android导出到csv并作为电子邮件附件发送 [英] android exporting to csv and sending as email attachment

问题描述

我在本网站看到过多个线程，讨论在android中发送附件的电子邮件。我尝试了所有方法 here ，此处和这里。

I have seen multiple threads in this site discussing about sending email with attachments in android. I tried every methods discussed here, here and here.

我通过代码和保存来创建一个csv文件这个文件到android内部存储。然后我想发送这个文件作为附件在一封电子邮件。那个电子邮件正在发送，我没有附件。这是我所做的。

I am creating a csv file via code and saving this file to android internal storage. Then I want to send this file as attachment in an email. Well, the email is being sent, I am getting it without attachment. This is what I have done.

String columnString         =   "\"Person\",\"Gender\",\"Street1\",\"PostOfice\",\"Age\"";
String dataString           =   "\"" + currentUser.userName +"\",\"" + currentUser.gender + "\",\"" + currentUser.street1 + "\",\"" + currentUser.poNumber.toString() + "\",\"" + currentUser.age.toString() + "\"";
String combinedString       =   columnString + "\n" + dataString;
File file                   =   new File(this.getCacheDir()+ File.separator + "Data.csv");
try {
    FileOutputStream out    =   new FileOutputStream(file);
    out.write(combinedString.getBytes());
    out.close();
} catch (IOException e) {
    Log.e("BROKEN", "Could not write file " + e.getMessage());
}   
Uri u1                      =   Uri.fromFile(file);

Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_SUBJECT, "Person Details");
sendIntent.putExtra(Intent.EXTRA_STREAM, u1);
sendIntent.setType("text/richtext");
startActivity(sendIntent);

我尝试将mime设置更改为text / html和text / richtext等，但没有好运气任何人都可以告诉我我做错了什么？

I tried changing mime settings to "text/html" and "text/richtext" etc. But no luck yet. Can anyone tell me what I am doing wrong?

推荐答案

感谢所有试图帮助的人。从我的应用程序发送电子邮件附件..这是工作代码..

Thanks for everyone who tried to help..After taking a full day I have send an email from my app with attachment..This is the working code..

String columnString =   "\"PersonName\",\"Gender\",\"Street1\",\"postOffice\",\"Age\"";
String dataString   =   "\"" + currentUser.userName +"\",\"" + currentUser.gender + "\",\"" + currentUser.street1 + "\",\"" + currentUser.postOFfice.toString()+ "\",\"" + currentUser.age.toString() + "\"";
String combinedString = columnString + "\n" + dataString;

File file   = null;
File root   = Environment.getExternalStorageDirectory();
if (root.canWrite()){
    File dir    =   new File (root.getAbsolutePath() + "/PersonData");
     dir.mkdirs();
     file   =   new File(dir, "Data.csv");
     FileOutputStream out   =   null;
    try {
        out = new FileOutputStream(file);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        try {
            out.write(combinedString.getBytes());
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
Uri u1  =   null;
u1  =   Uri.fromFile(file);

Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_SUBJECT, "Person Details");
sendIntent.putExtra(Intent.EXTRA_STREAM, u1);
sendIntent.setType("text/html");
startActivity(sendIntent);

另外如果您将手机SDCard挂载在机器中，则此代码不起作用。一次只能使用一张SDCard。所以在这种情况下，从计算机上卸载你的SDCard，然后尝试。谢谢那个回答了这里 ..还要确保您已经获得了在清单文件中写入外部存储的权限...

Also If you have mounted your phone SDCard in the machine , this code wont work. Only one can access SDCard at one time. So in that case unmount your SDCard from computer and try..Thanks to the guy who answered here..Also make sure you have bought permission to write to external Storage in your manifest file...

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

希望它帮助某人...感谢所有试图帮助的人..

Hope it helps someone...Thanks for everyone who tried to help..

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