This is my code:
public class Alarm extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
intent, PendingIntent.FLAG_ONE_SHOT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (10 * 1000), pendingIntent);
Toast.makeText(this, "Alarm set", Toast.LENGTH_LONG).show();
}
}
and
public final class AlarmReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarm worked.", Toast.LENGTH_LONG).show();
}
}
By the above code i am able to get the Toast. Instead of Toast I want the Dialog to be appear after the alarm is set. Also I want to play the sound.
Any one help me please?
You cannot display a Dialog from a BroadcastReceiver or Service. You will be better served using an Activity (perhaps one using Theme.Dialog) and calling startActivity().
Bear in mind, though, that users tend to really dislike it when background stuff pops up activities unannounced. For some apps -- alarm clocks, VOIP clients, etc. -- the user may be OK with it.
There is a cool trick to do that.
Here are the steps to do it:
Place the BroadcastReceiver inside your Activity as an inner class.
Instead of adding the BroadcastReceiver in the manifest, you register yourself in the onStart() method of your Activity.
You unregister in the onPause() method of your Activity.
Inside the BroadcastReceiver you can call an Activity's method that do exactly what you ask for.
Related
At point A in my application I start my service and expect the service get closed from point B. However, there might be few scenarios that point B doesn't ask service to get closed. In this case I want the service close itself after fixed amount of time.
I have written following code into my Service class and expect the service gets closed after 10 seconds from launch time (It will be 45min in the future but I don't want to stay that long for test).
public class ChatService extends Service implements ITCPConnection
{
private static final int SERVICE_LIFE_TIME = 10 * 1000; // In millis
private AlarmReceiver mAlarmReceiver;
private AlarmManager alarmMgr;
private PendingIntent alarmIntent;
#Override
public void onCreate()
{
super.onCreate();
//
mAlarmReceiver = new AlarmReceiver();
registerReceiver(mAlarmReceiver, new IntentFilter());
//
Intent intent = new Intent(this, AlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmMgr.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + SERVICE_LIFE_TIME, alarmIntent);
}
#Override
public void onDestroy()
{
super.onDestroy();
Log.e(TAG, "onDestroy()");
// Unregister receiver
if (mAlarmReceiver != null)
{
unregisterReceiver(mAlarmReceiver);
}
disconnect();
}
public void disconnect()
{
// If the alarm has been set, cancel it.
if (alarmMgr!= null)
{
alarmMgr.cancel(alarmIntent);
}
...
Log.e(TAG, "disconnect()");
}
/*****************
* Alarm Receiver
*****************/
private static class AlarmReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
Log.e(TAG, "Stop service from AlarmReceiver");
context.stopService(intent);
}
}
}
My problem is AlarmReceiver.onReceive() never gets called and therefore my service will be alive indefinitely.
What you are trying to do is to targeting a broadcast receiver explicitly.
According to this, it cannot be done over a dinamically created (i.e. not declared into the manifest) broadcast receiver, because the os would not know how to resolve it.
To check if this is the root of the problem, you can go with the implicit way and set an action inside the intent and by filtering it in the IntentFilter.
Anyway, using the post delayed can be seen as a valid alternative, since you expect the service to be shut down naturally or still be around to intercept the delayed event.
Another (unrelated) thing is that you are calling
context.stopService(intent);
by using the broadcast intent and not the intent that started the service. You could simply call stopSelf().
I'm working on app in which I want to schedule service in a interval of 6 hours. I'm calling this method from main activity. When this activity open then it call this method and hits the service. I don't want to execute it whenever this method executes. After first exceution of this service it should execute after 6 hours or so not app open. Is there any flag or something I need to do set to do that.
public static void scheduleHeartBeat(Context mContext) {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(mContext);
Intent myIntent = new Intent(mContext, HearBeatService.class);
PendingIntent pendingIntent = PendingIntent.getService(mContext, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() , 6*60*60*1000, pendingIntent);
}
public class HearBeatService extends IntentService {
public HearBeatService() {
super("HearBeatService");
}
#Override
protected void onHandleIntent(Intent intent) {
Log.d("HeartBeat", "Hey Testing!!!");
}
}
MainActivity.java
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
.....
scheduleHeartBeat(this);
...
}
Thanks in advance.
User broadcastreceiver.
Create class that extends Intent service class
Create class that broadcastreceiver class and call the Intent service (from step1)
Create pending intent for the broadcastreciever(from step2)
Register the pending intent with alarm manager of 6 hours delay
Dont Forget to register your service and receiver in the android manifest.
