title: Send text to specific contact programmatically (whatsapp)
body: <p>I wanted to know how I can send text to a specific whatsapp contact. I found some code to view a specific contact, but not to send data.</p>
  
  <pre><code>Cursor c = getContentResolver().query(ContactsContract.Data.CONTENT_URI,
      new String[] { ContactsContract.Contacts.Data._ID }, ContactsContract.Data.DATA1 + "=?",
      new String[] { id }, null);
  c.moveToFirst();
  Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("content://com.android.contacts/data/" + c.getString(0)));
  
  startActivity(i);
  c.close();
  </code></pre>
  
  <p>This works fine for viewing a whatsapp-contact, but how can I add some text now? Or didn't the Whatsapp-developer implement such kind of an api?</p>