[android-developers] modify active intentfilter
Let's say that I have a BroadcastReceiver that has already been registered, and I want to change its IntentFilter at that moment (add a new data authority for example). Is this at all possible? Or do I have to unregister it first, and then re-register it with the updated IntentFilter? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] detecting shake movement without draining the battery
I would like to detect shake movement in a service that is running in the background, even when the phone is not currently being used. Is it true that the only way to do this is to hold a wake lock? I suppose this would consume a lot of energy and drain the battery very fast. Is there no way to wake up the phone whenever a shake movement occurs? Maybe with the native sdk? I would imagine the accelerometer causing some kind of interrupt. Any ideas? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] running emulator on a remote machine
Is there any way to connect the debugger to an emulator running on a remote machine? It's using TCP so I suppose it shouldn't be too difficult, but I can't figure out how. I would like to run the emulator on my (fast) laptop and do my coding on my (slow, but with bigger screen) desktop machine. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: running emulator on a remote machine
I'm sorry, I don't understand. I would like the emulator running on the laptop to show up in the list of devices in DDMS on my desktop, and receive its logcat output, etc. How could I use NFS for that? On 9 sep, 01:01, Roman ( T-Mobile USA) roman.baumgaert...@t- mobile.com wrote: If your systems support NFS then start the emulator remotely over NFS. -- Roman Baumgaertner Sr. SW Engineer-OSDC ·T· · ·Mobile· stick together The views, opinions and statements in this email are those of the author solely in their individual capacity, and do not necessarily represent those of T-Mobile USA, Inc. On Sep 8, 2:38 pm, Bart van Wissen bartvanwis...@gmail.com wrote: Is there any way to connect the debugger to an emulator running on a remote machine? It's using TCP so I suppose it shouldn't be too difficult, but I can't figure out how. I would like to run the emulator on my (fast) laptop and do my coding on my (slow, but with bigger screen) desktop machine. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: how to make sound hz?
On 1 sep, 10:01, guruk ilovesi...@gmail.com wrote: thanks for all comments. does anyone have a simple source demo. I could try that buffer[i] = (short) ( Math.sin((2. * Math.PI * i * f) / samplerate) * Short.MAX_VALUE ) ... and what afterwards, how to play it? I am just wondering ( please i am a total newbie in sound) when I fill always a buffer like above... how long is that sound?? That depends on how many samples you write. The AudioTrack object plays samples at a certain rate, for example 22050 Hz. To create a 1 second tone, you would thus have to write 22050 samples. I am not familiar with android's AudioTrack interface, but I'm sure the reference manual will help you there. I suppose when you call play () it will start playing as soon as you write enough data to it with write(). So you can generate the tone while it's playing. It's not a completely trivial subject as you have to get into how digital audio actually works, so if you're completely new to that you might want to try to find some kind of library to help you out. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Constructor problem
The problem is that renvoi_liste_recette_xml() throws an Exception (you shouldn't do this - either make it more specific or catch the exception within the method) and the initialization section of your Activity cannot handle this, because the constructor of Activity doesn't throw Exception. Move the initialization of your member variables to (a try/catch block within) the onCreate callback. On 31 aug, 15:07, sweet junkybr...@gmail.com wrote: Eclipse say that for the line: ArrayList listeRecette = renvoi_liste_recette_xml(); --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: how to make sound hz?
You will have to create the wave data yourself using a sine-function. Fill a buffer of shorts (for 16 bit audio) with something like this: buffer[i] = (short) (Math.sin(((double) i / samplerate) * f) * Short.MAX_VALUE); (please correct me if I'm wrong) If you need a 5 seconds tone, I suppose you could just fill a buffer of size 5 * samplerate, but you could also try something smart with a loop and repeatedly feed the same buffer to the AudioTrack object. Just be aware of rounding errors and aliasing. On 31 aug, 20:28, Eduardo Aquiles dudu...@gmail.com wrote: You could use AudioTrack. But you will need to create the data to send to it. On Aug 31, 2:19 pm, guruk ilovesi...@gmail.com wrote: sorry i just dont find that simple thing. how to create a tone lets say 10khz / 5 secs something like that,, just play a individual created sound, not playing a mpg or so? any example will be helpful thx chri --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: how to make sound hz?
