Android 尝试将文件从 SD 卡附加到电子邮件
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Trying to attach a file from SD Card to email
提问by Chrispix
I am trying to launch an Intent to send an email. All of that works, but when I try to actually send the email a couple 'weird' things happen.
我正在尝试启动 Intent 以发送电子邮件。所有这些都有效，但是当我尝试实际发送电子邮件时，会发生一些“奇怪”的事情。
here is code
这是代码
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.setType("image/jpeg");
sendIntent.putExtra(Intent.EXTRA_SUBJECT, "Photo");
sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://sdcard/dcim/Camera/filename.jpg"));
sendIntent.putExtra(Intent.EXTRA_TEXT, "Enjoy the photo");
startActivity(Intent.createChooser(sendIntent, "Email:"));
So if I launch using the Gmail menu context It shows the attachment, lets me type who the email is to, and edit the body & subject. No big deal. I hit send, and it sends. The only thing is the attachment does NOT get sent.
因此，如果我使用 Gmail 菜单上下文启动它会显示附件，让我输入电子邮件的收件人，并编辑正文和主题。没什么大不了。我点击发送，它发送。唯一的事情是附件没有被发送。
So. I figured, why not try it w/ the Email menu context (for my backup email account on my phone). It shows the attachment, but no text at all in the body or subject. When I send it, the attachment sends correctly. That would lead me to believe something is quite wrong. Do I need a new permission in the Manifest launch an intent to send email w/ attachment? What am I doing wrong?
所以。我想，为什么不尝试使用电子邮件菜单上下文（对于我手机上的备份电子邮件帐户）。它显示附件，但正文或主题中根本没有文本。当我发送它时，附件发送正确。那会让我相信有些事情是完全错误的。我是否需要在 Manifest 中获得新权限才能发送带有附件的电子邮件？我究竟做错了什么？
回答by Finlay
Also getting the same problem
也遇到同样的问题
Code:
代码：
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("image/jpeg");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]
{"[email protected]"});
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"Test Subject");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,
"go on read the emails");
Log.v(getClass().getSimpleName(), "sPhotoUri=" + Uri.parse("file:/"+ sPhotoFileName));
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:/"+ sPhotoFileName));
startActivity(Intent.createChooser(emailIntent, "Send mail..."));
From adb logcat:
从亚行日志猫：
V/DumbDumpersMain( 3972): sPhotoUri=file://sdcard/DumbDumpers/DumbDumper.jpg
I/ActivityManager( 56): Starting activity: Intent { action=android.intent.action.CHOOSER comp={android/com.android.internal.app.ChooserActivity} (has extras) }
I/ActivityManager( 56): Starting activity: Intent { action=android.intent.action.SEND type=jpeg/image flags=0x3000000 comp={com.google.android.gm/com.google.android.gm.ComposeActivityGmail} (has extras) }
I/ActivityManager( 56): Starting activity: Intent { action=android.intent.action.SEND type=jpeg/image flags=0x2800000 comp={com.google.android.gm/com.google.android.gm.ComposeActivity} (has extras) }
D/gmail-ls( 120): MailProvider.query: content://gmail-ls/labels/[email protected](null, null)
D/Gmail ( 2507): URI FOUND:file://sdcard/DumbDumpers/DumbDumper.jpg
Looks like the email provider is attaching a 0 length file. When I check the filesystem the file is there and correct. The code which creates the image file is well finished prior to the attempt to email it.
看起来电子邮件提供商附加了一个长度为 0 的文件。当我检查文件系统时，文件在那里并且是正确的。创建图像文件的代码在尝试通过电子邮件发送之前已经完成。
Anyone fixed this without magic reboots (I've already tried that)?
有人在没有神奇重启的情况下解决了这个问题（我已经试过了）？
Regards,
Fin
问候，
鳍
Update
更新
Path for me should have been
路径对我来说应该是
file:///sdcard/DumbDumpers/DumbDumper.jpg
file:///sdcard/DumbDumpers/DumbDumper.jpg
you need the extra /as this points to the root directory, i.e.:
你需要额外的，/因为它指向根目录，即：
file://+/sdcard/DumbDumpers/DumbDumper.jpg
file://+/sdcard/DumbDumpers/DumbDumper.jpg
combined as
合并为
file:///sdcard/DumbDumpers/DumbDumper.jpg
file:///sdcard/DumbDumpers/DumbDumper.jpg
In the above snippet you need:
在上面的代码段中，您需要：
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"+ sPhotoFileName));
I hope this helps. It took me ages to debug.
