Inside: Toast, Notification, Threading, BroadcastReceiver and Alarms.

1. Cloud
InteractionDesign
Android

2. Toast

3. Toast

4. Toast
Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();

5. Notifications

6. Notifications

7. Five priority levels:
– PRIORITY_MIN (-2) to PRIORITY_MAX (2);
– if not set, the priority defaults to PRIORITY_DEFAULT (0).
NotificationsPriorities

8. Notifications
NotificationCompat.Builder mBuilder = new
NotificationCompat.Builder(this)
.setSmallIcon(android.R.drawable.stat_notify_more)
.setContentTitle("My notification")
.setContentText("Hello World!");

9. Notifications
NotificationCompat.Builder mBuilder = new
NotificationCompat.Builder(this)
.setSmallIcon(android.R.drawable.stat_notify_more)
.setContentTitle("My notification")
.setContentText("Hello World!");

10. Threads
UI Thread, AsyncTask, Handler

11. BroadcastReceiver class

12. Alarms

13. Alarms / Scheduling

14. Google Cloud Messaging (GCM)
with SyncAdapter

15. Alarms Use Cases
• MMS – Retry Scheduler
• Bluetooth [Discoverable] Timeout
• Notifications
• Syncing data with the server
• ..etc.

16. Alarms Firing
• ELAPSED_REALTIME
– Fires the pending intent based on the amount of time since the device was booted, but doesn't
wake up the device. The elapsed time includes any time during which the device was asleep.
• ELAPSED_REALTIME_WAKEUP
– Wakes up the device and fires the pending intent after the specified length of time has elapsed
since device boot.
• RTC
– Fires the pending intent at the specified time but does not wake up the device.
• RTC_WAKEUP
– Wakes up the device to fire the pending intent at the specified time.
https://developer.android.com/training/scheduling/alarms.html

17. ELAPSED_REALTIME_WAKEUP
private AlarmManager alarmMgr;
alarmMgr.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
AlarmManager.INTERVAL_HALF_HOUR,
AlarmManager.INTERVAL_HALF_HOUR, alarmIntent);

18. RTC
private AlarmManager alarmMgr;
// Set the alarm to start at approximately 2:00 p.m.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 14);
alarmMgr.setInexactRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY,
alarmIntent);

19. Back to
BroadcastReceiver
class

20. Fire Alarm on Booting Example

21. BroadcastReceiver on Booting
• Add a permission:
<uses-­‐permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
• Implement a BroadcastReceiver called SampleBootReceiver:
public class SampleBootReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
// Set the alarm here.
}
}
}
• Set the SampleBootReceiver to fire on Boot:
<receiver android:name=".SampleBootReceiver"
android:enabled="false">
<intent-­‐filter>
<action android:name="android.intent.action.BOOT_COMPLETED"></action>
</intent-­‐filter>
</receiver>

22. BroadcastReceiver on Booting
• Add a permission:
<uses-­‐permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
• Implement a BroadcastReceiver called SampleBootReceiver:
public class SampleBootReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
// Set the alarm here.
}
}
}
• Set the SampleBootReceiver to fire on Boot:
<receiver android:name=".SampleBootReceiver"
android:enabled="false">
<intent-­‐filter>
<action android:name="android.intent.action.BOOT_COMPLETED"></action>
</intent-­‐filter>
</receiver>

23. BroadcastReceiver on Booting
• Add a permission:
<uses-­‐permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
• Implement a BroadcastReceiver called SampleBootReceiver:
public class SampleBootReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
// Set the alarm here.
}
}
}
• Set the SampleBootReceiver to fire on Boot:
<receiver android:name=".SampleBootReceiver"
android:enabled="false">
<intent-­‐filter>
<action android:name="android.intent.action.BOOT_COMPLETED"></action>
</intent-­‐filter>
</receiver>