安卓：问题附件从我的应用程序发送电子邮件 [英] Android: problem sending email with attachment from my application

问题描述

我的应用程序允许用户创建和修改文件。我希望他们能够发送文件作为电子邮件附件。所以，我需要首先创建并写入到一个临时文件，然后我附加到电子邮件。然后我想删除临时文件的电子邮件程序完成时。遗憾的是，Gmail应用程序与结果code尽快作出响应，用户点击发送;如果我只要结果code接收到删除的文件，没有附件发送。

它可能是别的东西是怎么了？和附件不发送出于不同的原因，但我pretty肯定我的判断是正确的，因为低于code正常工作，如果我注释掉 mEmailTmpFile.delete（）电话。它也工作正常，如果我做了什么非常不可取的，比如视频下载（4000）前夕 mEmailTmpFile.delete（）。

反正当电子邮件被发送完成得到通知？或者我应该怎么解决这个任何其他建议？

  //发送电子邮件...文件externalStorage = Environment.getExternalStorageDirectory（）;
串sdcardPath = externalStorage.getAbsolutePath（）;
mEmailTmpFile =新的文件（sdcardPath +/+姓名）;//做一些其他的，以保证unqiueness，然后写入文件...//全部完成编写，发送电子邮件意图sendIntent =新意图（Intent.ACTION_SEND）;
sendIntent.setType（应用程序/压缩）;
sendIntent.putExtra（Intent.EXTRA_SUBJECT，名）;
sendIntent.putExtra（Intent.EXTRA_TEXT，文件附后。）;
sendIntent.putExtra（Intent.EXTRA_STREAM，Uri.parse（文件：//+ mEmailTmpFile.getPath（）））;
startActivityForResult（Intent.createChooser（sendIntent，电子邮件），请求code_EMAIL）;公共同步无效的onActivityResult（INT REQ code，INT结果code，意图数据）
{
   如果（REQ code == REQUEST code_EMAIL）
   {
    mEmailTmpFile.delete（）;
    }
}
 

解决方案

在我的应用程序，我不删除临时文件。 Android将通过删除该文件，如果它需要的空间照顾它。我会确保你没有创建在SD卡根目录下的tmp文件，因为这可能显得凌乱但除此之外，不应该是一个问题。

My application allows users to create and modify files. I would like them to be able to send a file as an email attachment. So, I need to first create and write to a temporary file, which I then attach to the email. And then I would like to delete the temporary file when the email program finishes. Unfortunately, the gmail app responds with a result code as soon as the user clicks "send"; and if I delete the file as soon as the result code is received, no attachment is sent.

Its possible that something else is going wrong and the attachment is not sent for a different reason, but I'm pretty sure my assessment is correct because the below code works properly if I comment out the mEmailTmpFile.delete() call. It also works fine if I do something very undesirable like Thread.sleep(4000) immediately prior to mEmailTmpFile.delete().

Is there anyway to be notified when the email is done sending? Or any other suggestions for how I should work around this?

//send an email...

File externalStorage = Environment.getExternalStorageDirectory();
String sdcardPath = externalStorage.getAbsolutePath();
mEmailTmpFile = new File(sdcardPath + "/" +  name );

//do some other to ensure unqiueness and then write to the file...

//all done writing, send email

Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.setType("application/zip");
sendIntent.putExtra(Intent.EXTRA_SUBJECT, name);
sendIntent.putExtra(Intent.EXTRA_TEXT, "File attached.");
sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"+ mEmailTmpFile.getPath()));
startActivityForResult(Intent.createChooser(sendIntent, "Email"), REQUESTCODE_EMAIL);

public synchronized void onActivityResult(int reqCode, int resultCode, Intent data)
{
   if (reqCode == REQUESTCODE_EMAIL)
   {
    mEmailTmpFile.delete();
    }
}

解决方案

In my apps, I don't delete the temporary file. Android will take care of it by deleting the file if it needs space. I would ensure that you don't create the tmp file in the SDCard root directory since that can look messy but other than that there shouldn't be a problem.

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