SMS

1,

SmsManager smsManager = SmsManager.getDefault();
                String sms = smsEditText.getText().toString();
                ArrayList<String> smses = smsManager.divideMessage(sms);
                for (String s : smses) {
                    smsManager.sendTextMessage(phoneEditText.getText()
                            .toString(), null, s, null, null);
                    Toast.makeText(MainActivity.this, "发送成功", Toast.LENGTH_LONG)
                            .show();
                }

2,调用系统

Intent intent = new Intent(Intent.ACTION_SENDTO, Uri
                        .parse("sms:" + phoneEditText.getText().toString()));
                intent.putExtra("sms_body", smsEditText.getText().toString());
                startActivity(intent);