获取Android上照片画廊名单 [英] Get list of photo galleries on Android

问题描述

我在寻找： 现有相册名称的列表（希望他们的首要缩略图以及） 画廊的内容（然后我可以加载的缩略图，并根据需要全尺寸）

I'm looking for: A list of the existing photo gallery names (hopefully their top thumbnail as well) The contents of the gallery (I can then load thumbnails and full size as needed)

我将如何去获得的画廊名单（不知道这是正确的术语在用于Android的可见光图像在画廊的应用程序...的分组）和它们的内容是什么？我需要访问库在它的不使用现有的画廊显示结构（我创建一个全新的，而不是过层到照片请求等。）

How would I go about getting a list of the "Galleries" (don't know if that's the proper term in android for the groupings of images visible in the Gallery app...) and their contents? I need access to the gallery in it's structure without using the existing gallery display (I'm creating a totally new one, not an over layer to the photo requestor etc.)

我想MediaStore.Images是哪里我需要，但我没有看到任何东西，这将使我的分组...

I assume MediaStore.Images is where I need to be but I don't see anything that will give me the groupings...

推荐答案

分组由 MediaStore.Images.Media.BUCKET_DISPLAY_NAME 定义。下面是示例code列出的图像和记录他们的斗名，date_taken：

Groupings are defined by MediaStore.Images.Media.BUCKET_DISPLAY_NAME. Here is the sample code to list the images and log their bucket name and date_taken:

    // which image properties are we querying
    String[] projection = new String[]{
            MediaStore.Images.Media._ID,
            MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
            MediaStore.Images.Media.DATE_TAKEN
    };

    // content:// style URI for the "primary" external storage volume
    Uri images = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

    // Make the query.
    Cursor cur = managedQuery(images,
            projection, // Which columns to return
            null,       // Which rows to return (all rows)
            null,       // Selection arguments (none)
            null        // Ordering
            );

    Log.i("ListingImages"," query count="+cur.getCount());

    if (cur.moveToFirst()) {
        String bucket;
        String date;
        int bucketColumn = cur.getColumnIndex(
            MediaStore.Images.Media.BUCKET_DISPLAY_NAME);

        int dateColumn = cur.getColumnIndex(
            MediaStore.Images.Media.DATE_TAKEN);

        do {
            // Get the field values
            bucket = cur.getString(bucketColumn);
            date = cur.getString(dateColumn);

            // Do something with the values.
            Log.i("ListingImages", " bucket=" + bucket 
                   + "  date_taken=" + date);
        } while (cur.moveToNext());

    }

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