licensed under the Rekisoft Public License.<br/>
 * See http://www.rekisoft.eu/licenses/rkspl.html for more informations.
 */
public class IterableSparseArray<E> extends SparseArray<E> implements Iterable<E> {
    public IterableSparseArray() {super();}
    public IterableSparseArray(int cap) {super(cap);}
    @Override
    public Iterator<E> iterator() {
        return new SparseIterator<E>(this);
    }

    private static final class SparseIterator<T> implements Iterator<T> {
        private int pos = 0;
        private SparseArray<T> array;

        private SparseIterator(SparseArray<T> array) {
            this.array = array;
        }

        @Override
        public boolean hasNext() {
            return pos < array.size();
        }

        @Override
        public T next() {
            return array.valueAt(pos++);
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException();
        }
    }
}