How to send email to multiple recepients in android?

Question

I\'m a newbie in android. Please help me. I\'m not able to send email to multiple recipients. Here is my code.

public class SendEmailActivity extends Activit         


        

Answer 1

First your conversion from List to String[] is wrong you need to do as follows..

List<String> list = new ArrayList<String>();
String[] arrayOfStrings = list.toArray(new String[list.size()]);

And next thing is you need to mention android.Content.Intent as follows..

So finally you need to change as follows

ArrayList<String> emailList;
emailList = b.getStringArrayList("EmailList");
String[] emailArray;

Intent email = new Intent(android.content.Intent.ACTION_SEND);

for(int i = 0; i < to.length; i++){
    Log.i("String is", (String)to[i]);
    email.putExtra(android.content.Intent.EXTRA_EMAIL, 
                   emailList.toArray(new String[emailList.size()]));
}
email.putExtra(android.content.Intent.EXTRA_SUBJECT, subject);
email.putExtra(android.content.Intent.EXTRA_TEXT, message);    
email.setType("message/rfc822"); //or email.setType("text/plain");

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

Answer 2

Do not use

public Intent putExtra (String name, String value)

When setting email recipients, instead there is another method which accepts a string array which must be used for emails

public Intent putExtra (String name, String[] value)

So your block

for(int i = 0; i < to.length; i++)
{
    Log.i("String is", (String)to[i]);
    //String[] str = (String[])to[i];
    email.putExtra(Intent.EXTRA_EMAIL,",'" +(String)to[i] + "'");
}

Would simply become

email.putExtra(Intent.EXTRA_EMAIL, to);

See the android developer reference for more details on using Intents specifically the EXTRA_EMAIL argument which expects a string array, not a single string.

Answer 3

If I were you I would put this on a different thread so that you don't have any process on the Activity thread (or UI thread). This is a good android tutorial on how to do this. Threading is really important to understand in Android. If you have time I would watch this threading tutorial as well.

button.Onclick(){
  // get all the messages information
  // the button to send the emails has been collected
  new SendEmailTask().execute(messages)
}

Then in your Async Task you can send all of the messages

SendEmailTask extends AsyncTask<Message,Void,Void>(){

  function doInBackground(Message... msgs){
    for(Message m : msgs){
     // process each of your messages
     // send the messages out
    }
  }
  function onPostExecute(){
    // tell the UI thread that you are finished
  }

}

Good Luck!