content: /*
   * Copyright (C) 2006 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.widget;
  
  import android.annotation.DrawableRes;
  import android.content.Context;
  import android.graphics.drawable.Drawable;
  import android.net.Uri;
  import android.util.AttributeSet;
  
  /**
   * {@link ViewSwitcher} that switches between two ImageViews when a new
   * image is set on it. The views added to an ImageSwitcher must all be
   * {@link ImageView ImageViews}.
   */
  public class ImageSwitcher extends ViewSwitcher
  {
      /**
       * Creates a new empty ImageSwitcher.
       *
       * @param context the application's environment
       */
      public ImageSwitcher(Context context)
      {
          super(context);
      }
  
      /**
       * Creates a new empty ImageSwitcher for the given context and with the
       * specified set attributes.
       *
       * @param context the application environment
       * @param attrs a collection of attributes
       */
      public ImageSwitcher(Context context, AttributeSet attrs) {
          super(context, attrs);
      }
  
      /**
       * Sets a new image on the ImageSwitcher with the given resource id.
       * This will set that image resource on the next ImageView in the switcher and will
       * then switch to that view.
       *
       * @param resid a Drawable resource id
       *
       * @see ImageView#setImageResource(int)
       */
      public void setImageResource(@DrawableRes int resid)
      {
          ImageView image = (ImageView)this.getNextView();
          image.setImageResource(resid);
          showNext();
      }
  
      /**
       * Sets a new image on the ImageSwitcher with the given Uri.
       * This will set that image on the next ImageView in the switcher and will
       * then switch to that view.
       *
       * @param uri the Uri of an image
       *
       * @see ImageView#setImageURI(Uri)
       */
      public void setImageURI(Uri uri)
      {
          ImageView image = (ImageView)this.getNextView();
          image.setImageURI(uri);
          showNext();
      }
  
      /**
       * Sets a new drawable on the ImageSwitcher.
       * This will set that drawable on the next ImageView in the switcher and will
       * then switch to that view.
       *
       * @param drawable the drawable to be set or {@code null} to clear the content
       *
       * @see ImageView#setImageDrawable(Drawable)
       */
      public void setImageDrawable(Drawable drawable)
      {
          ImageView image = (ImageView)this.getNextView();
          image.setImageDrawable(drawable);
          showNext();
      }
  
      @Override
      public CharSequence getAccessibilityClassName() {
          return ImageSwitcher.class.getName();
      }
  }
  