Android :: Practice For Obtaining Compass Reading?
Aug 18, 2010Now that SENSOR_ORIENTATION is deprecated, what's the best practice for obtaining compass reading? The old way was so simple.
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Android :: Obtaining Exact SDK Source
Sep 2, 2009I was hoping someone could give me instructions to obtain the *exact *source code for the current SDK. What I have so far is as discussed here; http://androidforums.com/android-developers/1045-source-code-android- By using commands such as; repo init -u git://android . git . kernel .org/platform/manifest.git -b android-sdk-1.5_r3 jar cvf ../android-src.jar -C core/java . etc. my issue is that the source is still inconsistent, some extra methods are available and some are not. For example, I want to make a progress bar with two sliders (To select a range) but the version of Progress bar I have; http:// android .git.kernel.org/?=platform/frameworks /base.git;a=blob ;.http://android .git.kernel .org/?p=platform/ frameworks /base.git;a=blob;> I cannot mimic (as an initial implementation), despite using the same package and extending View I do not have access to 'mMinWidth' for example. In addition the progress bar uses methods of the class StateList Drawable which are not available in this SDK (e.g. getStateSet(int i)). It's obvious that there's an inconsistency between the source I have and that which was compiled into the android SDK but I don't know why given my GIT repo commands. Can someone link to the version of ProgressBar which was shipped with android-sdk-1.5_r3? Has anyone managed to get the branch which maps directly to this release? This might well be due my inexperience with Git, please let me know if anyone has this set up correctly and I will try again. I seem, in all honesty, to have the head revision still.
View 6 Replies View RelatedAndroid :: Obtaining Name Of Object Reference
Nov 3, 2010Object getThisObjName= new Object();
I'd like to get the name of an object reference.
Is this possible via reflection in Android?
Android :: Obtaining SurfaceView Dimensions
Jul 6, 2010I'm trying to develop a little game, with 2D Graphics. I want my "gaming board" to be at a specific position on my screen, so that I can display in-game informations above and below the box. But since there is beginning to be a lot of Android phones out there, I was thinking about getting "dynamic" values so that I can adapt my font size to every device.
My game is not in full screen (but it could be, it's no big deal), but in a window with no title bar.
I'm using an extension of the default SurfaceView class, implementing SurfaceHolder.Callback. I tried writing the following method :
CODE:................
But the values returned are zeroes.
(even if it means changing display strategy) ?
Android :: Obtaining Video Frames For Processing
Dec 31, 2009I am trying to decode and obtain all frames in a video stream, each of which would be processed by a native signal processing engine and re-encoded back to a MPEG4/MP4 file. I noticed that there was a getFrameAt() function in earlier versions of SDK but its not available in v 1.6 on which I am working. As I am fairly new to Android, I would like to know from more experienced people around here as to how I can extract video frames into a buffer for processing.
View 2 Replies View RelatedAndroid :: Obtaining The Selected Index Of A Spinner
Mar 26, 2010I want to obtain the index of the selected item in a spinner.
I am aware of the method getSelectedItem() which returns the item selected (which might be a String). But i want the index of the selected item.
Something equivalent to the setSelection(index) to set the selected item.
Of course I can get the selected item and compare it against the array of items to obtain the index, but I hope there is a better way of doing this.
Android :: Obtaining/calculating Process CPU Usage
May 4, 2009How can I get/calculate current process CPU usage? ActivityManager provides method that returns a list of all active processes (list of RunningAppProcessInfo), but that class doesn't provide any CPU usage information.
View 10 Replies View RelatedAndroid :: Obtaining Application Usage Data
May 18, 2009Is there any way to programmatically retrieve data that reports on application usage as shown in the Spare Parts application? I know what calls need to be made, but it seems that they all use internal APIs...is this true?
View 2 Replies View RelatedAndroid :: Obtaining Field Of View Of Camera
May 14, 2009Is there a method of obtaining the field of view for a phones camera (horizontal and vertical)?
