如何从 Gmail 内容提供商获取内容

发布于 2024-12-03 13:42:27 字数 209 浏览 0 评论 0原文

我必须从 gmail 应用程序中检索内容的文件路径。我得到的内容 uri 类似于：

content://gmail-ls/messages/mymailid%40gmail.com/4/attachments/0.1/BEST/false

我尝试查询内容，但只得到两列：标题和大小。我想获取文件路径。

请就此提供帮助。

原文

I have to retrieve the file path of the content from gmail app.
I get content uri similar to:

content://gmail-ls/messages/mymailid%40gmail.com/4/attachments/0.1/BEST/false

I tried queried for the contents but I get only two columns the title and the size. I want to get the file path.

Kindly help regarding this.

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羅雙樹 2024-12-10 13:42:27

我认为您无法直接检索文件路径，因为附件存储在 Google 服务器上。但是，您可以使用 ContentResolver 和 InputStream 访问文件数据，并将附件的数据复制到您的存储中。

受到 CarvingCode 博客的启发，我使用这个片段：

if (intent.getScheme().compareTo("content")==0)
{
    try 
    {
        InputStream attachment = getContentResolver().openInputStream(data);
        if (attachment == null)
            Log.e("onCreate", "cannot access mail attachment");
        else
        {
            FileOutputStream tmp = new FileOutputStream("/mnt/sdcard/attachment.pdf");
            byte []buffer = new byte[1024];
            while (attachment.read(buffer) > 0)
                tmp.write(buffer);

            tmp.close();
            attachment.close();
        }
    } 
    catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

I think you cannot retrieve the file path directly, as the attachment is stored on Google servers. You can, however, access the file data using ContentResolver and InputStream, and copy the attachment's data to your storage.

Inspired by CarvingCode blog, I use this snippet:

if (intent.getScheme().compareTo("content")==0)
{
    try 
    {
        InputStream attachment = getContentResolver().openInputStream(data);
        if (attachment == null)
            Log.e("onCreate", "cannot access mail attachment");
        else
        {
            FileOutputStream tmp = new FileOutputStream("/mnt/sdcard/attachment.pdf");
            byte []buffer = new byte[1024];
            while (attachment.read(buffer) > 0)
                tmp.write(buffer);

            tmp.close();
            attachment.close();
        }
    } 
    catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

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