I want to make a service in android which run in background always and start as soon as I boot my phone and send message at a regular interval.I have writen my code as below
MainActivity.class
package test.sai;
public class MainActivity extends Activity {
Timer t;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
alrm();
Log.e("msg", "in main");
}
public void alrm() {
Intent myAlarm = new Intent(getApplicationContext(), AlarmReceiver.class);
Log.e("msg", "in alrm");
//myAlarm.putExtra("project_id", project_id); //Put Extra if needed
PendingIntent recurringAlarm = v PendingIntent.getBroadcast(getApplicationContext(), 0, myAlarm, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarms = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
Calendar updateTime = Calendar.getInstance();
Log.e("msg", "in alrm1");
//updateTime.setWhatever(0);
alarms.setInexactRepeating(AlarmManager.RTC_WAKEUP, updateTime.getTimeInMillis(), AlarmManager.INTERVAL_FIFTEEN_MINUTES, recurringAlarm); //you can modify the interval of course
}
}
This class is calling AlarmReceiver.class
package test.sai;
public class AlarmReceiver extends BroadcastReceiver
{
GPSTracker gps;
#Override
public void onReceive(Context context, Intent intent)
{
gps = new GPSTracker(context);
if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
Intent pushIntent = new Intent(context,MainActivity.class);
pushIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(pushIntent);
Log.e("pro", "alrmmanager");
}
Intent myService = new Intent(context, FirstService.class);
myService.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startService(myService);
Log.e("msg", "in alrmmanager1");
}
}
and finally AlarmReceiver is calling the service class
package test.sai;
public class FirstService extends Service{
Timer t;
int time = 0;
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onStart(Intent intent, int startId) {
Log.e("time", time++ +"");
Toast.makeText(this, time+1+"", 500).show();
}
#Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
}
Now I want to on GPS as soon as service starts and then I want to use GPS to track location of mobile and send a message to another mobile.I also have code for GPS and sms sending but I am not getting how to call and where to call those methodss,so that my service keep on running and sending messages at some perticular interval.please help.
You can use alarmManager for this... Because if you create your own timerTask, it is very much susceptible to get destroyed by the processor.
To answer your two part question:
First you need to learn how to handle onBoot within Android Framework. Refer to this Q/A Trying to start a service on boot on Android
Lastly you need to understand the SMSManager class. Refer to the documentation http://developer.android.com/reference/android/telephony/SmsManager.html
I don't think anyone should provide complete code for your request as your main problem/question is "How can I help myself and stop looking for others to fix all my problems".
Try registering a BroadcastReceiver with AlarmManager to receive an intent at your regular interval. You'll probably want two, one that listens for a BOOT_COMPLETED action, and another that the AlarmManager will start on interval. You can have the second receiver start a service if whatever you want to do will take a while to execute.
Here's a question on how to make the receiver run on boot so you can register the other receiver with AlarmManager:
Android BroadcastReceiver on startup
Here's another that wants pretty much the same thing you want, minus the SMS:
How to Autostart an AlarmManager to start a Scheduled Activity?
I have application, which makes event in alarm manager, and at specific time its called.
Code looks like this
Intent intent = new Intent(this, AlarmActivity.class);
pendingIntent = PendingIntent.getActivity(this,req_code, intent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager am = (AlarmManager)getSystemService(Activity.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),AlarmManager.INTERVAL_DAY*7,
pendingIntent);
Intent calls this activity.
public class AlarmActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public void onStart(){
super.onStart();
//Change ringer mode
//Add notification in status bar
//Other booring stuff here...
Toast.makeText(this,"Finishing",2000).show();
finish();
}
}
in booring stuffthere are is code which should run in background (change ringermode)
Everything works for me, except one thing. Whenever the alarm manager calls my activity - the application comes to foreground.
When it only should change ringer mode in background, and add notification in status bar.
Any way to not allow application come to foreground?
You should do all of this in a BroadCastReceiver. There is no UI, and there is a Context variable passed on to the Receiver's onReceive() method which allows you to basically do anything the Activity does, without having an actual UI. This means that you can set the ringer, show the status bar notification, etc.
Your BroadcastReceiver class should look something like:
public class AlarmBroadcastReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
//Change ringer mode
//Add notification in status bar
//Other boring stuff here...
Toast.makeText(context,"Finishing",2000).show();
}
}
Note that for your Toast, the variable named context is used.
And your AlarmManager code should look something like this:
Intent intent = new Intent(this, AlarmBroadcastReceiver.class);
pendingIntent = PendingIntent.getBroadcast(this,req_code, intent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager am = (AlarmManager)getSystemService(Activity.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),AlarmManager.INTERVAL_DAY*7,
pendingIntent);
Your manifest should have this:
<receiver android:name=".AlarmBroadcastReceiver" >
</receiver>
Add this line to the Activity in your AndroidManifest
android:theme="#android:style/Theme.NoDisplay"
and you have an Activity with nothing to display. Since you are already calling finish(); in your code, it will look like it is running in background.
