How to use

indexOfKey

method

in

android.support.v4.util.SimpleArrayMap

public int indexOf(E value) {
 return mMap.indexOfKey(value);
}

/**
 * Check whether a key exists in the array.
 *
 * @param key The key to search for.
 * @return Returns true if the key exists, else false.
 */
public boolean containsKey(Object key) {
  return indexOfKey(key) >= 0;
}

/**
 * Retrieve a value from the array.
 * @param key The key of the value to retrieve.
 * @return Returns the value associated with the given key,
 * or null if there is no such key.
 */
public V get(Object key) {
  final int index = indexOfKey(key);
  return index >= 0 ? (V)mArray[(index<<1)+1] : null;
}

/**
 * Remove an existing key from the array map.
 * @param key The key of the mapping to remove.
 * @return Returns the value that was stored under the key, or null if there
 * was no such key.
 */
public V remove(Object key) {
  final int index = indexOfKey(key);
  if (index >= 0) {
    return removeAt(index);
  }
  return null;
}