电子邮件从内部存储 [英] Email from internal storage

问题描述

在我的应用程序文件写入到内部存储器为覆盖在 Android开发。再后来我想以电子邮件，我写到内部存储器中的文件。这是我的code，我得到的错误，任何帮助将AP preciated。

 的FileOutputStream FOS = openFileOutput（xmlFilename，MODE_PRIVATE）;
fos.write（xml.getBytes（））;
fos.close（）;
意向意图=新的意图（android.content.Intent.ACTION_SEND）;
intent.setType（text / plain的）;
...
开放的我们的uri = Uri.fromFile（新文件（xmlFilename））;
intent.putExtra（android.content.Intent.EXTRA_STREAM，URI）;
startActivity（Intent.createChooser（意向，发送电子邮件..））;
 

和错误的是

  

文件：//附件路径必须指向文件：// MNT / SD卡。忽略附件文件：// ...

解决方案

我想你可能已经发现在Android的Gmail客户端中的错误（或者至少是不必要的限制）。我能解决它，但它给我的印象太具体实施，并且需要更多一点的工作可移植的：

首先CommonsWare是非常正确的有关需要，使文件全局可读：

  FOS = openFileOutput（xmlFilename，MODE_WORLD_READABLE）;
 

接下来，我们需要解决的Gmail就坚持了到/ mnt / SD卡（或执行特定的相同呢？）路径：

 开放的URI = Uri.fromFile（新文件（到/ mnt / SD卡/../.."+ getFilesDir（）+/+ xmlFilename））;
 

至少我修改姜饼设备上，这让我的Gmail附件从私有存储到自己，并使用preVIEW按钮，当我收到它看到的内容。但我不觉得很好，他们不得不这样做，使其工作，谁知道会与其他版本的Gmail或其他电子邮件客户端或手机，它在其他地方挂载外部存储发生什么。

On my application I write a file to the internal storage as covered on android developer. Then later on I wish to email the file I wrote into the internal storage. Here is my code and the error I am getting, any help will be appreciated.

FileOutputStream fos = openFileOutput(xmlFilename, MODE_PRIVATE);
fos.write(xml.getBytes());
fos.close();
Intent intent = new Intent(android.content.Intent.ACTION_SEND);
intent.setType("text/plain");
...
Uri uri = Uri.fromFile(new File(xmlFilename));
intent.putExtra(android.content.Intent.EXTRA_STREAM, uri);
startActivity(Intent.createChooser(intent, "Send eMail.."));

And the error is

file:// attachment path must point to file://mnt/sdcard. Ignoring attachment file://...

解决方案

I think you may have found a bug (or at least unnecessary limitation) in the android Gmail client. I was able to work around it, but it strikes me as too implementation specific, and would need a little more work to be portable:

First CommonsWare is very much correct about needing to make the file world readable:

fos = openFileOutput(xmlFilename, MODE_WORLD_READABLE);

Next, we need to work around Gmail's insistence on the /mnt/sdcard (or implementation specific equivalent?) path:

Uri uri = Uri.fromFile(new File("/mnt/sdcard/../.."+getFilesDir()+"/"+xmlFilename));

At least on my modified Gingerbread device, this is letting me Gmail an attachment from private storage to myself, and see the contents using the preview button when I receive it. But I don't feel very "good" about having to do this to make it work, and who knows what would happen with another version of Gmail or another email client or a phone which mounts the external storage elsewhere.

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