Android :: Discover Resources That Are Available In An Application?
Feb 1, 2010
How does one go about listing the resources that are available in an application?
For example, I would want to find the names of all files under /res/ xml.
Reflection on the R class didn't seem to work since the identifiers are static constants. R.xml.class.getDeclaredFields() doesn't return any fields.
The AssetManager didn't seem to work either because these are not raw assets.
Does anyone have ideas or examples?
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Feb 19, 2010
how I can find the memory used on my Android application, programmatically. I hope there is a way to do it. Plus I would like to understand how to get the free memory of the phone too.
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Feb 7, 2010
I am very new to android. The Eclipse and the Emulator is running and I have bought an device already. I want to write a little UPnP- Discover-Application first. I used CyberLinkForJava under Java some years ago. I read on this list (2010/1/29) that this framework can be used under android too. Like mentioned in the post from skonno I downloaded the code via svn from sourceforge and copied the trunk/cyberlink/upnp-stack/src/main/ java section into the source folder of my android project. Then I`d got errors in XercesParse.java and kXML2Parser.java. If I delete this classes it runs without errors. But the code from the cyberlink documentation. Code...
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Jan 28, 2009
I have created a subclass of Activity, 'CustomActivity', that overrides the onCreateOptionsMenu and onOptionsItemSelected methods. In a couple of other applications I have extended this subclass to provider a common menu for each activity. Is it still possible to access the resources from this Subclass? By default it uses the resources from the current activity (Strings, xml layout etc.).
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Aug 10, 2010
I have big files to integrate into my application (videos), and thus for not not that my application occupies all the internal memory of the telephones, I saw that it was possible with Froyo to install the applications on the SD card.
I thus have to test this solution and my application settles down well on the SD card, the only problem it is that the system installs all the same my files videos (which are placed in the file /raw) on the internal memory of the telephone. Thus my question it is where to place my videos or where to make so that these also settle down on the SD carde ?
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Jul 3, 2009
I created an application which is displaying camera preview. When the application terminates I noticed that some processes are still running. Also if I try to run the original camera application it displays an error (obviously due to the active process which belongs to the custom application).
Does anyone know how to release all resources when application ends?
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Sep 17, 2010
So I'm struggling a bit with what is probably a fairly basic concept.. Activity Lifecycle.I have read a bunch of thread on the topic, and I feel I understand well both the functionality, and rationale behind the lifecycle model implemented for Activities, but it raises a bit of a problem for me. My app (game) has a couple of distinct Activities for various sections:
1. The TitleActivity is a very small Activity that just launches a GLSurfaceView and renders a startup logo.I use this to detect the OpenGL capabilities of the device (eg so I know if it's using a software renderer)
2. The LaunchActivity is the main menu screen where the user can access options etc and start a game
3. The GameActivity will either launches a GLSurfaceView or a standard View depending on hardware capabilties.
The issue I am having is that I want to pre-load some "slow-to-load" resources, specifically audio, in the Title Activity so when the Launch Activity renders I can play some background music.I have the concept of a "media library" which I use throughout the game.Because of memory limitations in the SoundPool, I have limited this to only absolute real-time sounds and all others are played using mulitple instances of MediaPlayer.Hence my media library has a bunch of pre-loaded MediaPlayer instances which I access regularly during game play.. so it makes sense to have a centralized access point for all audio.All fine, however the problem is that when I launch one activity from another.. for example the TitleActivity starts the LaunchActivity (via a call to startActivity(Intent...)), the former goes through the onDestroy stage of its lifecycle.Now logically I had assumed that if I allocate a bunch of resources in the onCreate of an Activity, I should clean them up in the onDestroy, however in the case of my "media library" if I load up the audio files in the onCreate of my TitleActivity they will be torn down when the LaunchActivity is started because the TitleActivity will have its onDestroy() method called.
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Jul 1, 2009
I created an application which uses camera and during the appplication execution the screen is always on.
In the onCreate() method I added the lock code...
But after the application termination the screen remains on all the time and if I run the camera application it encounters an error which obviously appears because the camera resources are not released.
Does anyone know how to release all resources on application termination?
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Feb 24, 2010
The code I am trying to implement includes a service and an application. When the application is first launched, it starts the service using the
startService(svc_name) call. Here svc name is an intent pointing to the class that runs the service.
I want to share a resource(file/socket connection) between the service and the application. For example one writes to a file and another reads from it. I am unable to get proper sync between the service and app. Could you please let me know how this can be achieved?
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Mar 9, 2010
The Android documentation says that best practices are to make two drawable directories - one for HDPI and one for MDPI. It also says that if the MDPI directory doesn't exist and a MDPI device is running the app, it will scale down the HDPI ones so everything looks good. Is there any reason not to just make one high resolution set of graphics? One con that I can think of is performance issues and one pro I can think of is only having one set of images for your app.
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Jul 11, 2010
In my Android project, I want to loop through the entire collection of Drawable resources. Normally, you can only retrieve a specific resource via its ID using something like:
InputStream is = Resources.getSystem().openRawResource(resourceId)
However, I want to get all Drawable resources where I won't know their ID's beforehand. Is there a collection I can loop through or perhaps a way to get the list of resource ID's given the resources in my project?
Or, is there a way for me in Java to extract all property values from the R.drawable static class?
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Jan 26, 2009
Is there any way to discover which intents a given app supports? An old post indicated that PackageManager.GET_INTENT_FILTERS isn't supported, might there be some other way to do this?
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Mar 17, 2009
I am currently doing my Bachelor Project concerning Android Programming.
Therefore i need a possibility to SCAN/DISCOVER Hot-Spots or WLAN's where i can connect to.
