如何在点击按钮的Android Studio上发送邮件？

我想发送电子邮件，单击按钮时，我想查看基于电子邮件的应用程序列表。当我使用下面的源代码时，它会输出所有基于消息的应用程序，如图所示

Intent intent2 = new Intent(Intent.ACTION_SEND);
intent2.setData(Uri.parse("mailto:"));
intent2.setType("plain/text");
intent2.putExtra(Intent.EXTRA_EMAIL, new String[]{email});
startActivity(intent2);

当我点击按钮时，这些应用程序就会显示出来

但我只想要基于电子邮件的应用程序，例如我应该更改什么才能获得这样的应用程序列表？

您可以使用此

 btnReport.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String mailto = "mailto:useremail@gmail.com" +
                    "?cc=" +
                    "&subject=" + Uri.encode("your subject") +
                    "&body=" + Uri.encode("your mail body");
            Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
            emailIntent.setData(Uri.parse(mailto));

            try {
                startActivity(emailIntent);
            } catch (ActivityNotFoundException e) {
                Toast.makeText(context, "Error to open email app", Toast.LENGTH_SHORT).show();
            }
        }
    });

你可以用这个

 btnReport.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String mailto = "mailto:useremail@gmail.com" +
                    "?cc=" +
                    "&subject=" + Uri.encode("your subject") +
                    "&body=" + Uri.encode("your mail body");
            Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
            emailIntent.setData(Uri.parse(mailto));

            try {
                startActivity(emailIntent);
            } catch (ActivityNotFoundException e) {
                Toast.makeText(context, "Error to open email app", Toast.LENGTH_SHORT).show();
            }
        }
    });

---

只需在你的onClicklistener中调用电子邮件意图

Intent email = new Intent(Intent.ACTION_SEND);  
email.putExtra(Intent.EXTRA_EMAIL, new String[]{ to});  
email.putExtra(Intent.EXTRA_SUBJECT, subject);  
email.putExtra(Intent.EXTRA_TEXT, message);  

//need this to prompt`enter code here`s email client only  
email.setType("message/rfc822");  

startActivity(Intent.createChooser(email, "Choose an Email client :"));  

---

只需在你的onClicklistener中调用电子邮件意图

Intent email = new Intent(Intent.ACTION_SEND);  
email.putExtra(Intent.EXTRA_EMAIL, new String[]{ to});  
email.putExtra(Intent.EXTRA_SUBJECT, subject);  
email.putExtra(Intent.EXTRA_TEXT, message);  

//need this to prompt`enter code here`s email client only  
email.setType("message/rfc822");  

startActivity(Intent.createChooser(email, "Choose an Email client :"));  

---

不使用Send可消除附件的使用。不使用Send可消除附件的使用。无更改，它还显示WhatsApp、电报、蓝牙应用无更改，它还显示WhatsApp、电报、蓝牙应用