I have already researched the two functions, but everything I encounter is very vague.
I need to send an email from my application, directly to an email account (which is my user's).
And my other problem is to call the Gmail application from my app.
Use intent / content provider?
If you want to open only one email application with the recipient's email already filled in, just use this
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("mailto:" + url));
startActivity(intent);
If not the android developer page indicates using this form, more complete
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);
}
}
Android Developer Page:
link
You can use a ShareCompat.IntentBuilder if you are using compatibility library.
final Intent intent = ShareCompat.IntentBuilder.from(getActivity())
.setType("message/rfc822")
.setSubject("Seu assunto")
.setText("corpo do email")
.setChooserTitle("Titulo da tela de seleção")
.createChooserIntent();
startActivity(intent);
With this code the user can select any mobile application that can send a message, including GMAIL.
I hope I have helped.