I am new to Android. I am trying to develop an Alarm Application, which is actually a speaking clock. I just want the clock to use TextToSpeech API and speak out the greeting stuff and the current time as soon as the alarm time is ticked. The speech part is done. And now I want to implement the Alarm functionality. But Initially I am just trying to display a toast after 10 secs in order to check whether my classes are working properly. And I am not getting the desired response and I don't know why ? Following are the classes
Main Class aClockActivity
public class aClockActivity extends Activity {
/** Called when the activity is first created. */
private PendingIntent mAlarmSender;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button1 = (Button)findViewById(R.id.buttonOn);
button1.setOnClickListener(mStartAlarmListener);
Button button2 = (Button)findViewById(R.id.buttonOff);
button2.setOnClickListener(mStopAlarmListener);
}
private OnClickListener mStartAlarmListener = new OnClickListener() {
public void onClick(View v) {
// We want the alarm to go off 30 seconds from now.
//long firstTime = SystemClock.elapsedRealtime();
EditText Ehour = (EditText) findViewById(R.id.hour);
EditText Eminute = (EditText) findViewById(R.id.minute);
CharSequence CharHour = Ehour.getText();
CharSequence CharMinute = Eminute.getText();
int hour = Integer.parseInt(CharHour.toString());
int minute = Integer.parseInt(CharMinute.toString());
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(System.currentTimeMillis());
// calendar.add(Calendar.MINUTE, 1);
cal.add(Calendar.SECOND, 10);
mAlarmSender = PendingIntent.getBroadcast(aClockActivity.this,
0, new Intent(aClockActivity.this, Alarm_Broadcast.class), 0);
// Schedule the alarm!
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP,
cal.getTimeInMillis(), mAlarmSender);
// Tell the user about what we did.
Toast.makeText(aClockActivity.this, "The Alarm is Set",
Toast.LENGTH_LONG).show();
}
};
private OnClickListener mStopAlarmListener = new OnClickListener() {
public void onClick(View v) {
// And cancel the alarm.
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.cancel(mAlarmSender);
// Tell the user about what we did.
Toast.makeText(aClockActivity.this, "Setting off the alarm",
Toast.LENGTH_LONG).show();
}
};
Second Class Alarm_Broadcast
public class Alarm_Broadcast extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Alarm worked", Toast.LENGTH_LONG).show();
}
}
Note: Just ignore the Edittext part in the OnClick() method, I'd use it later on.
Apart from the above problem there are few questions that I would like to ask.
1) How can I implement this app so that when the alarm is set, it can actually run as a service in the notification bar where the original AlarmClock runs. So that even if the app is closed its still running to invoke the alarm message at the right time.
2) I cannot show any Dialog box or can use TTS if the AlarmManager invokes a Class that extends either Service or BroadcastReciever.
3) I would appreciate if some one give me the idea to implement this app, I am sure there are many experts who would have gone through the same application.
Regards
Omayr
Here is some sample code i used in an alarm clock app hope it helps.
To set the alarm:
private void setAlarm(){
Context context = getApplicationContext();
AlarmManager mgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(context, OnAlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
myCal = Calendar.getInstance();
myCal.setTimeInMillis(TIME_THE_ALARM_SHOULD_GO_OFF_AS_A_LONG);
mgr.set(AlarmManager.RTC_WAKEUP, myCal.getTimeInMillis(), pi);
Log.i(myTag, "alarm set for " + myCal.getTime().toLocaleString());
Toast.makeText(getApplicationContext(),"Alarm set for " + myCal.getTime().toLocaleString(), Toast.LENGTH_LONG).show();
}
This goes in the onAlarmReceiver class:
public void onReceive(Context context, Intent intent) {
Intent i = new Intent(context, AlarmActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
this will start AlarmActivity whenever it needs to go off. In your case you'd put the toast and speech into the AlarmActivity.
How can I implement this app so that when the alarm is set, it can actually run as a service in the notification bar where the original AlarmClock runs. So that even if the app is closed its still running to invoke the alarm message at the right time.
Do not do this. Having a service stick around in memory 24x7 to watch a clock is a waste of RAM and will get you attacked by task killers, reducing your app's effectiveness. Please stick with AlarmManager.
I cannot show any Dialog box or can use TTS if the AlarmManager invokes a Class that extends either Service or BroadcastReciever.
Start an activity, perhaps a dialog-themed activity.
Just got the answer, whatever service, receiver, activity and etc you are using, you need to register it in your AndroidManifest.xml. Or else it wont work