Envoi d'un SMS sous Android

SendSmsActivity.java

public class SendSmsActivity extends AppCompatActivity {
  ...
  private void sendSms(String recipient, String message) {
    try {
      SmsManager smsManager = SmsManager.getDefault();
      smsManager.sendTextMessage(recipient, null, message, null, null);
    } catch (Exceptione e) {
      e.printStackTrace();
  }
}

AndroidManifest.xml

...
<uses-permission android:name="android.permission.SEND_SMS" />
...