Android :: OnKeyDown In A Service?
Aug 11, 2010
What I'm basically trying to achieve is custom global hot keys or in other words 'things will happen when I push certain buttons no matter which program is currently on top'.I assume a service is needed.I have a quick and dirty test that just tells me what has been pressed that will work if it is the active window.But obviously if I change window or go into a text box it doesn't work. If I stick it directly into a service (or an imputmethodservice) and launch said service nothing happens. (Some permissions required maybe?)Any suggestions where I'm going wrong?Or a better way of capturing which button is pressed?
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Oct 20, 2009
I've created a simple android game, based on the Lunar Lander sample, and I'm having a problem with handling key events.When the activity starts, the only keys that onKeyDown or onKeyUp get called for are the dpad up/down/left/right keys.Neither the menu, back, or dpad_center keys trigger onKey methods. However, once I've pushed one of the dpad up/down/left/right buttons, pressing the menu, back, or dpad_center keys do trigger these methods. I'm not getting any errors, or any indication of what's going wrong.It's possible that the focus is set wrong - the activity is started from a button on screen, so it could be in touchscreen mode. If that's the case, shouldn't touching the back button get me in to the right focus mode so that I can catch the event?I'm using the emulator from SDK-1.5r3.I have not been able to try this on a real phone yet.
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Aug 24, 2009
I' d like to fire up onKeyDown() event from my source code (for example from Activity). I want it, because i'd like to create program for remote keyboard, which will be PC keyboard. PC will send to mobile throw Socket message and mobile will fire up event from message in socket. Message will contain pressed key on PC keyboard. In future i'd like to create service, which will be starting on device power on .
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Mar 28, 2010
is it possible to use onKeyDown() for an ImageButton instead of onClick() to capture the user's click on this imagebutton?
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Jun 20, 2010
I am trying to override the behavior of a TabActivity that has other Activities as children. I have made all of the children activities return false in onKeyDown so that the key will propagate through to the parent.However, this is not the case.The only key that is being recognized is the search key.Back, menu, and home are not being overridden.
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May 26, 2009
I have a proble with onKeyDown: my activity consists in a simple textView (as header) and a ListView below it, I need to go back to the previous screen when the user presses the back button.Thus, I implemented the onKeyDown method. Everything works fine if the list contains some elements, but when the list is empty the onKeyDown method is never called.
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Sep 2, 2009
In the ListView, the space key is available as an onKeyUp event but not as an onKeyDown event.Is it possible to override the ListView's default response (i.e., page down) to the space key?The reason I ask is that my application's ListView scrolls to the text (including space characters) the user enters.Although I can implement my application's ListView scrolling based upon characters from onKeyUp(),that results in unwanted list jumping anytime the user types a space.
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Dec 10, 2009
I have an activity which overrides the onKeyDown method. The documentation states the following about onKeyDown: "Called when a key was pressed down and not handled by any of the views inside of the activity." The problem I have is that this method is being called even when the views inside the activity handle it. I have a button implementing a longPress listener. What I see on debugger when long clicking on the button with the center key is that first onKeyDown from the activity is called then the longPress listener from the button gets triggered. Even for Textviews, when long clicking on it with the center select, the activity onKeyDown gets triggered before the TextView processes the longclick (and shows the Input Method context menu).
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Sep 15, 2009
I am wondering if there is a way to override the onkeydown for an edittext view without making your own class? I just want my user to type something in and hit enter, i put up the flag so enter doesn't actually do anything now, but I want it to launch a function ive made.
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Jun 24, 2009
I have a service running in the background.I have a background thread that gets a reference to the service from the application's main activity. But when the background thread calls a method in the service to display a toast, I get the "Looper not initialized exception".Why,if I have a valid, bound reference to a Service, does this still happen?
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Aug 20, 2009
I am getting following message when i try to launch service.Also is there any specific path on file system where we need to place the .apk file which contains my serivce component only.
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Jul 22, 2010
I am trying to run the sample soft keyboard included in the SDK. I am using the debugger, and the literature says that to use a breakpoint while debugging a SERVICE, I need to include:
android.os.Debug.waitForDebugger();
So here is the portion of the code I modified:
CODE:...........
I have put a couple of breakpoints, at the statements indicated by the comments.
This is what happens: the debugger first stops at the breakpoint1, for a few seconds. But then the service restarts. For the life of me I can't figure out what makes the service to restart.
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Mar 1, 2009
My service works exactly the way i want as long as i use start and stop and communicate using intents. However my activity needs to change the state of my service as well as retrieving state information.So i thought it would be nice to broadcast some kind of state_changed event from my service and use a binder interface to pull information from the service or change the services state based on user input.This works fine too. The only problem is that my service gets killed when i unbind it just as the documentation says.Is there any way to keep the service alive but still get an interface to control it directly. My activity offers the user a way to stop the service and the service kills itself anyway after it's work is done but i don't want the service to stop every time the activity is destroyed.
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Nov 9, 2010
I'm confused about whether I need to run my service in a separate process. What are the advantages / disadvantages of each?For reference I'm trying to create an App that uses a service to play [streaming] audio in the background. So which one is better for my use case?
