| /* |
| * Copyright (C) 2015 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 com.android.example.cannylive; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import android.content.ContentResolver; |
| import android.content.ContentUris; |
| import android.content.ContentValues; |
| import android.graphics.Bitmap; |
| import android.graphics.Matrix; |
| import android.net.Uri; |
| import android.provider.MediaStore; |
| import android.provider.MediaStore.Images; |
| |
| /** |
| * Utility class to save images into android image database |
| */ |
| public class MediaStoreSaver { |
| public static interface StreamWriter { |
| void write(OutputStream imageOut) throws IOException; |
| } |
| |
| public static final String insertImage(ContentResolver contentResolver, |
| Bitmap image, |
| String title, |
| String description) { |
| final Bitmap source = image; |
| StreamWriter streamWriter = new StreamWriter() { |
| public void write(OutputStream imageOut) { |
| source.compress(Bitmap.CompressFormat.JPEG, 50, imageOut); |
| } |
| }; |
| return insertImage(contentResolver, streamWriter, title, description); |
| } |
| |
| |
| public static final String insertImage(ContentResolver cr, |
| StreamWriter source, |
| String title, |
| String description) { |
| |
| ContentValues values = new ContentValues(); |
| values.put(Images.Media.TITLE, title); |
| values.put(Images.Media.DISPLAY_NAME, title); |
| values.put(Images.Media.DESCRIPTION, description); |
| values.put(Images.Media.MIME_TYPE, "image/jpeg"); |
| // Add the date meta data to ensure the image is added at the front of the gallery |
| values.put(Images.Media.DATE_ADDED, System.currentTimeMillis()); |
| values.put(Images.Media.DATE_TAKEN, System.currentTimeMillis()); |
| |
| Uri url = null; |
| String stringUrl = null; /* value to be returned */ |
| |
| try { |
| url = cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); |
| |
| if (source != null) { |
| OutputStream imageOut = cr.openOutputStream(url); |
| try { |
| source.write(imageOut); |
| } finally { |
| imageOut.close(); |
| } |
| |
| long id = ContentUris.parseId(url); |
| // Wait until MINI_KIND thumbnail is generated. |
| Bitmap miniThumb = Images.Thumbnails.getThumbnail(cr, id, Images.Thumbnails.MINI_KIND, null); |
| // This is for backward compatibility. |
| storeThumbnail(cr, miniThumb, id, 50F, 50F, Images.Thumbnails.MICRO_KIND); |
| } else { |
| cr.delete(url, null, null); |
| url = null; |
| } |
| } catch (Exception e) { |
| if (url != null) { |
| cr.delete(url, null, null); |
| url = null; |
| } |
| } |
| |
| if (url != null) { |
| stringUrl = url.toString(); |
| } |
| |
| return stringUrl; |
| } |
| |
| /** |
| * A copy of the Android internals StoreThumbnail method, it used with the insertImage to |
| * populate the android.provider.MediaStore.Images.Media#insertImage with all the correct |
| * meta data. The StoreThumbnail method is private so it must be duplicated here. |
| * |
| * @see android.provider.MediaStore.Images.Media (StoreThumbnail private method) |
| */ |
| private static final Bitmap storeThumbnail( |
| ContentResolver cr, |
| Bitmap source, |
| long id, |
| float width, |
| float height, |
| int kind) { |
| |
| // create the matrix to scale it |
| Matrix matrix = new Matrix(); |
| |
| float scaleX = width / source.getWidth(); |
| float scaleY = height / source.getHeight(); |
| |
| matrix.setScale(scaleX, scaleY); |
| |
| Bitmap thumb = Bitmap.createBitmap(source, 0, 0, |
| source.getWidth(), |
| source.getHeight(), matrix, |
| true |
| ); |
| |
| ContentValues values = new ContentValues(4); |
| values.put(Images.Thumbnails.KIND, kind); |
| values.put(Images.Thumbnails.IMAGE_ID, (int) id); |
| values.put(Images.Thumbnails.HEIGHT, thumb.getHeight()); |
| values.put(Images.Thumbnails.WIDTH, thumb.getWidth()); |
| |
| Uri url = cr.insert(Images.Thumbnails.EXTERNAL_CONTENT_URI, values); |
| |
| try { |
| OutputStream thumbOut = cr.openOutputStream(url); |
| thumb.compress(Bitmap.CompressFormat.JPEG, 100, thumbOut); |
| thumbOut.close(); |
| return thumb; |
| } catch (FileNotFoundException ex) { |
| return null; |
| } catch (IOException ex) { |
| return null; |
| } |
| } |
| |
| |
| } |