Android：Email'to'field empty

Question

我正在爲酒店開發應用程序，在預訂房間時，應用程序會向用戶發送的電子郵件ID發送電子郵件。現在，我知道它會使用我的默認電子郵件客戶端之一，這是Gmail。問題在於，它顯示了gmail的撰寫郵件窗口，郵件正文中顯示了我的消息，但'to'字段爲空。任何幫助？

這裏是代碼：

public void sendmail(View vw) 
    { 
     name=et1.getText().toString(); 
     to=et2.getText().toString(); 
     phone=et3.getText().toString(); 
     addr=et4.getText().toString(); 
     Log.i("Send email", ""); 
     Intent emailIntent = new Intent(Intent.ACTION_SEND); 
     emailIntent.setData(Uri.parse("mailto:")); 
      emailIntent.setType("text/plain"); 
      emailIntent.putExtra(Intent.EXTRA_EMAIL, to); 
      emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Thanks for using our app"); 
      emailIntent.putExtra(Intent.EXTRA_TEXT, "Hello mr"+name+"We just received an email with your details asking for a reservation:"+phone+" "+addr+"for room number"+x+""); 
      try { 
       startActivity(Intent.createChooser(emailIntent, "Send mail...")); 
       finish(); 
       Log.i("Finished sending email...", ""); 
      } 
      catch (android.content.ActivityNotFoundException ex) { 
       Toast.makeText(getBaseContext(), "There is no email client installed.", Toast.LENGTH_SHORT).show(); 
      } 
    } 


} 

Answer 1

從EXTRA_EMAIL的documentation：

應該交付給的String []控股的e-mail地址。

像這樣的東西應該工作：

Intent mailIntent = new Intent(Intent.ACTION_SENDTO); 
mailIntent.setData(Uri.parse("mailto:")); 
mailIntent.putExtra(Intent.EXTRA_EMAIL, new String[]{to}); 
mailIntent.putExtra(Intent.EXTRA_SUBJECT, "Thanks for using our app"); 
mailIntent.putExtra(Intent.EXTRA_TEXT, "Hello mr"+name+"We just received an email with your details asking for a reservation:"+phone+" "+addr+"for room number"+x+""); 
if (mailIntent.resolveActivity(getPackageManager()) != null) { 
    startActivity(mailIntent); 
} else { 
    // no e-mail app installed 
} 

Answer 2

試試這個：

emailIntent.putExtra(Intent.EXTRA_EMAIL , new String[]{"recipient@to.com"}); 

電子郵件意圖期待一個String數組，但你提供string.So，它不是在你的工作案件！