Android / General

Display a Toast.java

Toast.makeText(this, "Put your message here", Toast.LENGTH_SHORT).show();

Send an SMS.java

// AndroidManifest.xml must have the following permission:
// <uses-permission android:name="android.permission.SEND_SMS"/>
SmsManager m = SmsManager.getDefault();
String destinationNumber ="0123456789";  
String text = "Hello, MOTO!";  
m.sendTextMessage(destinationNumber, null, text, null, null);

Status Bar Notification.java

int notificationID = 10;
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// Create the notification
Notification notification = new Notification(R.drawable.yourIconId, "Put your notification text here", System.currentTimeMillis());
// Create the notification expanded message
// When the user clicks on it, it opens your activity
Intent intent = new Intent(this, YourActivityName.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
notification.setLatestEventInfo(this, "Put your title here", "Put your text here", pendingIntent);
// Show notification
notificationManager.notify(notificationID, notification);