Hello, since I do not have 10 posts I can not post in development related forum.
Anyway, I would like to know how Bundle truly works... On Android 2.2 (HTC Desire) I managed to notice strange behaviour - sometimes a Parcelable object is put in and out of the Bundle without the call to Parcelable.writeToParcel(Parcel,int) nor Parcelable.CREATOR.createFromParcel(Parcel).
Also all the fields of class are recreated, even the ones I want to be forgotten - like reference to Context).
So I assume sometimes Bundle use Parcelable protocol and sometimes it simply uses Reflections or even protects a part of memory disallowing it to be collected be garbage collector (Bundle i C++ class wrapper so its highly possible).
My question is: how to handle this strange behaviour?
At this moment I'm doing things like that:
Code:
public class OuterClass
{
[INDENT]protected Context mContext;
protected InnerClass mNoContextData;
protected Parcelable getParcelable()
{
[INDENT]return mNoContextData;[/INDENT]
}
protected void setParcelable(Parcelable aParcelable)
{
[INDENT]mNoContextData = (InnerClass)aParcelable;[/INDENT]
}
public static class InnerClass implements Parcelable
{
[INDENT]//somedata
InnerClass()
{
[INDENT]//data init[/INDENT]
}
//parcelable implementation[/INDENT]
}[/INDENT]
}
I found another strange behavior - android can NOT find class object using above code (InnerClass) when trying to restore object from parcelable after longer time on hold. I get BadParcelable exception all the time ;/.
I just started developing for my new Sony tablet and was curious if I can send IR codes with my own app instead of using the Sony app. Here is what I've achieved so far. Maybe someone finds this information usefull and maybe we can provide further information based on this.
The service kinda works, the callbacks get called, I can read raw commands using learnKey() method and I can get the keys for specific devices using getKeyList() but sending IR pattern or key codes to devices seems not to be working quire right, although the callback gets status OK after sending.
Sony created a DataProvider to share data between the app and the service. Thanks to this fact I queried following URI content://com.sony.nfx.app.irremote.provider/learnt and found all custom learnt codes I added via the Sony app. But even using this exact data doesn't seem to do anything when sending to the device.
Access to IR service is restricted by permission and process so our AndroidManifest.xml should look like this:
Code:
<uses-permission android:name="com.sony.nfx.app.irremoteservice.permission.EXECUTE_SERVICE"/>
<application ... android:process=":remote">
...
</application>
Required AIDL files:
Code:
package com.sony.nfx.app.irremoteservice;
import com.sony.nfx.app.irremoteservice.IUEIControlServiceCallback;
interface IUEIControlService {
int sendKey(int i, int j, int k, byte byte0);
int sendSonyCode(int i, int j, byte byte0, int k, byte byte1);
int sendIRPattern(int i, int j, byte byte0, in byte[] pattern);
int sendStopIRSend(int i);
int getKeyList(int i, int j);
int learnKey(int i);
void registerCallback(IUEIControlServiceCallback callback);
void unregisterCallback(IUEIControlServiceCallback callback);
}
Code:
package com.sony.nfx.app.irremoteservice;
interface IUEIControlServiceCallback {
void onCommandComplete(int i, int j);
void onLearntKey(int i, in byte[] abyte0);
void onGetKeyList(int i, int j, in int[] ai);
}
Basic sample code:
Code:
package ir.remote.android;
import java.util.Arrays;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import com.sony.nfx.app.irremoteservice.IUEIControlService;
import com.sony.nfx.app.irremoteservice.IUEIControlServiceCallback;
public class RemoteTest extends Activity implements ServiceConnection {
private static final String LOG_TAG = "RemoteTest";
private ServiceBinder serviceBinder = new ServiceBinder();
private IUEIControlService remoteService = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String serviceAction = IUEIControlService.class.getName();
Intent serviceIntent = new Intent(serviceAction);
bindService(serviceIntent, this, Context.BIND_AUTO_CREATE);
}
public void onServiceConnected(ComponentName name, IBinder service) {
try {
Log.d(LOG_TAG, "Service connected!");
remoteService = IUEIControlService.Stub.asInterface(service);
remoteService.registerCallback(serviceBinder);
} catch (Exception e) {
Log.e(LOG_TAG, "Error connecting to service!", e);
}
}
public void onServiceDisconnected(ComponentName name) {
Log.d(LOG_TAG, "Service disconnected!");
remoteService = null;
}
public static class ServiceBinder extends IUEIControlServiceCallback.Stub {
public void onCommandComplete(int i, int j) throws RemoteException {
Log.d(LOG_TAG, "onCommandComplete(" + i + ", " + j + ")");
}
public void onGetKeyList(int i, int j, int[] ai) throws RemoteException {
Log.d(LOG_TAG, "onGetKeyList(" + i + ", " + j + ", " + Arrays.toString(ai) + ")");
}
public void onLearntKey(int key, byte[] value) throws RemoteException {
Log.d(LOG_TAG, "onLearntKey(" + key + ", " + Arrays.toString(value) + ")");
}
}
}
Good start
I'm really glad to see someone working on accessing the IR interface. The IR is the primary differentiator that made me decide to buy the Sony Tablet S. I haven't got it yet though, getting it on Monday evening.