I'm sorry, the formula is wrong. I think it's buffer[i] = (short) ( Math.sin((2. * Math.PI * i * f) / samplerate) * Short.MAX_VALUE ) But I'm not sure. I guess 3 AM is not the time to think about this. Anyway it should give you an idea of how to do it. On 1 sep, 02:23, Bart van Wissen bartvanwis...@gmail.com wrote: You will have to create the wave data yourself using a sine-function. Fill a buffer of shorts (for 16 bit audio) with something like this: buffer[i] = (short) (Math.sin(((double) i / samplerate) * f) * Short.MAX_VALUE); (please correct me if I'm wrong) If you need a 5 seconds tone, I suppose you could just fill a buffer of size 5 * samplerate, but you could also try something smart with a loop and repeatedly feed the same buffer to the AudioTrack object. Just be aware of rounding errors and aliasing. On 31 aug, 20:28, Eduardo Aquiles dudu...@gmail.com wrote: You could use AudioTrack. But you will need to create the data to send to it. On Aug 31, 2:19 pm, guruk ilovesi...@gmail.com wrote: sorry i just dont find that simple thing. how to create a tone lets say 10khz / 5 secs something like that,, just play a individual created sound, not playing a mpg or so? any example will be helpful thx chri --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Parcel/unparcel Bundle classloader bug?
I have a parcelable class whose writeToParcel() method puts some data
in a Bundle and writes it to the parcel.
This parcel gets sent from a client process to a service process.
At the side of the service, the readFromparcel() method tries to read
this Bundle from the parcel. A strange thing happens here.
First of all, I got a ClassNotFoundException for one of the objects
inside the Bundle. I fixed this by using readBundle(this.getClass
().getClassloader()) to force it to use the application's
classloader.
After this, I no longer got the ClassNotFoundException, but I did get
a different bundle, containing only the following entry:
mParcelledData.dataSize=376
This is not what's supposed to be in the bundle.
In the sourcecode Parcel.java I see this, in the readBundle
(Classloader) method:
final Bundle bundle = new Bundle(this, length);
if (loader != null) {
bundle.setClassLoader(loader);
}
So the classloader is set after reading the bundle, instead of before.
Shouldn't that be the other way around?
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[android-developers] Re: Parcel/unparcel Bundle classloader bug?
I noticed that the mParcelledData thing was the result of Bundle.toString() when the Bundle hasn't been unparcelled yet, so I decided to stick in a bundle.containsKey(something) before I printed the toString to force it to unparcel first, but then I got a NullPointerException. And I did check if bundle was not null. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] referencing projects in eclipse
I'm working on two projects. One is essentially a library, and the other is an application using that library. Now from the application project, I want to use the library's classes, so I added that project to the required projects under java build path. It seems to compile fine, but at runtime, I get this error: 07-27 11:26:57.037: ERROR/dalvikvm(741): Could not find class 'interdroid.contextframework.ContextManager', referenced from method com.bartvanwissen.contextframeworktest.MainActivity.onCreate Apparently, the library project's classes are not added to the apk file. How can I make sure they are included? Is this at all possible? Since I'm working on both projects at the same time, I would like to prevent having to create a jar file every time I want to test something. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] sending / receiving custom broadcast intent
I'm building a service that sends a broadcast intent when some value
changes.
The service sends the broadcast like this:
Intent broadcastIntent = new Intent();
broadcastIntent.setAction(nl.vu.contextframework.NEWREADING);
broadcastIntent.setData(Uri.parse(context://+cer.getKey()));
broadcastIntent.putExtra(reading,cer);
broadcastIntent.addCategory(nl.vu.contextframework.CONTEXT);
sendBroadcast(broadcastIntent);
In some Activity (in a different process), I'm tryint to receive this
broadcast as follows:
IntentFilter intentFilter = new IntentFilter();
intentFilter.addDataScheme(context);
intentFilter.addCategory(CATEGORY_CONTEXT);
registerReceiver(new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
Log.d(TAG,Received intent +intent);
}
}, intentFilter);
The intent is never received though. What am I doing wrong? Does my
intentfilter not match the intent?
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[android-developers] Re: sending / receiving custom broadcast intent
On 25 jul, 14:00, Mark Murphy mmur...@commonsware.com wrote:
Could it be that I'm using a non-existent scheme?
I invented context:// myself, maybe this is not a good idea?
In theory that should work, though I haven't tried it myself.
I take an Occam's Razor approach to intents and filters: they should be as
simple as possible, but no simpler.
In your case, unless you are creating a content provider, I don't know the
value of your inventing schemes and using setData(). Just put the values
you need in the extras and filter on your action.
I'm using the data because it allows me to receive only updates to
specific keys by including them in the IntentFilter. Many of these
intents may be fired and different applications may want to filter
most of them out.
