I'm using a timer which needs context..
Now i have the following code ...
Is this safe to use , or may i be leaking the context here?
btw. this is in a broadcastreceiver.
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I'm not sure if this is an Android question or just due to my being new to Java as well. I'd like to use the getString method to get strings from my resources (R.string.whatever). I see that this is a method of the Context class, and I can call it directly from within my main Activity class. But I also have some utility classes in their own class files and can't simply call this method from them. What seems to be required is for me to pass the context (the Activity object) into these other classes via their constructors. Then I can call the method e.g., mCtx.getString(). I guess my main question is whether there's another way to get the Context without having to pass it from class to class as an argument.
View 9 Replies View RelatedI am curious about the safety of this method I have considered using for passing touch events in my Android application (and testing my understanding of concurrency in Java). Here's the basics:
I have a SurfaceView hooked up to SurfaceHolder.Callback to get user input events, mainly the onTouchEvent callback. After the onTouchEvent method is invoked, I see if event.getAction() == MotionEvent.ACTION_UP and, if so, call a method I have named postTouchEvent which is a member method of my app thread that updates the application's state and draws to the canvas. Code...
Now I understand that it is certainly not atomic, but since I treat it as immutable after receiving it from framework, won't this work? (Instead of synchronizing the post method and the if statement, which I have no problem doing, but I'm asking to learn.)
Here are my thoughts. I know I will have a valid reference to the object but I am unsure in what state I will actually see the object. While testing everything is working out just fine but I am aware of how uncommon threading exceptions can be, even if something is broken.
Also, I can see one problem with this: If another MotionEvent comes though, it's possible that inputEvent in the run() method will be set to a different event than the one that was referenced when this.mInputEvent != null was checked, but this really isn't an issue.
So, is there anything I am missing or, for my purposes, should this be ok?
I have this code fragment: Code...
View 3 Replies View RelatedIs is bad practice to pass the Context to a constructor and save it as a private variable for internal use? The other option is to pass the Context as a parameter to methods that need it.
Which is the better option?
I have a feeling that passing to the constructor might result in memory leaks accidentally.
I was just on there yesterday i go into browse tonight and now all of a sudden it says pass world invalid from last night till this morning i tried typing in the little letters they had and I cant read it so I go to the google site. I put the info in and it says sorry account has been terminated for terms and conditions I didnt even do any thing to violate them?
View 1 Replies View RelatedHow can I launch a contextmenu from a contextmenu? I'm trying to replicate the MediaPlayer action that happens when you long click a song, then click "Add to playlist" in the resulting contextmenu. When you click that menu item, another contextmenu pops up with "Add to playlist" as the title, and "Current playlist", "New", and however-many-playlists-you-have defined after that.
View 4 Replies View RelatedI am creating an App in which i need to add a timer for postpone the one event for 1 hr and start same event after 1 hr , so i want to know how i can implement the same. Are there any Timer api's and handling of them in android.
I came to know about Timer in android. I read http://android-developers.blogspot.com/2007/11/stitch-in-time.html that Timer is not available at Runtime.
View 2 Replies View RelatedI have a service that I need to execute every two minutes. Would it be more efficient to use an alarm or a timer?
View 3 Replies View RelatedWhat is the proper way to set a timer in android in order to kick off a task (a function that I create which does not change the UI)? Or there is a better way in android (android's handler)?
View 2 Replies View RelatedHow to get whether timer is running or not? That means How to get whether timer is scheduled or not?.
View 2 Replies View RelatedI'm looking for the best way to setup a timer for a game. For example I want the timer to tick down, but I want to be able to add to the timer when certain levels are reached etc. I'm just looking for the most efficient way to accomplish this. it only needs to be every second or so. If anyone has any insight on this.
View 4 Replies View RelatedI am new to Android development and have been working on a simple demo app that needs to update a TextView a few times from an array after a button is clicked. I have read and adapted the code found here to achieve this: http://developer.android.com /resources /articles /timed-ui-updates.html
View 2 Replies View RelatedI would like to know how to intercept the event that the apk has been updated in order to launch again my Timer. Indeed, I have a Timer wich is "scheduled AtFixedRate", but when my App is updated through the market, the timer is killed ; and if the user doesn't launch the App, the timer is not started (so my app becomes useless). How could I do to avoid it ? Is there an event to catch the "App updated" ? I searched, tried, but nothing.
View 4 Replies View RelatedI have to give a 20x20 presentation tomorrow and I'm looking for a timer app to help out. 20x20 means that each slide auto-advances after 20 seconds. I'd like to have a timer on my phone that would give me a quick glance of how much time I have left for each slide. Start it at 20 seconds, have it count down and when it hits zero, start over at 20. Seeing as it's just a timer app, I really would rather not pay $2 for StopWatch & Timer, which is the only one I've found that offers a looping timer. Does anyone have any ideas?