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Nov 20, 2010
what I'm trying to do here is implement something like a peer-to-peer client. Being that, it will start a client thread and a server thread.I know Services themselves run in the main GUI thread, so I'll have to start a couple of independent threads (or Asynctasks?) for each server and client. The only thing I'm not so sure about is if I'll better have 1 Service starting 2 threads, or maybe 2 services, each one of them starting their own thread.
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Nov 30, 2009
I got an problem on getting the TelephonyManager in my personal service. The code as below: public class MyService extends Service {@Override public IBinder onBind(Intent intent) { return mBinder;}
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Sep 30, 2009
i have an app that binds to a local service.I want to add a desktop widget that binds to the same service. does my service have to be a remote service or can it still be local?if it can still be local, how can I get at the local binder?
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Sep 30, 2010
Please show me how to bind to a Service from another Service on Android.
If you have an image to show how to do.
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Jul 16, 2010
I am developing an Android app which needs to poll a specific webpage in time intervals. I've got it to the point where it does indeed poll the page on a specific interval, and that interval is specified in a SharedPreference which can be changed by the user in the settings page of the app. But complications arise when network connectivity is flaky.For example, how do I ensure that the Service "wakes up" the network adapter and gives it ample time to connect before polling the page, in the case that the phone was sleeping to save power? This polling action can happen as little as once every 24 hours, so I don't want to miss one action just because the network was out (but turned on a few seconds, minutes, or even hours later).
Or there are times when the web service doesn't respond, or DNS doesn't respond, or what have you, and for any reason it doesn't get a response even though the phone is technically connected. What sort of rule do I put in place to make this retry later, so that I'm not retrying repeatedly when the user specifically turned off their internet but I'm retrying soon enough that if it was just a hiccup, the data can be received soon after the first try?Are there any examples for this type of situation? What is the logic to best handle this?
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May 28, 2010
I'm developing a GPS tracking software on android. I need IPC to control the service from different activities. So I decide to develop a remote service with AIDL.This wasn't a big problem but now it's always running into the methods of the interface and not into those of my service class. Maybe someone could help me?If i now try to call a method from an activity for example start(trackId) nothing happens. The binding is OK. When debugging it always runs into the startTracking() in the generated ITrackingServiceRemote.java file and not into my TrackingService class. Where is the problem? I can't find anything wrong.
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Feb 17, 2010
i have a question about Services in Android.I have a application with two Services A and B.Is it possible that Service A can stop Service B?I dont want to do it through a Activity, cause the Application will be in Background. If some special Event happen in Service A, then it should tell Service B to stop. How can i do that?
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Jan 10, 2014
I have a galaxy s2 and after I installed costom roms I dont have any signal what so ever.
I tried with like 3 roms and the same result.
I tought it was a modem problem and I tried to install some modems and see if that works. But it didnt.
My Service State says Out of service and sometimes it says Radio off.
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Jun 3, 2010
I hosted my service WCF (.net) using a windows service,i can access to the service from any browser but when i tried to call it from android it doesn't respond. it works fine before the hosting procedure (i used host client by default on Visual Studio).The url that i try to attempt is from android emulator, and installed my webservice in the same local machine(endpoints address http://localhost.).
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Jun 13, 2009
I am creating a application whose only component is a service which keeps on running in background (basically a proxy server) but I am not able to find a way how to start that service. Application can not have any UI or user interaction so I am not using Activity.Broadcast receiver can listen to BOOT broadcast but how do I start service first time when it is installed and how can I keep it running?or is there a broadcast which I can listen after app is installed e.g. may be TIME_TICK but that has to be registered from activity i think.
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Jun 11, 2010
I would like to know the best practices for running a Service every day at 4AM.The way I think I should be doing it is to create a new repeating alarm using AlarmManager and having it run the service at 4AM. Problem is, I'm not sure where to put the code to set the alarm.Do I do it in my main activity as one of the first tasks in the OnCreate method? Do I do some funky stuff with BroadcastReceivers and intents? What happens when a user updates my app? What happens when a user restarts?Any help with these questions would be much appreciated.Sample code would be helpful as well!
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Apr 24, 2010
What is, and when would it be good to use "IPC"?
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Jun 15, 2010
I have an activity that contains a button in it,and once this button is clicked I start service ,but each time i press the button no service is started and this message appear in the LogCat Unable to start service intent {Package name}: Not found
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Jul 15, 2010
Why should I use startActivity() in a Service? If I need an Activity a have to call an activity and if I need a "delayed activity" I have to use the notification. So, why should I use startActivity()?
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Aug 31, 2010
Service Component is used to do some task which can be done without user interaction. But for that we have to run a thread in subclass of the Service. I think we can create a thread in Activity class itself then what is the use of Service component? Why don't we create another thread and write the non interacting code in this thread.
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Jan 18, 2010
I am new to Java and Android.I would like to retrieve remote data and display it within my activity. To prevent tying up to UI, I understand that I can do this in another thread. (I thought I could just-as-well fetch this remote data from within a service, but that appears to tie up the UI thread also). So now I'm beginning to think I need to either run the logic from a new thread within a service, or run a service within a new thread. But which? I have found many examples online of running new threads or services, but I have yet to find an example of both at the same time.
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