Anyway, just to see if it helps, I tried not using the data and
putting everything in the extras:
Intent broadcastIntent = new Intent();
broadcastIntent.setAction(nl.vu.contextframework.NEWREADING);
broadcastIntent.putExtra(reading,cer);
broadcastIntent.putExtra(key, cer.getKey());
broadcastIntent.addCategory(nl.vu.contextframework.CONTEXT);
sendBroadcast(broadcastIntent);
and in the activity:
IntentFilter intentFilter = new IntentFilter();
intentFilter.addCategory(CATEGORY_CONTEXT);
registerReceiver(new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
Log.d(TAG,Received intent +intent);
}
}, intentFilter);
But I'm still not receiving anything.
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[android-developers] Location updates not coming through
I'm writing a program that uses a LocationListener to listen for location updates. I'm playing a GPX file that I recorded, which contains a route. I know for sure that this file is correct. My program seems to only receive 1 location update, and then nothing. I have both minimum time and distance set to 0. I thought it may be a bug in my own program, so I decided to test the same GPX file with google maps. In google maps, I don't see 'my location' moving. However, when I switch to the home screen and back, my location is updated. It seems that the last known location is fetched correctly, but realtime updates are not coming through. Is this a known problem? I'm working on a Windows Vista 32 bit system with Android SDK 1.5 r3 My number format settings are set to English. (I know this is required to send mock locations from DDMS). --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Tree of parcelables: Class not found when unmarshalling
So should I submit this as a bug? On 20 jul, 13:07, Bart van Wissen bartvanwis...@gmail.com wrote: I'm using a tree structure in my application, which has to be passed to a service. All nodes in the tree are of the type ExpressionTree, which is an interface. All nodes are also Parcelable. Now in my setup I have these types (all implement ExpressionTree and Parcelable): - ExpressionTreeRoot, a class with a reference to an ExpressionTree. - AndTree, a class with two ExpressionTree references. - StringCondition, a leafnode in the tree Now I'm passing a tree with an ExpressionTreeRoot referencing an AndTree referencing two StringConditions to a service, running in another process. ExpressionTreeRoot - AndTree - 2 StringConditions The parcel that is sent to the service is thus a flattened version of this tree, containing 3 parcels. When unmarshalling, the service process throws a ClassNotFoundException: 07-20 10:44:16.431: ERROR/Parcel(1355): Class not found when unmarshalling: nl.vu.contextframework.conditions.AndTree, e: java.lang.ClassNotFoundException: nl.vu.contextframework.conditions.AndTree I can see in my log output that ExpressionTreeRoot.readFromParcel() is called, which in its turn calls parcel.readFromParcel to read the included parcel, which is in this case a parceled AndTree. This is where the ClassNotFoundException is thrown. The parcel seems to be reading the class type correctly from the parcel, otherwise it wouldn't be printing the name nl.vu.contextframework.conditions.AndTree. But somehow it is unable to find this class, even though I'm sure it exists. Can anyone tell me what's going on, or give me some tips on how to investigate further? I'm using the default classloader by the way. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Tree of parcelables: Class not found when unmarshalling
On 21 jul, 11:13, Dianne Hackborn hack...@android.com wrote: There isn't enough information here to know if it is a bug in the platform... off-hand, I would guess not, since most of the logic in marshalling/unmarshalling such things needs to be written by the developer and doesn't come from the platform. Plus there isn't a Parcel.readFromParcel() method so it is even harder to tell... if this is actually Parcel.readParcelable(), you need to make sure you are using the class loader for -your- app, which is the one that knows about your class loader. The system class loader only knows about the core framework classes. Thank you. Yes, I meant readParcelable(), sorry about that. I guess I need to pass the right classloader then. I thought that 'default' meant the classloader for my app. That all side, a possibly larger question is... do you need to do this at all? If the service is not explicitly running in its own process but just in the normal same process as the rest of the app, there is no reason to use aidl at all. If it has been set up to run in another process, is there really a good reason to do this instead of just using the much simpler (and usually more efficient) approach of running locally? It's necessary, because it is a service that communicates with a number of applications simultaneously. Also note that passing this tree is not something that needs to be done a lot of times, usually just once for an application, so it's not really an issue if it's an expensive operation. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Tree of parcelables: Class not found when unmarshalling
Alright, I fixed it by changing tree = parcel.readParcelable(null); into tree = parcel.readParcelable(getClass().getClassLoader()); Thanks again. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: extending parcelables