View 2 Replies View RelatedAndroid :: Obtaining A Private Key Through The Keytool For App Release
Nov 24, 2010I can't find a tutorial online that gives me the step by step process on how to generate a suitable key using the keytool in the JDK.
This: http://developer.android.com/guide/publishing/app-signing.html
Talks about it and gives commands, but it doesn't actually say where and in what folder to key in the commands. I am sure I am missing something easy here, but could anyone guide me to where I need to start with this?
Android :: Obtaining Data From Sensors Without Listeners
May 24, 2010I have following code:
CODE:...........
Code is working but here goes my problem: when I call it from main activity in this way:
CODE:........
Then i can see 10 times result of 'doing sth else!!!' and when loop is over i can see then result from activity. So sensor activity waits for some reason and then when main activity has nothing to do, sensors are doing their job.
of course I have well implemented: onActivityResult(int requestCode, int resultCode, Intent intent)
I want to read sensord data directly, not using listeners, is it possible?
General :: Android - Obtaining IP Address (WiFi)
Jul 10, 2012I had to factory reset my router and now when i try to connect my phone to the wifi all i get is "Obtaining IP address".
View 9 Replies View RelatedAndroid :: Best Practice For Changing Min SDK Version?
Aug 2, 2010I have a sizable install base already on some apps with Android 1.5 set as the minimum version. I want to update the apps to take advantage of some of the newer features offered in Android 2.0 and greater. What is the best way forward so I don't break things for my current 1.5 and 1.6 users?
If I simply update the application with a new min SDK version, will 1.5 and 1.6 users be prompted to uninstall? Or will they just not see the update? What about future development that I want to apply for everyone, say a bugfix. Will I have painted myself into a corner? Another solution would be to fork and create a new app for 2.0 users, but that is undesirable for several reasons.
Android :: Uninstalling Apps Best Practice
Jun 23, 2010I have had my Desire no for almost 2 months, and like most I have tried installing and uninstalling many apps, to see what I like.Due to doing a factory reset on my phone yesterday I have layered back all the apps I was using and have noticed that I have used considerably less memory than before, making me very suspicious of the uninstall method used within the market place.Does it leave behind pieces of the app, and if so what's the cleanest method of uninstalling apps.
View 7 Replies View RelatedAndroid :: Best Practice For P2P Handset Networking
Dec 4, 2009I've been scouring the web looking for information on setting up a peer-to-peer connection between Android handsets and so far have drawn a blank. The only thing I can definitively seem to work out is that it was made a whole lot more difficult when XMPP was removed from 1.0. Apart from that, I find a couple of threads on an OpenIntents board about porting an XMPP implementation to Android that were last posted nearly 2 years ago. Has anybody solved this problem effectively? What's the best way of doing it (from a games point of view)?
View 7 Replies View RelatedAndroid :: Best Practice For Implementing Watchdog
Sep 17, 2009I'm writing an application where real-time knowledge of the GPS state is critical to convey to the user. I request GPS updates at 1000 ms intervals -- when I haven't received another update 1500 ms past the most recent update, I want to display a yellow icon, and 5000 ms after the most recent update I want to display a red icon. Currently, I'm doing it like this: private CountDownTimer gpstimeout; public void onLocationChanged(Location location) { if (gpstimeout != null) gpstimeout.cancel(); gpstimeout = new CountDownTimer(5000, 1500) { public void onTick(long m) { setYellow(); } public void onFinish() { setRed(); } }; gpstimeout.start(); }
View 3 Replies View RelatedAndroid :: Best Practice With SQLite And Phone
Mar 22, 2010What is considered "best practice" when executing queries on a SQLite db within an Android app? Is it safe to run inserts, deletes and select queries from an AsyncTask's doInBackground ? Or should I use the UI Thread? I suppose that db queries can be "heavy" and should not use the UI thread as it can lock up the app - resulting in an ANR. If I have several AsyncTasks, should they share a connection or should they open a connection each?
View 3 Replies View RelatedAndroid :: Best Practice To Pull Content From Web?