View 1 Replies View RelatedIn order to get XML data from a server repeatedly, I'm attempting to use AsyncTask and Timer as per Mark Murphy's suggestion. I get the following error:01-07 16:11:26.705: ERROR/AndroidRuntime(729): Caused by: java.lang.Runtime Exception: Can't create handler inside thread that has not called Looper.prepare()I'm using SDK 1.5 with Eclipse on Windows.I've looked in documentation, on StackOverflow and in the Android Developers group, but I'm not clear what's causing the error or how to fix it.I can get the data once - i.e. without Async and Timer - and parse it via SAX without problems.s: I'm quite new to Android.
View 5 Replies View RelatedWhen writing :
CODE:.......
Are we actually starting a new thread that handles ticks ? or what is really happening behind ?
Is there a timer within Android that can be set for a given interval and when the interval has elapsed to send a signal back to a listener routine inthe main programme? Something like the way a button reacts when clicked.
View 2 Replies View RelatedI am using a Timer in my android application, but i can't get it to work. When I start my application the Timer simply does not start. The application continues but does not update.The long "toStart" finds the number of seconds left of the current minute, and thereafter the period is set to 60 seconds. The TimerTask simply calls a method.
View 2 Replies View RelatedIs there an app that lets you set a countdown timer on another app which causes it to force close. For example, I use my Eris as my MP3 player and would like to listen to it while I go to sleep, however I don't wanna let it play all night while I'm sleeping maybe just an hour or so.*Edit* Nevermind I found an app that does the job. Its called Music Sleep. It lets you set a timer that will close your music app in case anyone else was interested. It only costs 99 cents
View 2 Replies View RelatedI am presently working on GPS. I have to start GPS periodically. I mean I want GPS to start after a particular interval, get Location value and then stop taking location updates. For this, I'm calling requestLocationUpdates( , , ) method in a timer. Then in onLocationChanged(), I stop taking location by using removeUpdates(). Then after particular interval, it again starts taking values, then when location changes, it stops, and so on.
Here is my code:
CODE:.............
Now the problem is:It starts fine for the first time,when location changes it stops then starts again,but the timer stops running after that.I dont get any error or exception.I dont know where is the problem.As far as I am concirned,the problem is in timer......
I have an activity that uses a Timer (java.util.Timer) to control the display. I set it off to repeat its run() method every second or so. When it runs, it updates some View elements.
As Timer runs in its own thread, I assumed this would be reliable. But I notice that sometimes there is a stutter, or delay, in the views updating. It's like they occasionally get stacked up, and all happen together. Studying the output from logcat, I notice that this happens when the device is doing something else - some system functions, or sometimes a garbage collection.
How can I avoid this? I'm not aware I can run the main activity in a thread of its own, can I? If the timer has its own thread, why is it affected?
I've created an app that functions as a countdown timer via a thread, a wakelock, and a handler back to my activity. My question is, what will cause my thread to die, or app to not be running in memory anymore? I've had this happen once, and can't seem to recreate it again.
View 14 Replies View RelatedInterval Training Timer is an invaluable tool for all interested in workout, run, cycling, sprint, tabata, weightlifting, hiit and many more. It allows you to set own training schedule with various number of rounds, ready time, round and rest times and relax time after workout. It is also possible to create dynamic training plans in which every round and rest time can be longer or shorter. Import and Export your training plans or share them with the world!
View 1 Replies View RelatedCould someone explain how to use the Timer.schedule - that is used for scheduling tasks - in Python? Note that Python's time.sleep will not work in Android.
View 1 Replies View RelatedI need to create a Timer to update the UI at regular intervals. But the Swing Timer class is not available on Android. (I would avoid creating threads and then use the Timer class from java.util package)
View 2 Replies View RelatedI'm using a class extends with view. I'm using timer in that class. I'm using onTouchEvent() also. I onTouchEvent() I'm using invalidate(). So it is calling onDraw(). When i use invalidate() in Timer. It is not calling onDraw().
View 8 Replies View RelatedI have a class that is essentially a message manager (a singleton) that has a timer that polls for status. (statusPollerTask is just a derived class of TimerTask that has the run() defined)
timer.scheduleAtFixedRate(this.statusPollerTask, 0, 1000);
Several Activities register themselves with the msg-man for updates (observer pattern style) as they become visible. Works fine, except if the user presses the Home button and minimizes the app. Sometimes the timer keeps polling other times it doesn't. I need to maintain the polling even when the app is not visible. I feel like I'm just missing something simple here.
i have an android app with several activities. I need to start a timer when the first activity starts and end the timer when the last activity starts and show the elapsed time. How can i use Asynctask to do this.
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