I'm only a noob at development, but have started learning Android dev and the start you've made is bound to help. So thanks a lot.
I look forward to seeing your progress.
Luke
Hello Peacemaker2000,
I'm quite new to programing on android (and in java for that matter) so, sorry for the noob questions here.
I have just received my sony tablet last week-end and I think building a custom remote to my needs would be a great hands on exercice
Also I'm a bit disapointed by the natif app which doe not support macro nor look customizaton.
I have tried to start working with all your samples and code to see what I can get to work, but my first concern is about the AIDL files, how do you import the "com.sony.nfx.app.irremoteservice.IUEIControlServiceCallback" ?
The only file that i have found on my tablet, in a "framewok" folder somewhere is "com.sony.nfx.app.irremoteserviceif.jar", I have tried to referenced it by adding to the build path but it is as far as I have been for now.
Any more help / explanation would be greatly appreciated !
Thanks,
Tom.
Good Job Peacemaker,
Main reason i bought it is universal remote control (of course i m an android fan also). If you think that you have to pay 2000$ for a philips pronto remote, SONY did a good start. I am waiting for a customized remote software so to be able to add new buttons, keys etc.
Thank you,
Chris
+1 for me. the ability to have a custom layed out remote with macros and such, I would buy that app.
I ASSUME you have signed up for the sony developers kit they just released, I dl'd it but don't have the time to get into development currently.
Alan
I did subscripbe and download the sdk but only found samples / references for the largescreen / dualscreen layout of the 2 sony tablets, nothing related to the IR.
I did look in to doing something with the IR blaster but couldn't find anything about how to access it. I might start digging around to build the app I was thinking of in my time off over Christmas
Hello to everybody and i wish you a Happy New Year!!!!!!!!!
Any news about IR?
I wonder who will make a new software remote control more customizable, with macros, buttons etc.
Chris
Athens GREECE
I agree with everyone so far about wanting a better app than the remote control one supplied by Sony. I tried learning a macro from my PDA with its universal remote control app, but it refused to learn it. It was OK with single key presses, indeed it is very sensitive.
I bought the Tablet S for my wife, simply because of the eBook reader capability amongst other things but also as a trial for a new replacement universal remote control. This is the first device for ages to have an IR facility built in. I use an old HP Jornada but the screen is mis-behaving after around 10 years of hard labour as a Universal Remote Control. I have found the ability to program my own designed GUI for my numerous cinema, TV etc. devices has been excellent. The Tablet S app is OK in that it has enough keys to cover most remotes. The facility to be able to re-label the keys and choose which of the icons can be which keys is good. It is slightly limited as most of the icons on the left hand panel are fixed labels. Therefore it could be improved.
I would support anyone writing such an app. I would even pay for it! Now that's novel..... Good luck developers.
Thank you so much Peacemaker2000 for sharing your code and ideas.
It works like a charm getting the keys from a remote control and using the data for your own app. I would really like to know what kind of parameters you have to send to get a full keylist of a TV.
Right now I'm just saving the key data from my remote control and don't have any clues how to generally get all possible keys my TV understands. Would be great if you or anybody else who knows this, could share it with us.
If anybody would like to have a functional piece of code from my current prototype, just let me know, right now I have no problems of controlling my Sony Bravia KDL-32W4000.
Perhaps a Mystery Gift app could be developed for use with pokemon gold on a gameboy colour, those were the days
Seems to be quite easy to get a keylist from the actual service:
Code:
int REMOTE_TYPE_ID_KDL_32W4000 = 508;
remoteService.getKeyList(0, REMOTE_TYPE_ID_KDL_32W4000);
You'll get the list in IUEIControlServiceCallback.Stub.onGetKeyList() and execute the appropriate key with:
Code:
int REMOTE_TYPE_ID_KDL_32W4000 = 508;
int ON_OFF_KEY = 18;
remoteService.sendKey(0, REMOTE_TYPE_ID_KDL_32W4000, ON_OFF_KEY, (byte) 0);
remoteService.sendStopIRSend(0);
There you go, TV goes on and off.