Sep 29, 2010I'm new to developing Android applications, and have only a little experience with Java in school. I was redirected to StackOverflow from the Google groups page when I was looking for the Android Beginners group. I have a question about what is best practice to pull content from a web source and parse it. Firstly, I would eventually like to have my application threaded (by use of Handler?), however, my issue now is that the class I have created (Server) to connect and fetch content often fails to retrieve the content, which causes my JSON parser class (JSONParser) to fail, and my View to display nothing. After navigating to the previous Activity, and attempting to call the connect(), fetch(), and parse() methods on the same remote URI, it will work. Why does this (sometimes retrieve the remote data) happen sometimes, but not always? What is the best practice, including the use of ProgressDialog and the internal Handler class, to make my application seemless to the user. Is this the best place to ask this question?
View 1 Replies View RelatedAndroid :: Best Practice - Passing Id To New Intent?
Sep 22, 2009I am creating a database driven app for managing people. I am showing a list of people with each name in a TextView. When a TextView is clicked, I launch a new intent to show the detail for the person. My question: What's the best practices for passing the id of the person to the new intent? The TextView is displaying the name of the person, so how do I know the id of the person? Once I know the id, I know how to pass it to the new intent, but I don't know what the best way to associate the id of the person to the TextView. Is there a best practice for this?
View 2 Replies View RelatedAndroid :: Best Practice For Specifying Pronunciation For TTS Engine?
Aug 16, 2010In general, I'm very impressed with Android's default text to speech engine (i.e., com.svox.pico). As expected, it mispronounces some words (as do I) and it therefore occasionally needs some pronunciation guidance. So I'm wondering about best practices for phonetically spelling out those words that the pico TTS engine mispronounces. For example, the correct pronunciation of the bird Chachalaca is CHAH-chah-LAH-kah. Here is what the TTS engine produces: mTts.speak("Chachalaca", TextToSpeech.QUEUE_ADD, null); // output: chuh-KAL-uh-KUH mTts.speak("CHAH-chah-LAH-kah", TextToSpeech.QUEUE_ADD, null); // output: CHAH-chah-EL-AY-AYCH-dash-kuh mTts.speak("CHAHchahLAHkah", TextToSpeech.QUEUE_ADD, null); // output: CHA-chah-LAH-ka mTts.speak("CHAH chah LOCKah", TextToSpeech.QUEUE_ADD, null); // output: CHAH-chah-LAH-kah Here are my questions. Is there a standard phonetic spelling recognized by the Android TTS engine? If not, are there some general rules for making custom pronunciation spellings that will make the spellings more likely to be correct in future TTS engines/versions? It appears that the Android TTS engine ignores text case. What is the best way to specify emphasis?
View 2 Replies View RelatedHTC EVO 4G :: Obtaining IP Adress For 4g Orlando
Jul 5, 2010When I try to connect to 4g it says there is a network available but stays stuck on the 'obtaining ip adress' screen. I am located in Orlando which is one of the upcoming cities for 4g. Does this mean that the antenna is there but not yet strong enough or what?
View 13 Replies View RelatedHTC EVO 4G :: 4G Connection - Obtaining IP Address?
Jun 4, 2010I am right outside Chicago and have yet to be able to connect to 4G. I seems like the Evo is starting to connect to 4G, but then just sits with the message of "Obtaining IP address from Sprint". I have left it in this state for 30 mins, and nothing happens. Does anyone know if this is a fault of the phone, or maybe a lack of coverage?
View 23 Replies View RelatedAndroid :: Best Practice For Storing Application - Configuration
Apr 8, 2010I am still learning bu find Android the cool platform for allot of useful applications. I have written a Service for doing GPS tracking and it consists of a Service and a Control activity to manage, monitor and configure the service. I am looking for the preferred way for the Control Activity to define settings for the Service, things like IP address and Update interval. I envision something like a Registry on windows where these settings can be shares and updated.
View 9 Replies View RelatedAndroid :: Best Practice For Responsive User Interfaces
Jun 16, 2009I am quite new to Android and Java. Before I was working with C++ where the events where dispatched with messages. Now I would like to create the same user experience for Android platform and I would appreciate any of your suggestions or comments on what is the best way to bind events to user controls.
