Android Open Source - RZAndroidBaseUtils Simple View Holder Strategy

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License

The source code is released under:

MIT License

Java Source Code

package com.raizlabs.widget.utils;
/*from   www .  ja v  a  2 s .c o m*/
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/**
 * Class which provides a base for implementing a {@link ViewHolderStrategy}
 * with one view type. Automatically does some of the "boiler plate" code
 * that is consistent in many implementations and allows quick implementation
 * via a few abstract functions.
 * 
 * @author Dylan James
 *
 * @param <Item> The type of item to create views for.
 * @param <Holder> The type of the view holder this class uses.
 */
public abstract class SimpleViewHolderStrategy<Item, Holder> 
implements ViewHolderStrategy<Item, Holder> {
  /**
   * Gets the resource ID of the layout which should be inflated for the given item.
   * @param item The item to get a layout resource ID for.
   * @return The resource ID of the layout to be inflated for the given item.
   */
  protected abstract int getLayoutResID(Item item);
  
  public View inflateView(Item item, LayoutInflater inflater, ViewGroup container) {
    return inflater.inflate(getLayoutResID(item), container, false);
  }
  
  @Override
  public boolean areAllItemsEnabled() {
    return true;
  }

  @Override
  public boolean isEnabled(Item item) {
    return true;
  }

  @SuppressWarnings({ "unchecked", "unused" })
  public boolean isValidViewHolder(Item item, Object holder) {
    try {
      Holder typed = (Holder) holder;
      return true;
    } catch (ClassCastException ex) { }
    return false;
  }
  
  @Override
  public int getItemViewType(Item item) {
    return 0;
  }

  @Override
  public int getViewTypeCount() {
    return 1;
  }
}

Java Source Code List

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