HI ,
I'm trying the understand how an application can receive intent in
BroadcastReceiver & how it can inform the Activity abt the information
received in the intent.
For this purpose I have created an activity which has a TextView. In
OnCreate of the Activity I'm using AlarmManager to start sending
intents every 10 sec to broadcast receiver of my application. On
receiving this intent I would like to update the text view with the
current time.
>From the documention I understand that we need to be using the
NotificationManager instead of trying to directly updating the UI.
Can some one pls let me know how I can achieve this.
Code snippets:
public class myFaves extends Activity
{
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mCurrentTime = (TextView) findViewById(R.id.curtime_label);
startUpdatingCurrentTime();
}
protected void onPause()
{
super.onPause();
cancelUpdatingCurrentTime();
}
private void startUpdatingCurrentTime()
{
Intent intent = new Intent(MyTimer.this, MyTimerReceiver.class);
PendingIntent sender = PendingIntent.getBroadcast(MyTimer.this, 0,
intent, 0);
// We want the alarm to go off every second from now.
long firstTime = SystemClock.elapsedRealtime();
firstTime += 10000;
// Schedule the alarm!
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstTime,
10000, sender);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
mCurrentTime.setText( calendar.getTime().toString());
}
public void cancelUpdatingCurrentTime()
{
Intent intent = new Intent(MyTimer.this, MyTimerReceiver.class);
PendingIntent sender = PendingIntent.getBroadcast(MyTimer.this, 0,
intent, 0);
// And cancel the alarm.
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.cancel(sender);
}
}
public class MyTimerReceiver extends BroadcastReceiver
{
protected static final String LOG_TAG = "MyTimer";
@Override
public void onReceive(Context context, Intent intent)
{
Log.d(LOG_TAG, "onReceive");
// How do I update the TextView with
current time in my activity?
}
}
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