Android : Way To Pass Resources
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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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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Jul 13, 2010
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?
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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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Jan 24, 2010
I have a long series of graphics -- icon1_0.png, icon1_1.png, icon1_2.png..., icon12_0.png, icon12_1.png, icon12_2.png -- and I'd like to package them with my android application. Ideally I think I should be able to load them as resources but the resource id's are set up as java identifiers. Of course, java identifiers can't be assembled at runtime. I have to ask for R.drawable.icon12_00 so I cannot set up a loop
for(int icon=0;icon<12;icon++)
for(int frame=0;frame<3;frame++)
//syntax error obviously
BitmapFactory.decodeResource(getResources(), R.drawable."icon" + icon + "_" + frame + ".png");
So is there any way to get resources by their names? Better yet, is there a canonical way outside the resource system to pack data files into an android application package so that I can get at them? I'm thinking about reflection but that doesn't seem like the right solution to me.
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Apr 27, 2010
I need to add a res/drawable-nodpi folder to my Eclipse ADT project. My project originally contained drawable, drawable-hdpi, drawable- ldpi, layout, etc subfolders, but no drawable-nodpi. How do I add this to the automatic resource build process? I tried to manually create the subfolder and copy files to it, but those resources are not being auto-generated. How do I make Eclipse utilize the new resources subfolder?
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Aug 23, 2009
I was able to play around with the resource on a different apk and get them using createPackageContext as you suggested.
Here is an example of the code:
CODE:............
This works well. now i am trying to get ALL the drawables (or all the layouts) in this package. i tried a multitude of ways including reflection and AssetManager but was unsuccessful. any tips here? just to be clear i can not use R.drawable.icon as this is a different context.
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Aug 20, 2010
I understand that the system may kill the activity without calling onDestroy(). Say I have a MediaPlayer that runs even when it's not visible, I would be releasing the player in onDestroy() method.Now, if the system decides to kill the activity after calling onPause() and never called onDestroy(), what does it mean for my MediaPlayer? Is it ever released? This is bigger problem for Camera since I think it requires to be released for other activities to use it.
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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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Jul 27, 2010
I'd like to access resources from other packages installed. Is there any better practice than using getResources() combined with createPackageContext()? Another question is how to use resources from other packages in methods like Notification(int icon, CharSequence tickerText, long when), where 1st argument is just resource id?
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Jul 28, 2009
I have different text packaged into my app for different locale. The Resource.getString(int resid) method automatically returns me the string for the CURRENT locale of the phone. Is there a way I can specifically obtain resources while passing in a locale? For example, there isn't such method as: Resource.getString(int resId, Locale myLocale);
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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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Mar 24, 2010
Is it possible to pack resources in a way that they get distributed with apk? I know it's impossible to use subfolders in res's directories (drawable, raw, etc)... so I was wondering if I can create folder (data) and somehow tell compiler to include all resources from that folder - and later access them with InputStream (without using R.)
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Nov 2, 2009
I'm an Android game developer and I need to ask you a couple of questions about Android heap limit.
Does the 16 MB heap limitation also applies to OpenGL ES textures or SoundPool sound effects? Since they are managed by native code, is it correct to affirm that there is no problem in using more than 16 MB of RAM in app/game resources/assets? If it is possible right now, it is guarantee to be possible in the future?
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Mar 23, 2010
We are investigating the possibilities to package & deploy platform UI extensions which can contain both Java code and resources - which then can be (re-)used by applications using <uses-library> tag in the AndroidManifest.xml. One solution which has been discussed was to use the aapt -x option together with the new --custom-package option introduced in November to generate unique resource identifiers for the shared resource package. Then, just as the <uses-library> information in the manifest file would bootstrap the class loader with the listed extension packages, it would add these packages to the asset manager as well - allowing the asset manager to locate and load the extension resources. (This would require a platform extension.)If this is a way forward - using the 8 package bits in the resource identifiers? This solution would probably work initially for one vendor since the allocation of unique package identifiers would be an internal issue, but if extension packages where to be exchanged within the android community there would be a high risk of packages using the same identifiers.
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Apr 9, 2010
Is there any "best practice" to deal with plural messages? code...
How could that be done?
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Aug 30, 2009
I have a timer application and I was hoping to add the default sound resources that are available on the device, a la android.R.drawable.*
Are these resources available in any default location? Or shall I just compile my own set of royalty-free sounds?
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Aug 11, 2010
I am trying to get list of all raw resources or assets packaged in my APK. This is required because i have written code and i am generating APK's after changing only resources. So, I want to know how many resources exists in my APK.
But i am not able to find any API from which I can get the list of resources which are packaged in my APK.
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Mar 19, 2010
I'm building a jar so that other developers can use the view I create in their Android applications. I'm wondering if it is possible to use a layout resource in my jar so I can build the layout of my view or if I need to build up my view programmatically. Similarly, can I include image resources in my jar file?
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Jun 8, 2010
I have two resources file in res/values directory: string.xml and names.xml
how can I retrieve all resources from names.xml only
the method
Field[] x=R.string.class.getFields();
retrieves resources from both files.
how can this be achieved?
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Jul 28, 2009
When I extract a XML file from res/layout in an APK file it is garbled up. How can I fix this?
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