我希望这有帮助。我花了很长时间来调试。
Regards,
Finlay
问候，
芬莱
回答by Michael F
Just a little remark from my side. I've been having the same issues with GMail, but somehow it seems to work when I store the file in question on the SD card first and retrieve it from there, rather than from the assets. So my code is the following:
只是我这边的一点意见。我在使用 GMail 时遇到了同样的问题，但是当我首先将有问题的文件存储在 SD 卡上并从那里而不是从资产中检索它时，它似乎可以工作。所以我的代码如下：
Intent i = new Intent(Intent.ACTION_SEND);
i.putExtra(Intent.EXTRA_SUBJECT, "Title");
i.putExtra(Intent.EXTRA_TEXT, "Content");
i.putExtra(Intent.EXTRA_STREAM, uri);
i.setType("text/plain");
startActivity(Intent.createChooser(i, "Send mail"));
and here,
和这里，
uri = Uri.fromFile(new File(context.getFilesDir(), FILENAME));
does notwork, whereas
也没有工作，而
uri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), FILENAME));
does.
做。
Regards, Michael
问候，迈克尔
回答by Snigdha
instead of "Uri.parse" use "Uri.fromFile(new File(Environment.getExternalStorageDirectory(),"file name"))"
而不是“Uri.parse”使用“Uri.fromFile(new File(Environment.getExternalStorageDirectory(),"file name"))”
Environment.getExternalStorageDirectory() - path to SDcard or any other external storage
Environment.getExternalStorageDirectory() - SDcard 或任何其他外部存储的路径
回答by Chrispix
It appears that this is actually correct, not sure what was happening, but after a reboot it started working :/
看来这实际上是正确的，不确定发生了什么，但是重新启动后它开始工作：/
回答by Eduardo Matos
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"[email protected]"});
i.putExtra(Intent.EXTRA_SUBJECT, "Data from app");
i.putExtra(Intent.EXTRA_TEXT , "experience number x");
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Uri uri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "filename.txt"));
i.putExtra(Intent.EXTRA_STREAM, uri);
startActivity(Intent.createChooser(i, "Send email..."));
回答by Railsdev
I got the same problem and looked everywhere for a solution. Finally I solved it by finding an open source app that worked out of the box and looked at how they did it. The code is rather long so I won't quote it here but post a link. Look at the sendEmail function in line 449
我遇到了同样的问题，到处寻找解决方案。最后，我找到了一个开箱即用的开源应用程序，并查看了他们是如何做到的，从而解决了这个问题。代码很长，所以我不会在这里引用它，而是发布一个链接。查看第 449 行的 sendEmail 函数
I refactored my code to be similar, and now it works. I hope this will help others in the same situation.
我将我的代码重构为类似的，现在它可以工作了。我希望这会帮助处于相同情况的其他人。
回答by android.weasel
From RFC 1738section 3.10:
来自RFC 1738第 3.10 节：
A file URL takes the form:
文件 URL 采用以下形式：
file://<host>/<path>
where hostis the fully qualified domain name of the system on which the path is accessible, and pathis a hierarchical directory path of the form directory/directory/.../name.
其中host是路径可访问的系统的完全限定域名，path是目录/目录/.../name形式的分层目录路径。
So it's file:///path/from/root just like http://host/path/from/rootbecause there's an implicit 'localhost' between the second and third slash. But as mentioned above, use Uri.FromFile() to build it.
所以它是 file:///path/from/root 就像http://host/path/from/root因为在第二个和第三个斜杠之间有一个隐式的“localhost”。但如上所述，使用 Uri.FromFile() 来构建它。
回答by CasualCoder
I had the same symptoms. In my case it was because I was initially saving the attachment with the permissions MODE_PRIVATE. As soon as I changed it to MODE_WORLD_READABLEit seems GMail was then able to access the file and send the attachment properly.
我有同样的症状。就我而言，这是因为我最初使用权限保存附件MODE_PRIVATE。一旦我将其更改为MODE_WORLD_READABLEGMail 似乎就可以访问该文件并正确发送附件。
回答by lucasddaniel
It's work perfectly for me: On this solution the Nicolas create one copy inside Cache folder and here gmail intent has access! http://stephendnicholas.com/archives/974
它对我来说非常有用：在这个解决方案中，尼古拉斯在 Cache 文件夹中创建了一个副本，在这里 gmail 意图可以访问！ http://stephendnicholas.com/archives/974
回答by Jotiram Chavan
public void sendMail(String path) {
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,
new String[] {AppConstant.server_mail});
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"IBPS ERROR Mail");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,
"This is an autogenerated mail from IBPS app");
emailIntent.setType("image/png");
Uri myUri = Uri.parse("file://" + path);
emailIntent.putExtra(Intent.EXTRA_STREAM, myUri);
startActivity(Intent.createChooser(emailIntent, "Send mail..."));
}
