Android - How To Run Code Depending On Simultaneous Hard Key Press
Mar 19, 2014
I am trying to implement a functionality when i press the VOLUME DOWN and POWER BUTTON simultaneously; i must be able to run a method code inside my Activity.
public boolean onKeyUp(int keyCode, KeyEvent event)
{
}
From my initial search; it seems that only one such key press event is acknowledged at a time in Android usng the onKeyUp method. Is it true?
In my Android phone, on simultaneously pressing POWER BUTTON as well as MENU BUTTON i am able to capture a screen shot.
Does this feature not acknowledge simultaneous key presses?
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Dec 14, 2009
I was wondering whether Androd can catch simultaneous Key Press. For example, a application does something when a user press HOME and MENU key simultaneously. Is it a possible scenario?
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Nov 24, 2010
In Android I get the version of the SDK easily (Build.VERSION.SDK) but I need to use LabeledIntent only if the platform is newer than 1.6 (>Build.VERSION_CODES.DONUT) I suppose that Reflection is necessary (I have read this link but it is not clear for a class or to me). This is the code but it gives me an exception because in my Android 1.6, the compiler verifies if the package exists even if the condition is not applied:
Intent theIntent=....;
if(Integer.parseInt(Build.VERSION.SDK) > Build.VERSION_CODES.DONUT)
{
try{
Intent intentChooser = Intent.createChooser(intent,"Choose between these programs");
Parcelable[] parcelable = new Parcelable[1];
parcelable[0] = new android.content.pm.LabeledIntent(theIntent, "", "Texto plano", 0);
intentChooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, parcelable);
activity.startActivity(intentChooser);
}
catch(Exception e)
{
activity.startActivity(theIntent);
}
} else
{
activity.startActivity(intentMedicamento);
}
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Nov 3, 2010
A backlight used to turn on for the bottom hard press keys on my dx but ever since I downloaded and installed the live wallpaper panoplied, they don't turn on anymore. I don't know how or even why a live wallpaper would turn off backlight settings for the keys but its becoming a major inconvenience. I checked the settings but couldn't find where to tweak backlight settings. I also rebooted the phone and did a soft reset but that didn't work. Can anyone out there help a brother out?
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Jul 20, 2010
I'm not sure what's wrong here, all i want to do is randomly grab an item from my array. Which is just like a random sentence. Then generate another once the button is pressed. All my code looks good to me but it's causing a crash when i hit the button. any ideas?
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Aug 3, 2010
If I want to dynamically display graphics or text in layout, can I still use xml or I have to hard code?
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Sep 29, 2011
if there's a hard code to create internet chats and also one can post wall / status and the others who has this application can view it? A simple chat will do that can link all the users together to conference.
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Aug 19, 2010
I've got a map of about 500 entries. Strings are all very short (less than 5 chars).Its read-only data I want to read once at app-startup. What's the best way to store this so that loading this data is fast?I've tried storing the data in a CSV in res/raw but this takes about 700ms to parse on my N1, so I'm hoping there's a faster way.
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Jan 5, 2010
I have, for the time being, a custom view with a 9-patch image as a border.
That custom view is placed three times in a LinearLayout, so it looks like this:
+------------------------+
| CustomView |
+------------------------+
| CustomView |
+------------------------+
| CustomView |
+------------------------+
I have attached a click event listener to the View, so it is clickable. But then I click it, I cant see that I am clicking it - there is no change in color.
So, Im thought that I'd attach a "onPress" listener, and then change the background of the view but I couldnt find such a listener.
So, the question is - how do I create the behaviour on the View so I can see that it is being pressed? this is normally done in Android with a green background to indicate that it is now being pressed.
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Sep 10, 2010
Implementing a service to handle connection changes and downloads. The service handles a queue of AsyncTasks, each representing a "download task". This way, we can cancel/pause tasks when connection drops, and also restore them when connection is reestablished. Since the threads AsyncTasks are run are not deterministic, how many ATs should I execute() at the same time?
I've read that I shouldn't reuse tasks. How can I achieve this pause->resume functionality then? Should I tell the thread to sleep? Should I make a no-op while if connection is down? I was trusting the cancel(true) method, which I've read is not reliable either.
My main DownloadTask is a subclass of AsyncTask that returns a new AsyncTask to be called when the connection is restored.
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Jan 28, 2009
I am working on an art project with several other people that involves simultaneity and photography. We want to coordinate a series of events involving simultaneous photographs based on the Android system.
In simple terms, here is what we are proposing. Someone writes an app for Android Phone/Camera that makes the camera take a photograph at a predetermined time so that many thousands of people all take a simultaneous photograph. The art involved here is not only the synchronizing of the event to approximate simultaneity but also making "social networking" into an element of an art project.
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Jan 13, 2010
Is there a limit on the number of simultaneous http requests of the form:
HttpResponse response = client.execute(request);
I'm interested in any official limit as well as practical ones.
(In a previous life, you had to dig deep to discover that WinMo only allowed three WebRequests to be open at a time.)
Let's say I have a list of 20 files to download on a background thread.
Should I: Download them one at a time, blocking the thread (but not the UI thread) to wait for each one? Start 20 threads each downloading one of the files?
I expect the answer may be somewhere in between, where I create C threads and work on the queue of N files, where C is a number like 3 or 4.
I suspect some of you here have already done some experimentation and know the magic number. In addition, I suspect there may be more efficient ways of doing what I'm doing than creating a new DefaultHttpClient for each request.
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Apr 16, 2010
With reference to this discussion, does this mean that simultaneous Record and Playback with Mediarecorder and Mediaplayer is not possible at this point?
