Android 保存bitmap到相册

安卓原生的保存相册方法可以用但是可调参数很少，对三星这样的手机支持不好，图片的创建时间一般为1970.1.1，可以通过复写android原生的方法来添加相关参数，比如照片创建时间和gps位置信息什么的

下面是保存到相册用的函数

/**
     * Insert an image and create a thumbnail for it.
     *
     * @param cr          The content resolver to use
     * @param source      The stream to use for the image
     * @param title       The name of the image
     * @param description The description of the image
     * @return The URL to the newly created image, or <code>null</code> if the image failed to be stored
     * for any reason.
     */
    public static String insertImage(ContentResolver cr, Bitmap source,
                                     String title, String description, String fileName) {
        ContentValues values = new ContentValues();
        values.put(MediaStore.Images.Media.TITLE, title);
        values.put(MediaStore.Images.Media.DESCRIPTION, description);
        values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
        values.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis());
        values.put(MediaStore.Images.Media.DATE_MODIFIED, System.currentTimeMillis()));
        values.put(MediaStore.Images.Media.DATE_TAKEN,System.currentTimeMillis());
);
        values.put(MediaStore.Images.Media.DISPLAY_NAME, fileName);
        values.put(MediaStore.Images.Media.LATITUDE,36);
        values.put(MediaStore.Images.Media.LONGITUDE, 120);
        values.put(MediaStore.Images.Media.BUCKET_DISPLAY_NAME, "6666");


        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.compress(Bitmap.CompressFormat.JPEG, 36, imageOut);
                } finally {
                    imageOut.close();
                }

                long id = ContentUris.parseId(url);
                // Wait until MINI_KIND thumbnail is generated.
                Bitmap miniThumb = MediaStore.Images.Thumbnails.getThumbnail(cr, id,
                        MediaStore.Images.Thumbnails.MINI_KIND, null);
                // This is for backward compatibility.
                Bitmap microThumb = StoreThumbnail(cr, miniThumb, id, 50F, 50F,
                        MediaStore.Images.Thumbnails.MICRO_KIND);
            } else {
                JLogUtils.i("Alex", "Failed to create thumbnail, removing original");
                cr.delete(url, null, null);
                url = null;
            }
        } catch (Exception e) {
            Log.i("Alex", "Failed to insert image", e);
            if (url != null) {
                cr.delete(url, null, null);
                url = null;
            }
        }

        if (url != null) {
            stringUrl = url.toString();
        }

        return stringUrl;
    }

    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(MediaStore.Images.Thumbnails.KIND, kind);
        values.put(MediaStore.Images.Thumbnails.IMAGE_ID, (int) id);
        values.put(MediaStore.Images.Thumbnails.HEIGHT, thumb.getHeight());
        values.put(MediaStore.Images.Thumbnails.WIDTH, thumb.getWidth());

        Uri url = cr.insert(MediaStore.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;
        }
    }

调用方法

try {
                                        ContentResolver cr = SelectPhotoActivity.this.getContentResolver();
                                        JImageUtils.insertImage(cr, currPhoto, "qraved" + JTimeUtils.getCurrentTimeLong(), "a photo from app", "我是filename没啥用");
                                    } catch (Exception e) {
                                        e.printStackTrace();
                                    }
                                    //对某些不更新相册的应用程序强制刷新
                                    Intent intent2 = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
                                    Uri uri = Uri.fromFile(new File("/sdcard/image.jpg"));//固定写法
                                    intent2.setData(uri);
                                   PhotoActivity.this.sendBroadcast(intent2);