I have an application using Chrome custom tabs to open some links, I need to have event each second during all the time the user stay on Chrome, or know how many time he stay on Chrome. For me the only way to do it is to use a Service. Is it possible to do it differently?
Create your YourBroadCastReceiver class as follows
public class YourBroadCastReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Log.i("Called every 60 seconds","called");
}
}
After starting your custom tab successfully create Alarm PendingIntent that will trigger YourBroadCastReceiver once every 60 sec.
// Retrieve a PendingIntent that will perform a broadcast
Intent repeatingIntent = new Intent(context,
YourBroadCastReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
context, _pendingIntentId, alarmIntent, 0);
AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
// Set the alarm to start at 10:00 AM
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
manager.setRepeating(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), 60 * 1000, // repeat for every 60 seconds
pendingIntent);
after closing your custom tab never forget to cancel your PendingIntent
PendingIntent.getBroadcast(
context, _pendingIntentId, alarmIntent, 0).cancel();
For implementation of chrome custom tabs I've followed this tutorial, github link.
My solution basically rely on boolean and System.currentTimeMillis().
Step - 1 : Declare two class global variables,
private boolean isCustomTabsLaunched = false;
private long customTabsEnterTime;
Step - 2 : Set values for above to variables when launchUrl.
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d(TAG, "FloatingActionButton");
// Launch Chrome Custom Tabs on click
customTabsIntent.launchUrl(CustomTabsActivity.this, Uri.parse(URL));
isCustomTabsLaunched = true;
customTabsEnterTime = System.currentTimeMillis();
Log.d(TAG, "customTabsEnterTime = " + customTabsEnterTime);
}
});
Step - 3 : Calculate stay time in onResume method.
#Override
protected void onResume() {
super.onResume();
Log.d(TAG, "onResume");
if (isCustomTabsLaunched) {
isCustomTabsLaunched = false;
calculateStayTime();
}
}
private void calculateStayTime() {
long customTabsExitTime = System.currentTimeMillis();
Log.d(TAG, "customTabsExitTime = " + customTabsExitTime);
long stayTime = (customTabsExitTime - customTabsEnterTime) / 1000; //convert in seconds
Log.d(TAG, "stayTime = " + stayTime);
}
In order to make code more robust you may like to store boolean isCustomTabsLaunched and long customTabsEnterTime in preferences or database so in any case these two params get destroyed as your activity may get destroy in background if user stay for long time in chrome custom tab.
Related
I am trying to set an alarm to call a method in MainActivity. I have used the method described here; the alarm fires but once it does it repeats about once a second.
I am using setExactAndAllowWhileIdle since the alarm is needed only every hour or so (actually it doesn't need to be exact, I could use setAndAllowWhileIdle instead but that gives the same problem).
My Alarm class is pretty simple:
public class Alarm extends BroadcastReceiver
{
static MainActivity main = null;
public Alarm()
{
}
public Alarm(MainActivity ctx)
{
main = ctx;
}
#Override
public void onReceive(Context context, Intent intent)
{
if (main != null)
main.alarmAction();
}
}
In OnCreate() for MainActivity I have
alarmReceiver = new Alarm(this);
IntentFilter alarmFilter = new IntentFilter("Alarm");
registerReceiver(alarmReceiver,alarmFilter);
and then I have methods:
public void SetAlarm() {
alarmStarted = true;
Intent i = new Intent(this, Alarm.class);
i.setAction("Alarm");
PendingIntent pi = PendingIntent.getBroadcast(this, 1001, i, 0);
AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
am.cancel(pi); // tried this to solve the problem but probably not needed
am.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME, 1000 * 60 * 10, pi);
}
public void alarmAction() {
if (!alarmStarted)
return;
SetAlarm();
// will be more stuff here but this is minimum required to show problem
}
The flag alarmStarted is set from a button press.
Android Studio is giving me a memory-leak warning about the use of static in static MainActivity main = null, but without this main is always null in onReceive. I don't know if the repeating alarm issue is connected with this or not.
i'm trying to make the user choose the time of alarm but the alarm keeps triggering every 15 minutes "which is default" even if i choose another preference
this is the code related to the problem in my MainActivity
public class MainActivity extends AppCompatActivity {
private SharedPreferences sharedPreferences;
private static String reminder;
private static AlarmManager am;
private ImageButton btn;
private ImageButton cancel;
private EditText et;
private Intent intent;
private PendingIntent pend;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// initialize variables
btn = (ImageButton) findViewById(R.id.imageButton2);
cancel = (ImageButton) findViewById(R.id.imageButton);
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
// create intents
intent = new Intent(getApplicationContext(), Notifications.class);
pend = getBroadcast(getApplicationContext(), 100, intent, PendingIntent.FLAG_UPDATE_CURRENT);
am = (AlarmManager) getSystemService(ALARM_SERVICE);
// get the user preference
String sel = sp.getString("repeatPref", "1");
final String repeat[] = getResources().getStringArray(R.array.settings_repeat_by_labels);
final int ss = Integer.parseInt(sel);
// action when user presses the "Tweak" button
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
pend.cancel();
am.cancel(pend);
// initialize pend and AlarmManager
pend = getBroadcast(getApplicationContext(), 100, intent, PendingIntent.FLAG_UPDATE_CURRENT);
am = (AlarmManager) getSystemService(ALARM_SERVICE);
// if the user didn't type anything
Calendar calendar = Calendar.getInstance();
// notify at different times
if (repeat[ss - 1].equals("15 MINUTES")) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis() + 60*1000 ,60*1000, pend);
}
} else if (repeat[ss - 1].equals("1 HOUR")) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
am.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis() + 120 * 1000, 120 * 1000, pend);
}
} else if (repeat[ss - 1].equals("2 HOURS")) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
am.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis() + AlarmManager.INTERVAL_HOUR * 2, AlarmManager.INTERVAL_HOUR * 2, pend);
}
});
another button to cancel the alarm
cancel.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
am.cancel(pend);
pend.cancel();
Toast.makeText(MainActivity.this,"All cleared", Toast.LENGTH_LONG).show();
}
});
i'm creating the pend and Alarm In the onCreate method and second time when the "btn" is pressed because i'm creating another button to cancel it and i tried "for long time" to check if the PendingIntent "pend" and AlarmManager "am" already exist or no and then depending on the result canceling it but i failed so i thought this approach might work
Now everytime the user wants to cancel alarm and open the app it will create new pending intent and Alarm manager so if the user presses the cancel button without pressing "btn" first The app don't crash and the alarm which was already working gets canceled..i suspect this is part of the problem i'm having now
i know it's alot of stuff but i tried explaining as simple as possible..thanks for taking time to read all of that!