In many topics i have read, that the EMULATOR does NOT support WiFi scan with WiFiManager. I also tried using ConnectivityManager or BroadcastReceiver. But it doesn't ever work.
So my question ist the following - is it CORRECT that the emulator does not support any kind of WLAN Scan/Discovery? I need as many comments on this as possible - because only if its REALLY true, that the emulator does not provide WIFI functioanlity, then i can ask for buying a Dev Phone.
And if so, WHY there is no WiFi support within the emulator...?
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Aug 17, 2013
I have never had trouble rooting/unlocking android phones until I got a Samsung Galaxy Discover SGH-730M. I can't figure out how to root it. Unlock root pro did not work, and neither does using the ADB (I get a mounting error).
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Jan 12, 2014
All of today my Samsung Galaxy Discover wouldn't turn on. Nothing. Black screen, no lights, no sounds, no vibrations - nothing. I left it all of today to see if it would get any better, but it didn't, so I took the battery out and put it back in. Now it keeps rebooting itself over and over again, and every time it boots to "Android System Recovery <3e>". I've tried a few of the options but nothing is working, it just keeps booting over and over again to that screen. How do I get it to boot to my actual phone, normally?
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Jul 24, 2013
My Pantech Discover(P9090) stopped ui System error, I need to reinstall the original ROM.
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Feb 21, 2014
I have a Samsung Galaxy Discover. I want to be able to put my game apps, music, and photos on my SD card. I also want to have the game apps, music, and photos on my laptop without having to move the SD card around. I have changed the storage location when I take pictures to the SD card. I want to be able to put pictures I receive in text messages on there as well. I have tried manage apps, I have tried connecting my device through USB to my laptop and manually copying the files to the SD card. Are these goals possible? How can I accomplish them?
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Apr 2, 2014
I have a Rooted Pantech Discover P9090 with ClockworkMod 6.0.2.8 recovery from Here. After which I proceeded to test out the phones "secure" (encryption) features. Now that the phone is encrypted, however, I cannot remove the encryption because I can not perform a factory reset. When attempting a factory reset from within the UI the phones attempts to reset as normal but at the point where the phone turns off and comes back with the android screen and a loading bar at the bottom the phone restarts. Doing a factory reset from the recovery fails do to not being able to load /data, /system /sdcard. Is there anything else I can try/do?
Other info:
Android Version 4.0.4
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Jan 31, 2009
I am trying to discover the frequency of recored audio. I am kinda new to multimedia programming (I am very new to android). Is there a way to get raw frequency information from the Mic?
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Mar 31, 2009
I currently have a few classes that are called by an activity (some statically) in which I want to use a string resource. I tried: Resources.getSystem().getString(R.string.mystring), but am getting an error. It seems as though you can only use this within an activity.
Is there anyway to use a project resource in a standard (non Activity) class without having to pass the resource object from the activity calling the class?
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Oct 18, 2010
I have an app with 2 Activities and an IntentService all which need to access the same SQLite Database table. What's an appropriate pattern to use?
Should I create a ContentProvider that manages access to the database, ie opening/closing, querying, updating etc. And have the 3 clients all access the DB via the ContentProvider?
Or is it OK for each client to access the DB directly? This is the approach I have now and it seems to be working, but I need to close my cursor and the DB after executing every statement or I start generating stacktraces in the log about unclosed DB resources. But closing the DB after each statement seems wasteful and I suspect that this approach will always be susceptible to the stacktraces because there is always the potential for collisions between either of the Activities and the IntentService.
I haven't been able to find any good resources that show DB usage in full. It always snippets that miss out the *obvious* piece such as when should the resources be closed etc.
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Feb 13, 2009
Anyone was able to play a video included in the .apk? I'm able to play this video from the SD card but not when it's a resource.
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Apr 20, 2010
I'm thinking at putting a .txt file in res/drawable or in res/layout to have it in the apk when the application is packed, and then after install to open and read from it to perform some tasks . Can this be done ? If yes please let me know how can I access the file ,as I don't know it's path .
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Sep 10, 2010
I'd like to use the RandomAccessFile class to access a file that ships with my application. However, that class only accepts a String which is the path to the file. If I place my file somewhere like the assets directory, how do I construct a path to that file? I know I can use the getAssets methods to read up resources, but those only return InputStreams which cannot be seeked.
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Nov 8, 2010
I'm developing an Android app for which we will be selling separate content in the Android Market. Since Android lacks an in-app purchasing model as iOS has, I have come to understand that this is the ideal way of selling additional content (but NOT functionality) for Android apps.
So the question is, how do I actually load raw resources from other Android apps, assuming that I know the exact name of the resource, app ID, etc.?
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Nov 22, 2010
Is it possible to share resources across APK's? For example, can application A (in APK A) load an icon or layout view from application B (in APK B)?
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Aug 24, 2009
The question boils down to whether phone manufacturers are required to keep resources that are available in SDK intact. Say, will android.R.drawable.ic_menu_preferences be the same file on any phone?
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May 18, 2010
In J2ME, I've do this like that:
getClass().getResourceAsStream("/raw_resources.dat");
But in android, I always get null on this, why?
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May 7, 2010
For example code...
How can I get the resource by its name?
Without using R.raw.yuri = (int)
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Feb 21, 2010
Need some advice from you experts out there. I've just started with Android programming and while I finally got what I want my "Hello World" to do, I feel as if I'm bludgening my way through rather than grasping concepts. I created three EditText boxes. Below those I created three Spinners. Pick a number in the Spinner and it will show up in the corresponding EditText box. Spinner 1 correlates to EditText 1, Spinner 2 to EditText 2 and Spinner 3 to EditText 3. I had a hell of a time getting this to work. I do have some cleaning up to do. Is there a better way to pass or reference resources around various classes?
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