On Jul 16, 6:52 pm, Dianne Hackborn hack...@android.com wrote: Just use ArrayListParcelable as your data type. Putting ListParcelable in my aidl file resulted in the following errors: The method writeBinderList(ListIBinder) in the type Parcel is not applicable for the arguments (ListParcelable) for this line in the automatically generated Proxy: _data.writeBinderList(conditionList); Type mismatch: cannot convert from ArrayListIBinder to ListParcelable for this line: _arg0 = data.createBinderArrayList(); in the onTransact method of the Stub Apparently the AIDL compiler thinks a ListParcelable is a ListIBinder? I ended up just making it a List with no type at all, and verifying the type in the service implementation. This works for me. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: extending parcelables
2. Use a generic Parcelable class type, in which case the marshalling code will inspect the class type, included that in the marshalled data, and use that to re-construct it on the other side. I don't understand this. My program deals with Condition objects, which can be put in a list to specify a series of search conditions. There are specific classes like StringCondition, TimeCondition, LocationCondition, etc. They are all subclasses of Condition, but they all have their specific sets of fields. A list of those has to be passed to a service. Now how would I use a generic Parcelable class for this? To be honest I don't have much experience with generic classes. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: extending parcelables
On Jul 15, 5:21 pm, Streets Of Boston flyingdutc...@gmail.com wrote: It looks like your Animal class is abstract and should never be constructed. Declare Animal 'abstract' and see if you get an instantiation error. It should be abstract, but I cannot make it abstract because then I cannot add the CREATOR to it, which is needed to implement Parcelable. So now it is just an empty superclass. Have your tried to put the 'public static final Parcelable.Creator CREATORCat' and 'public static final Parcelable.Creator CREATORDog' variables and definitions in both Cat and Dog (and not in Animal)? This will make sure that the factory-method createFromParcel creates the appropriate subclass (Cat or Dog, and not Animal). I did that, but it doesn't work. Those CREATORs are never actually called. The AIDL compiler sees the ListAnimal and assumes that every element in the list is an Animal, and no subclass of it, and it creates the unmarshalling code accordingly. About the readFromParcel(). If Cat and Dog both implement readFromParcel() it should work fine. Are you sure that the variable 'a' is not an Animal instance? That was my mistake, I didn't properly override the method (one was private and the other was public). I deleted my post when I noticed this. Unfortunately this was while you were typing your reply. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Documentation inconsistency in Service.onBind() intent extras availability
Is the MyPool object actually passed by reference here, from the
service to the client?
So changes to the object are reflected at the service side and at any
clients that may share the same reference?
On 2 jul, 11:15, Dianne Hackborn hack...@android.com wrote:
No, have a method on the top-level interface that returns another
object/interface based on whatever parameters you give it:
interface MyPool {
void doSomething();
}
interface MyService {
MyPool getPool(int sel1, String sel2);
}
If needed you can have a release() method on MyPool for the client to
indicate when they are done with it.
On Wed, Jul 1, 2009 at 11:45 PM, Gert gsch...@gmail.com wrote:
That would mean prefixing all the methods with their dynamic
identifiers to select the correct serivice object, such as:
void myPoolMethod(poolId, real parameters)
void myCollabMethod(poolId, collabId, real parameters);
and then looking up the specific instance with a global lock in some
form of registry. The poolId and collabId need to be unique over
(undesired) service destruction, which means lookups of strings in
hashtables...
getOrCreatePool(poolid).getOrCreate(collabId).myMethod(...);
Do you know how expensive is it to keep another connection object
around (well, setting it up most likely) versus 1-2 hashtable lookups
in every RPC call?
I chose this design since the expectation is 0-1 bindings to a single
pool and, depending on the activity, one-few bindings to one of those
collaboration objects per activity. You could compare the basic
structure to the more traditional content (provider) based apps that
work with a list of items (pool), and specific item (collab
thing). Not all activities will need a binding to the pool, or more
then one collab object.
Also, if you bind to a binder linked to a specific pool/collabobject,
you can do easy refcounting allowing for dynamic destruction of the
server object trees, else I think you'll have to force the client app
to not only unbind the service, but also remove their references. This
might not be an real point though, just more bookkeeping.
On Jul 2, 1:11 am, Dianne Hackborn hack...@android.com wrote:
You may want to seriously consider just having a single service and
Binder
interface, with calls on to that top-level binder interface to get the
secondary interface(s) the client wants. In general I find this cleaner
than setting things up where there are an unbounded number of Intent
objects
you can bind to (keep in mind that the activity manager needs to set up
and
hold a new kind of connection object for each of these), or ending up
with
multiple service components.
