如何向Android中的多个收件人发送电子邮件?

时间:2013-01-24 08:17:35

标签: android email

我是android的新手。请帮我。我无法向多个收件人发送电子邮件。 这是我的代码。

public class SendEmailActivity extends Activity{

EditText subject_ed,message_ed;
TextView subject_tv,message_tv;
Button send_btn;

 ArrayList<String> emailList;
 ArrayList<Integer> idList;
 int eventId;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.contacts_email_sms_layout);
    setupViews();
    Intent intent = getIntent();
    Bundle b = intent.getExtras();
    eventId =  b.getInt("EventId");//event id
    idList = b.getIntegerArrayList("IdList");//list of Ids
    emailList = b.getStringArrayList("EmailList");//list of email ids
    buttonListeners();
}

public void setupViews()
{
    subject_ed = (EditText)findViewById(R.id.ed_subject_email);
    message_ed = (EditText)findViewById(R.id.ed_msg_body);
    subject_tv = (TextView)findViewById(R.id.tv_subject_email);
    message_tv = (TextView)findViewById(R.id.tv_msg_body);
    send_btn = (Button)findViewById(R.id.btn_send_sms_email);
}               

public void buttonListeners()
{
    send_btn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(), "Email sent",Toast.LENGTH_LONG).show();
            // String to = textTo.getText().toString();
              String subject = subject_ed.getText().toString();
              String message = message_ed.getText().toString();
            Object[] to =  emailList.toArray();
//            for(int i = 0; i<=emailList.size(); i++)
////                  {
////                      
//                  String  to=   emailList.get(0);
////                     
////                  }



              Intent email = new Intent(Intent.ACTION_SEND);
              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] + "'");
                }

              email.putExtra(Intent.EXTRA_SUBJECT, subject);
              email.putExtra(Intent.EXTRA_TEXT, message);

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

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

}

3 个答案:

答案 0 :(得分:4)

首先你从List转换为String []是错误的,你需要做如下的事情。

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

接下来你需要提到android.Content.Intent如下..

所以最后你需要改变如下

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 :"));

答案 1 :(得分:1)

不要使用

public Intent putExtra (String name, String value)

设置电子邮件收件人时,有另一种方法接受必须用于电子邮件的字符串数组

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

所以你的块

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] + "'");
}

只会变成

email.putExtra(Intent.EXTRA_EMAIL, to);

有关使用Intents特别是EXTRA_EMAIL参数的更多详细信息,请参阅android开发人员参考,该参数需要字符串数组,而不是单个字符串。

答案 2 :(得分:0)

如果我是你,我会把它放在一个不同的线程上,这样你就不会在Activity线程(或UI线程)上有任何进程。关于如何做到这一点,这是一个很好的android tutorial。在Android中理解线程非常重要。如果你有时间,我也会看这个threading tutorial

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

然后在您的异步任务中,您可以发送所有消息

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
  }

}

祝你好运!