Here is an example from C++:
ON_MESSAGE(WM_RECORD_START, &CMainFrame::OnRecordStart)//Method OnRecordStarts() executes on WM_RECORD_START_MESSAGE...................
Android :: Preferences Use Explanation - Recommended Best Practice?
Oct 6, 2010Some of my app's preferences could use some more explanation than the scarce space available for the summary. Sadly, there doesn't seem to be support from the system, like an optional help button that shows a longer text. How do you solve this problem? The first thing that comes to mind is an additional custom "preference" like "more information to above entry" that opens an AlertDialog with the help text, but that's not really nice for both user (two entries for the same preference) and the developer (manual work to do in Preference Activity). A bit nicer for the user, but way more work for the developer would be custom dialogs for each preference with more text and/or a help button. Is there a better solution or even an officially recommended best practice?
View 7 Replies View RelatedAndroid :: Building Two Versions Of Application - Best Practice?
Apr 19, 2009What is the best way to release two versions of an application? E.g. a free version with limited features, and a paid version with the full feature set. #ifdef would be the ideal way to do this, but Java doesn't support it. Could I do something like: try {import com.foo.myapplication.ExtraFeatures; } catch (Exception e) { // ignore it, this must be the free version}? I could manage with this kind of construct, although #ifdef really would be ideal.
View 10 Replies View RelatedAndroid :: Garbage Collector Conservation - Best Practice
Jul 29, 2009I didn't use much Java before Android so my knowledge concerning the gc is marginal. Now I'm developing a highly physics-based game and therefore I need to do many calculations each time step and many (25) time steps per second. At the moment I'm almost only using local objects (float) in my methods, so I guess they are allocated every time the method is called (which might be, for example, 25*100 = 2500 times a second , for 100 objects with calculations on them). This causes massive activity of the garbage collector like freeing ~10000 objects every 1-2 seconds (taking ~200ms on a real device). Now I really want to optimize that because even there's no noticeable delay due to the GC (and the frame rate is constant), this seems just not well. But I read on many documentations concerning Java optimization, that there is not much to optimize in modern versions of (desktop) Java, because the GC is fast enough. Does this apply to Android, too? Does the compiler optimize anything like frequently, steady allocated objects (like floats)? What would be best practice: keep all local objects and allocate and free them all the time or use class-global objects, even if they are only used inside one particular method (which is bad programming style but conserves GC?
View 5 Replies View RelatedAndroid :: OpenGL ES - Best Practice For Huge Maps?
Jan 13, 2010If I want to render just a huge map, what is the best practice when using OpenGL ES with a mobile device (Android or iPhone based)? What is the best structure to contain all the vertices, normales and texture coordinates? I guess using a interleaved structure may give you some performance benefits caused by memory caching. Ok? Should I use drawArrays or drawElements to push my data to OpenGL ES? Well, I did no testing at all but I might think, that drawElements might be faster if the GFX does not use shared memory since you do not have to push that much data. Since this is really close to metall, what do you think? (the iPhone is ARM based while the Android platform is Qualcomm based (also an ARM?)
View 2 Replies View RelatedAndroid :: Best Practice For Viewflipper Containing 10 Linear Layouts?
May 23, 2010I'm embarking on a GUI Activity composed of a viewflipper, which I would like to contain 10 linearlayout layouts. Is it advisable to put all of my layouts into the same XML resource/layout file? If not, is there a more organized approach to coding a viewflipper with many layouts? Will having everything in the same file come at a significant performance cost?
View 2 Replies View RelatedAndroid :: Best Practice - Testing Application Kill
Mar 9, 2010I'm having troubles with users that report that if they leave the application opened and after a few hours when they return to it the app crashes. I'm pretty sure it is because I'm not storing/restoring the status correctly when my process is killed by the system, but I would like to be able to test it in a repeatable way. Which is the best way to simulate the same behavior that happens when Android kills my process on low memory conditions?
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