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Sep 1, 2009
Trying to the do as the title describes with the following code, but it doesn't seem to work. It just does nothing once i have altered the keyCode. Do i have to do something to the event?
..............
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Aug 7, 2010
I need an app that changes my wallpaper depending on a specified schedule, like say one for the afternoon and one for night. Anything in the market like that?
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Aug 31, 2010
I'm having hard times parsing multiple different XML files on Android using the built-in SAX parser.
Nate and Aron Saunders have helped me with the right approach to this problem but I struggle in implementing it. You can read about it here.
http://stackoverflow.com/questions/3583876/how-to-parse-different-xml-files-using-sax-on-android
I have ten different XML files. code...
And so on. Every root tag is different. Now I know that I could branch the parser to trigger a different event on every root tag but I'm not quite sure I know how exactly do achieve this.
How would I tell my SAX handler that he should parse for AnotherInnerTag with its attributes based on the root tag?
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Jan 28, 2010
I am performing several https posts and http downloads from two different servers using AsyncTasks. The connections are fairly quick but I'm surprised to see that they are running synchronously instead of in parallel.
To be more explicit, here is pseudo-code for what's happening when I initiate a call to AsyncTask1():
CODE:..............
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Oct 27, 2010
I'm trying to read from a file while it still opened for witing.
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Aug 22, 2010
I am looking for an app, that say when I go to bed at 2300, it auto silences. It goes back to loud at 0600. When I get to work at 0800, it silences again. Yet, when my GF calls, I want it to always override and ring no matter what time it is.Are there any programs like this that will work for what I want?
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Oct 13, 2009
My job takes me to the courthouse several times a week. If you forget to silence your ringer and the phone rings, the judge takes the phone and you have to travel back to the courthouse at the end of the day to recover it. The judge also gets really really mad and gives lots of grief. So I need a failsafe way to automatically turn off the ringer while in the courthouse. I read this thread Set profile by GPS location about a program named Locale, but it indicated that if the phone loses the GPS signal, Locale will automatically revert the phone to the default profile or some other profile. I come from a Symbian phone where the phone would "learn" every cell tower ID in a given area and then set the phone's profile upon getting a signal from one of those towers. The profile would stick, regardless of losing the signal, unless and until it got a signal from a different tower which was not on the list it had "learned" from the location area. That is failsafe. Is there anything for an Android based phone which will silence the ring on a failsafe basis?
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Oct 10, 2010
I just installed the latest DialerOne (1.2.7.1) from the Market and find that the new simultaneous search of the call log and contacts is annoying in that it places call log entries at the top of the list, and tapping on them brings up the call history for that contact instead of listing their numbers so you can choose one to dial. I don't see any way to turn this off.Am I missing something?It would seem natural to have the ability to limit the search to the screen presented (search only the call log when the call log is displayed, or search only the contacts when contacts are displayed), but I have Dialer One display the call log by default, so that I can quickly call a recently called contact, or just start dialing to search, so this wouldn't work for me either.I would much rather go back to the way it used to be. Of course, I figured I didn't need to backup the previous version because after all, what could change? Now I have this, and the coloring of the digits on the keypad is weird, even after adjusting it as much as possible.
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Oct 14, 2010
I have an android app, where in a list view for each element in list, I load an image from web in a separate thread. So if there are 8 items displayed in list view, activity will try to fire 8 different threads, one for each list item to load an image. As you scroll down the list, the number of threads may increase if the previous threads haven't finished executing.
I am curious to know how many simultaneous threads can a single android app execute in parallel? Is there a limit? I wouldn't expect these threads to cause a ANR over slow internet connection as they are independent? But it seems that ANR does happen and may be it's because app/device run low on resources, so spawning a new activity in UI takes more than 5 seconds which results in an ANR?
Any clues to how I can make responsiveness better on a slow internet connection will be appreciated.
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Mar 4, 2010
I am developing one application with map view. I need display the weather depends on user place how can I get the weather report depending on the user lat and lon.
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Jan 18, 2012
I am working on a game for android at the moment, and was wondering how i would change the screen depending on orientation.
So if the user turned the phone horizontally then the app would be viewed horizontally if you know what i mean
Also how would i make a timer, so if a button were pressed, how would i say stop for 2 seconds and then go to link?
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Nov 2, 2010
I have a ListActivity and a MapActivity. I would like to launch either one of these activities on application startup that has been chosen by the user in a preferences window.
So far the only way I see to launch an activity on application startup is to specify it in the application manifest file using...code...
I am thinking I might have to start an activity that does nothing but looks at the user preferences and then launches either the ListActivity or MapActivity. Seems like a waste to have an activity do nothing but launch another activity. In my research I have not found any solution to this problem.
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Oct 14, 2010
Depending upon the user i may need to move it to right ,left,top or bottom.
Should i use animation for the purpose?
Or is there any method to move image dynamically?
I meant the things in android application
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Nov 11, 2010
I am developing game.i am displaying gun object center bottom of the screen.when user tap on screen i need to rotate gun that direction.i done rotating image.but when user tap on screen i need to rotate image that direction.
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Nov 25, 2010
If you don't need 3G on to do voice calls, then why would having it on not allow you to use your data connection while on a voice call?
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Aug 4, 2010
I just saw a video of a Verizon guy that got FROYO already. They were showing the changes included in 2.2 and it had the option to update all the apps at the same time or something similar. I thought that was art of 2.2.
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Mar 29, 2010
I probably don't need it persay...But! I want it! Just to have the peace of mind that phone calls won't interupt stuff. There have been times that I could both at the same time. Anyone think it might be implementef later? This is a real dream killer for me.
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