Once you have a binder interface, you have a mechanism for very rich
interaction between the service and client through whatever API you want
to
describe in aidl.
On Wed, Jul 1, 2009 at 3:56 PM, Gert gsch...@gmail.com wrote:
For completeness, I ended up going this:
My service is maintaining (dynamic) pools of (dynamic) collaberation
objects, so I ended up with 2 services:
MyPoolService, bound with:
action=package.IMyPoolSerivice
data=package:poolname
and MyCollaberationService, bound with:
action=package.IMyCollaberationService
data=package:poolname#id
This way I return a binder per pool, and a binder per pool-
collaberation pair, and I can keep (and dynamically create) the state,
in the binders. Perhaps using the data Uri to select a specific
(binder) instance isn't the way this is intended, but it does map well
to this service operates on that data.
Regards,
Gert Scholten
On Jul 1, 11:57 pm, Dianne Hackborn hack...@android.com wrote:
Good point, you can make up whatever action string you want (provided
it
has
your appropriate namespace); it is a convenient convention for this
to be
the fully qualified name of the interface that is being requested.
On Wed, Jul 1, 2009 at 1:42 PM, Bart van Wissen
bartvanwis...@gmail.com
wrote:
I think you can actually use the Intent's action to select the
implementation stub that you need. In the examples, the class name
is
used, but I think you can use anything you want, as long as you
create
the appropriate intent filter for the service.
On 1 jul, 20:33, Gert gsch...@gmail.com wrote:
I have a service working with selectable backends internally, and
the
user is able to select which on to bind to. I was hoping to
optimize
a
bit by have that selection made by the bindService call, and just
keep
a single Binder per backend implementation. Guess I'll just
create a
new Binder per bindService, and point it to the backend to use.
Anyway, thanks for the information - following the the
documentation
it is :)
Regards,
Gert Scholten
On Jul 1, 6:24 pm, Dianne
[android-developers] Re: Documentation inconsistency in Service.onBind() intent extras availability
I think you can actually use the Intent's action to select the implementation stub that you need. In the examples, the class name is used, but I think you can use anything you want, as long as you create the appropriate intent filter for the service. On 1 jul, 20:33, Gert gsch...@gmail.com wrote: I have a service working with selectable backends internally, and the user is able to select which on to bind to. I was hoping to optimize a bit by have that selection made by the bindService call, and just keep a single Binder per backend implementation. Guess I'll just create a new Binder per bindService, and point it to the backend to use. Anyway, thanks for the information - following the the documentation it is :) Regards, Gert Scholten On Jul 1, 6:24 pm, Dianne Hackborn hack...@android.com wrote: Yeah that is a little wrong... the extras are very complicated, because the bind is cached in various places. So you will see the extras for -some- request to bind, but not necessarily the current one. I would strongly strongly strongly urge against using extras here. There really is no need at all -- you will be getting back a full IPC interface to the object, through which you can do whatever interaction and data passing you want. The Intent in this API is intended -only- to identify which interface you are interested in. (I think I had intended the code to strip out the extras because of how undefined it is about what you will get, but apparently had forgotten to do that.) On Tue, Jun 30, 2009 at 11:25 AM, Gert gsch...@gmail.com wrote: Hi, I have a question about the availability of the extras in an intent passed to Service.onBind(). The documentation at http://developer.android.com/reference/android/app/Service.html#onBin...)http://developer.android.com/reference/android/app/Service.html#onBin... specifically states Note that any extras that were included with the Intent at that point will not be seen here.. However, extras are available (emulator, SDK 1.5). Is the documentation off/outdated and are the extras available intentionally, or are they unintentionally exposed to the onBind method? Can we rely on extras remaining available at this point? Regards, Gert -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Expression Evaluation library that works in Dalvik
I'm looking for a library that will let me evaluate expressions at runtime. Required: - basic logical expressions (AND, OR, NOT operators) - custom functions - some mechanism to resolve variables (I want to link some variables to some entities in a ContentProvider) I have tried a number of libraries including MVEL and Juel, which would be perfect but they do not seem to work under Dalvik. I couldn't really figure out why, but it looks like they rely on some class loading mechanism which seems to be problematic in Dalvik. There was also some problem with libraries checking the java runtime version (System.getProperty(java.version)) which is 0 in Dalvik for some unknown reason. I have also looked at BeanShell, but I think this is not really suitable because it is a full blown scripting engine (which leads to some security issues in this case) and all I need is evaluation of simple expressions. Any suggestions? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
