java试图通过电子邮件发送文件

Question

我正在尝试在我的应用程序中通过电子邮件发送我的CSV文件。当我点击send时，手机会显示我要发送给的人、主题、信息和附件，但当我点击send时，手机会显示“无法显示附件”。当我检查邮箱时，邮件就在那里，但没有文件

String to=destinatario.getText().toString().trim();
                String subj=subject.getText().toString().trim();
                String msg=message.getText().toString().trim();

                if(to.length() < 1)
                {
                    Toast.makeText(getApplicationContext(), "Mete para quem quer mandar", Toast.LENGTH_LONG).show();
                }
                else if (subj.length() < 1) {
                    Toast.makeText(getApplicationContext(), "Introduza o Tema", Toast.LENGTH_LONG).show();
                }
                else if (msg.length() < 1) {
                    Toast.makeText(getApplicationContext(), "Introduza Mensagem", Toast.LENGTH_LONG).show();
                }
                else {
                    Intent emailIntent = new Intent(安卓.content.Intent.ACTION_SEND); 
                    //emailIntent.setType("image/jpeg");
                    emailIntent.setType("message/rfc822");
                    emailIntent.putExtra(安卓.content.Intent.EXTRA_EMAIL, new String[]{to}); 
                    emailIntent.putExtra(安卓.content.Intent.EXTRA_SUBJECT, subj); 
                    emailIntent.putExtra(安卓.content.Intent.EXTRA_TEXT, msg); 
                    emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(file.getAbsolutePath()));
                    startActivity(Intent.createChooser(emailIntent, "A enviar..."));
                }   
            }

有人知道为什么会这样吗

Answer 1

更改额外的流Uri。将字符串解析为"file://" + file.getAbsolutePath()

只要你的文件是正确的，这就应该有效

Answer 2

我使用以下代码创建带有csv附件的意图

ArrayList<Uri> uriList = new ArrayList<Uri>();
    ArrayList<String> fileNameList = new ArrayList<String>();
    uriList.add(Uri.fromFile(f));
    fileNameList.add(f.getName());

    final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND_MULTIPLE);
    emailIntent.setType("text/plain");
    emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,
            new String[]{""});
    emailIntent.putExtra(android.content.Intent.EXTRA_CC,
            new String[]{""});
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Log");

    if (!uriList.isEmpty()) {
        emailIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uriList);
        emailIntent.putStringArrayListExtra(Intent.EXTRA_TEXT, fileNameList);
    }