直接拨号

private void callPhone(){
            if(phoneNumber.length()>0){
                try {
                       Intent intent = new Intent(Intent.ACTION_CALL);
                       intent.setData(Uri.parse("tel:"+phoneNumber));
                       startActivity(intent);
                    } catch (Exception e) {
                        Toast.makeText(getApplicationContext(), "Problem calling number.", Toast.LENGTH_LONG).show();
                    }
                //startActivityForResult(new Intent(Intent.ACTION_CALL, Uri.parse("tel:+"+phoneNumber)), 1);
            }

        }