通过Gmail发送电子邮件

Question

我有一个火灾意图发送电子邮件的代码

Intent i = new Intent(Intent.ACTION_SEND);
i.setType("text/plain");
i.putExtra(Intent.EXTRA_EMAIL,
                new String[] { to });
i.putExtra(Intent.EXTRA_SUBJECT, subject);
i.putExtra(Intent.EXTRA_TEXT, msg);
try {
    startActivity(Intent.createChooser(i, "Send mail..."));
} catch (android.content.ActivityNotFoundException ex) {
    Toast.makeText(Start.this,
                    "There are no email clients installed.",
                    Toast.LENGTH_SHORT).show();
}

但是当这个意图被解雇时,我在列表中看到很多项目,如sms app,gmail app,facebook app等等.

如何过滤此功能并仅启用gmail应用(或者只是电子邮件应用)？

Answer 1

使用android.content.Intent.ACTION_SENDTO(new Intent(Intent.ACTION_SENDTO);)只获取电子邮件客户端列表,没有Facebook或其他应用程序.只是电子邮件客户端.

我不建议你直接进入电子邮件应用程序.让用户选择他最喜欢的电子邮件应用.不要约束他.

如果您使用ACTION_SENDTO,则putExtra无法向主题添加主题和文本.使用Uri添加主题和正文.

例

Intent send = new Intent(Intent.ACTION_SENDTO);
String uriText = "mailto:" + Uri.encode("email@gmail.com") + 
          "?subject=" + Uri.encode("the subject") + 
          "&body=" + Uri.encode("the body of the message");
Uri uri = Uri.parse(uriText);

send.setData(uri);
startActivity(Intent.createChooser(send, "Send mail..."));

Answer 2

接受的答案不适用于4.1.2.这适用于所有平台:

Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts(
            "mailto","abc@gmail.com", null));
emailIntent.putExtra(Intent.EXTRA_SUBJECT, "EXTRA_SUBJECT");
startActivity(Intent.createChooser(emailIntent, "Send email..."));

希望这可以帮助.

Answer 3

Igor Popov的答案是100%正确,但如果你想要一个后备选项,我使用这个方法:

public static Intent createEmailIntent(final String toEmail, 
                                       final String subject, 
                                       final String message)
{
    Intent sendTo = new Intent(Intent.ACTION_SENDTO);
    String uriText = "mailto:" + Uri.encode(toEmail) +
            "?subject=" + Uri.encode(subject) +
            "&body=" + Uri.encode(message);
    Uri uri = Uri.parse(uriText);
    sendTo.setData(uri);

    List<ResolveInfo> resolveInfos = 
        getPackageManager().queryIntentActivities(sendTo, 0);

    // Emulators may not like this check...
    if (!resolveInfos.isEmpty())
    {
        return sendTo;
    }

    // Nothing resolves send to, so fallback to send...
    Intent send = new Intent(Intent.ACTION_SEND);

    send.setType("text/plain");
    send.putExtra(Intent.EXTRA_EMAIL,
               new String[] { toEmail });
    send.putExtra(Intent.EXTRA_SUBJECT, subject);
    send.putExtra(Intent.EXTRA_TEXT, message);

    return Intent.createChooser(send, "Your Title Here");
}

Answer 4

这是从Android官方文档引用的,我在Android 4.4上测试过它,并且运行得很好.有关更多示例,请访问https://developer.android.com/guide/components/intents-common.html#Email

  public void composeEmail(String[] addresses, String subject) {
        Intent intent = new Intent(Intent.ACTION_SENDTO);
        intent.setData(Uri.parse("mailto:")); // only email apps should handle this
        intent.putExtra(Intent.EXTRA_EMAIL, addresses);
        intent.putExtra(Intent.EXTRA_SUBJECT, subject);
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        }
    }

Answer 5

更换

i.setType("text/plain");

同

// need this to prompts email client only
i.setType("message/rfc822");