Android calls the system SMS intent will be pre-filled to receive numbers and content

The previous world in an application calls the system to send the text message intent, but the receiver's number has been worn, the code is as follows:

The code is as follows
Uri Smstouri = Uri.parse ("smsto:123456");
Intent sendintent = new Intent (Intent.action_view, Smstouri);
Sendintent.putextra ("Sms_body", "Hello Dear World");
Sendintent.settype ("vnd.android-dir/mms-sms");
StartActivity (sendintent);

And then find out the reason is that this URI format can not automatically parse out, you need to set a different recipient address, the code is as follows:

The code is as follows
Sendintent.putextra ("Address", "123456");