1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.widget; 18 19 import android.annotation.DrawableRes; 20 import android.content.Context; 21 import android.graphics.drawable.Drawable; 22 import android.net.Uri; 23 import android.util.AttributeSet; 24 25 /** 26 * {@link ViewSwitcher} that switches between two ImageViews when a new 27 * image is set on it. The views added to an ImageSwitcher must all be 28 * {@link ImageView ImageViews}. 29 */ 30 public class ImageSwitcher extends ViewSwitcher 31 { 32 /** 33 * Creates a new empty ImageSwitcher. 34 * 35 * @param context the application's environment 36 */ ImageSwitcher(Context context)37 public ImageSwitcher(Context context) 38 { 39 super(context); 40 } 41 42 /** 43 * Creates a new empty ImageSwitcher for the given context and with the 44 * specified set attributes. 45 * 46 * @param context the application environment 47 * @param attrs a collection of attributes 48 */ ImageSwitcher(Context context, AttributeSet attrs)49 public ImageSwitcher(Context context, AttributeSet attrs) { 50 super(context, attrs); 51 } 52 53 /** 54 * Sets a new image on the ImageSwitcher with the given resource id. 55 * This will set that image resource on the next ImageView in the switcher and will 56 * then switch to that view. 57 * 58 * @param resid a Drawable resource id 59 * 60 * @see ImageView#setImageResource(int) 61 */ setImageResource(@rawableRes int resid)62 public void setImageResource(@DrawableRes int resid) 63 { 64 ImageView image = (ImageView)this.getNextView(); 65 image.setImageResource(resid); 66 showNext(); 67 } 68 69 /** 70 * Sets a new image on the ImageSwitcher with the given Uri. 71 * This will set that image on the next ImageView in the switcher and will 72 * then switch to that view. 73 * 74 * @param uri the Uri of an image 75 * 76 * @see ImageView#setImageURI(Uri) 77 */ setImageURI(Uri uri)78 public void setImageURI(Uri uri) 79 { 80 ImageView image = (ImageView)this.getNextView(); 81 image.setImageURI(uri); 82 showNext(); 83 } 84 85 /** 86 * Sets a new drawable on the ImageSwitcher. 87 * This will set that drawable on the next ImageView in the switcher and will 88 * then switch to that view. 89 * 90 * @param drawable the drawable to be set or {@code null} to clear the content 91 * 92 * @see ImageView#setImageDrawable(Drawable) 93 */ setImageDrawable(Drawable drawable)94 public void setImageDrawable(Drawable drawable) 95 { 96 ImageView image = (ImageView)this.getNextView(); 97 image.setImageDrawable(drawable); 98 showNext(); 99 } 100 101 @Override getAccessibilityClassName()102 public CharSequence getAccessibilityClassName() { 103 return ImageSwitcher.class.getName(); 104 } 105 } 106