BitmapDrawableImageView.java revision 9c6ac19d4a3d39b7c2992060957920118ff56a65
1/* 2 * Copyright (C) 2013 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 17package com.android.bitmap.view; 18 19import android.content.Context; 20import android.graphics.Bitmap; 21import android.graphics.drawable.Drawable; 22import android.net.Uri; 23import android.util.AttributeSet; 24import android.widget.ImageView; 25 26import com.android.bitmap.drawable.BasicBitmapDrawable; 27 28/** 29 * A helpful ImageView replacement that can generally be used in lieu of ImageView. 30 * BitmapDrawableImageView has logic to unbind its BasicBitmapDrawable when it is detached from the 31 * window. 32 */ 33public class BitmapDrawableImageView extends ImageView { 34 private BasicBitmapDrawable mDrawable; 35 36 public BitmapDrawableImageView(final Context context) { 37 this(context, null); 38 } 39 40 public BitmapDrawableImageView(final Context context, final AttributeSet attrs) { 41 this(context, attrs, 0); 42 } 43 44 public BitmapDrawableImageView(final Context context, final AttributeSet attrs, 45 final int defStyle) { 46 super(context, attrs, defStyle); 47 } 48 49 /** 50 * Get the source BasicBitmapDrawable for this BitmapDrawableImageView. 51 * @return The source drawable. 52 */ 53 public BasicBitmapDrawable getBasicBitmapDrawable() { 54 return mDrawable; 55 } 56 57 /** 58 * Set the given BasicBitmapDrawable as the source for this BitmapDrawableImageView. 59 * @param drawable The source drawable. 60 */ 61 public void setBasicBitmapDrawable(BasicBitmapDrawable drawable) { 62 super.setImageDrawable(drawable); 63 unbindDrawable(); 64 mDrawable = drawable; 65 } 66 67 private void unbindDrawable() { 68 if (mDrawable != null) { 69 mDrawable.unbind(); 70 mDrawable = null; 71 } 72 } 73 74 @Override 75 public void setImageResource(final int resId) { 76 super.setImageResource(resId); 77 unbindDrawable(); 78 } 79 80 @Override 81 public void setImageURI(final Uri uri) { 82 super.setImageURI(uri); 83 unbindDrawable(); 84 } 85 86 @Override 87 public void setImageDrawable(final Drawable drawable) { 88 super.setImageDrawable(drawable); 89 unbindDrawable(); 90 } 91 92 @Override 93 public void setImageBitmap(final Bitmap bm) { 94 super.setImageBitmap(bm); 95 unbindDrawable(); 96 } 97 98 @Override 99 protected void onDetachedFromWindow() { 100 super.onDetachedFromWindow(); 101 unbindDrawable(); 102 } 103} 104