调用短信功能

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            String defaultSmsPackageName = Telephony.Sms.getDefaultSmsPackage(this); //Need to change the build to API 19
            Intent sendIntent = new Intent(Intent.ACTION_SEND);
            sendIntent.setType("text/plain");
            sendIntent.putExtra(Intent.EXTRA_TEXT, smsBody);
            if (defaultSmsPackageName != null) {
                sendIntent.setPackage(defaultSmsPackageName);
            }
            startActivity(sendIntent);
        } else {
            Intent sendIntent = new Intent(Intent.ACTION_VIEW);
            sendIntent.setData(Uri.parse("sms:"));
            sendIntent.putExtra("sms_body", smsBody);
            startActivity(sendIntent);
        }