操作\u发送android.content.Intent.EXTRA\u电子邮件android.content.Intent.EXTRA\u主题android.content.Intent.EXTRA\u文本您可以这样做尝试…：）有什么问题？应用程序崩溃了

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操作\u发送android.content.Intent.EXTRA\u电子邮件android.content.Intent.EXTRA\u主题android.content.Intent.EXTRA\u文本您可以这样做尝试…：）有什么问题？应用程序崩溃了吗？有错误吗？检查堆栈溢出的这个链接可能会有帮助@Shreya S:No errors。。它根本不发送电子邮件。。把邮件拿出来。但我根本无法发送电子邮件，从列表到字符串[]的转换错误，即List List=new ArrayList（）；String[]ArrayOfString=list.toArray（新字符串[list.size（）]）；实际上，您需要这样做。在Intent之前，您可以添加android.content.Intent.ACTION\u发送android.content.Intent.EXTRA\u电子邮件android.content.Intent.EXTRA\u主题android.content.Intent.EXTRA\u您可以这样做尝试…：）尝试使用

public Intent putStringArrayListExtra（字符串名称，ArrayList值）

并将emailList作为值传递-我刚刚注意到，由于toArray方法的返回值可能会导致问题，to被声明为Object[]而不是String[]，我的一半问题现在已经解决了。请按照Harish的建议执行。地址出现在电子邮件客户端的“收件人”字段中，但电子邮件不会发送，即使它显示发送消息，这将是我的下一个建议，我认为字符串数组列表额外方法将只是一个方便的方法，很高兴听到您将其排序：）尝试使用

public Intent putStringArrayListExtra（字符串名称，ArrayList值）

并将emailList作为值传递-我刚刚注意到to被声明为Object[]而不是String[]由于toArray方法的返回值可能会导致问题，我的一半问题现在已解决。请按照Harish的建议进行操作。地址出现在电子邮件客户端的“收件人”字段中，但电子邮件不会发送，即使它显示发送消息，这将是我的下一个建议，我认为字符串数组列表额外方法将只是一个方便的方法，很高兴听到你把它整理好：）非常感谢你的帮助：）非常感谢你的帮助：）

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();
        }
    });
}

}

public Intent putExtra (String name, String value)

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

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_EMAIL, to);

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

}

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

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 :"));