My app wasn't responding to my changes because I was retrieving the shared preferences before I click "btn". It got fixed after I moved the shared preference part to the onClick method.
I have a button it should work according to time from 09.00 Am to 04.00 pm and rest of time it should not work.
I am developing an app. I am new in android. I have three buttons namely register, events, gallery.
When I click register button it should work according to time mentioned above.
if the user click register on that time it should pass on to the next activity and rest of times the button click action should not work.
check for class AlarmManager
on app start create AlarmManage class service with
time gap current to desable/enable time in milisecond.
public class MyReceiver extends BroadcastReceiver {
private static final int PERIOD = 1200000;//20*60*1000; 20 minutes
#Override
public void onReceive(Context ctxt, Intent i) {
scheduleAlarms(ctxt);
}
public static void scheduleAlarms(Context ctxt) {
AlarmManager mgr =
(AlarmManager) ctxt.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(ctxt, AuthenticateService.class);
PendingIntent pi = PendingIntent.getService(ctxt, 0, i, 0);
mgr.setRepeating(AlarmManager.ELAPSED_REALTIME,
SystemClock.elapsedRealtime() + PERIOD, PERIOD, pi);
}
I have an application object declared in the manifest and this code runs when the application runs. What I want to accomplish is to set an alarm:
#Override
public void onCreate() {
super.onCreate();
singleton = this;
persister = new Persister();
am = (AlarmManager) getSystemService(ALARM_SERVICE);
sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
sharedPref.registerOnSharedPreferenceChangeListener(this);
registerAlarms();
}
public void registerAlarms() {
String sleepString = sharedPref.getString("time_sleepLog", "08:00");
String[] pieces = sleepString.split(":");
int sleepHour = Integer.parseInt(pieces[0]);
int sleepMinute = Integer.parseInt(pieces[1]);
String eveningString = sharedPref.getString("time_eveningLog", "20:00");
pieces = null;
pieces = eveningString.split(":");
int eveningHour = Integer.parseInt(pieces[0]);
Log.v(TAG, "eveningHour in registerAlarms: " + eveningHour);
int eveningMinute = Integer.parseInt(pieces[1]);
// create calendar objects pointing to the next time this clock will
// occur
Calendar sleepCal = Calendar.getInstance();
sleepCal.set(Calendar.HOUR_OF_DAY, sleepHour);
sleepCal.set(Calendar.MINUTE, sleepMinute);
sleepCal.set(Calendar.SECOND, 0);
Calendar eveningCal = Calendar.getInstance();
eveningCal.set(Calendar.HOUR_OF_DAY, eveningHour);
eveningCal.set(Calendar.MINUTE, eveningMinute);
sleepCal.set(Calendar.SECOND, 0);
Intent syncIntent = new Intent(this, SleepNotificationReceiver.class);
syncIntent.putExtra("MoodSleepLogAlarm", 0);
PendingIntent sleepPending = PendingIntent.getBroadcast(this, 0,
syncIntent, 0);
// then set the alarms
am.setRepeating(AlarmManager.RTC_WAKEUP, sleepCal.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, sleepPending);
Log.v(TAG, "Alarm for sleep registered at " + sleepCal.getTime());
}
I log in the broadcastreceiver to check if it runs with:
Log.v(TAG, "Context: " + context.getClass().getName())
I can see this in logcat 4 seconds after starting my application as 0
6-27 17:59:29.492: V/SleepNotificationReceiver(2609): Context: android.app.ReceiverRestrictedContext
When I call the registerAlarms() via a button it doesn't happend. So it is only when called onCreate.
Why does it run the broadcast receiver after 4 seconds? (It does also run the broadcastreceiver with the same context given at the given times in my settings screen - but I need it to not run when I set it.)
When you are setting the alarm repeating, the second parameter indicates when the alarm has to go off the first time, so I think that if you type sleepCal.getTimeInMillis() and you are in the "future" compared to this time, the alarm is going off instantly.
Check that second parameter if it's in the future because I think that you are not setting the day or month in your calendar.
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