I will donate to anyone developing better IR control app.
It will put all that smart LCD screen remotes that they are selling for $1000 and more out of existence.
There is an example of really good IR remote control application. Extremely feature rich. It is called RemoteControl II from http://wincesoft.de/html/remotecontrol_ii.html.
It is only available for Windows CE/Mobile devices.
open source project
hi all, it could be nice to start an open source project, so everyone can collaborate. like me.
david8 said:
hi all, it could be nice to start an open source project, so everyone can collaborate. like me.
Click to expand...
Click to collapse
I've just whipped up a quick Git repo now. Here's the link: https://github.com/agc93/Tablet-S-IR-Control
It'll only be empty atm, because I'm a bit busy at work, but if anyone wants to give it a try, feel free!
agc93 said:
I've just whipped up a quick Git repo now. Here's the link: https://github.com/agc93/Tablet-S-IR-Control
It'll only be empty atm, because I'm a bit busy at work, but if anyone wants to give it a try, feel free!
Click to expand...
Click to collapse
Great! It's a good beginning.
Hi,
I'm an Android beginner developer.
I recently bought a Sony Tablet S and trying to create my own IR Remote App...why?
Sony default IR Remote App don't provides macros.
Here are the main features i'm thiking about:
A dialog box popup automatically when tablet is removed from his dock and shaked...this is managed by a local service)
This dialog provides two options : 1) Default usage of the tablet or 2) Launch my own IR Remote App
This custom App provides only 2 macros : 1) Listen to music or 2) Watch TV
Main challenges i'm facing (as you can easily imagine) is the IR interface implementation.
There's not much code sample on the web, probably because Sony Tablet S is the only device on the market embedding IR interface.
Here are my questions :
Do some one has successfully experienced this technology ?
Is it necessary to root the device before coding with IR interface ?
Do Sony provides specific library to access to IR interface ?
I suppose that each device that i want to remote control (Denon amplifier AVR-2311 and DVico Tvix 6600n for music listening) has an Infrared Hex Code. How do i use it in my classes ?
Waiting for your help
Regards
I for one am very interested in any application that comes close to a Philips Pronto in respect of functionality. The ability to design your own buttons and layouts as wll as have macros is all that is missing from the sony software and I'm sure its possible.
My Pronto is over 10 years old now and one of the reasons for purchasing the Tablet s was as a replacement.
Have a look at the pronto forums on remotecentral.com theres a vast array of downloads of layouts for Pronto edit and hence the hex codes which can be extracted. Many include discrete codes that can't be learned from remotes and are invaluable for macros.
You can also obtain the original editing software and load onto a virtual pronto. If you can produce an ap anything like that then I think you're onto a winner.
Apologies I'm unable to assist on a coding front as I'm a bit of a technonumpty.
Another very confused developer here trying to work out how Sony's bizarre remote calls function. To be honest, not having much luck, and Sony won't help.
If anyone knows how to get it going, please share, because that's all thats stopping me at the moment.
I already posted a working example for sending an IR signal with the tablet. ;-)
I'm also working on an own app with makro-capabilities, custom button layouting (own text, pictures, size, placement) and even custom gestures. I think I can give out a demo in about two weeks, so be a little bit more patient. ;-)
Of course the app will only work with the Tablet S.
Hi I not sure if I'm posting this in the correct section.
Just have a quick question.
In my java android application code I have created and instance of MapView class like this:
MapView mapView = (MapView) findViewById(R.id.mapview);
What does the (MapView) do compared when you normally create an instance of a class like this:
MapView mapView = new MapView(parameters);
Thanks.
The second one is calling constructor with parameter.I am not sure ,but the first one seems like member function calling with casting .
HTC Sense 3.5, Android 2.3.5
Thanks for answering! I tried searching the web for an explanation but not easy to find.
Cheers!
Well... the first one won'k work unless you have a layout which contains a MapView called "mapview".
So first of all you should build your xml layout file.
You can use MapView mapView = new MapView(parameters) and do it all programmatically.. which is definitely harder.
Btw the "Android software development" section would be more appropriate for this question.
Just to elaborate a bit more...in Java, most of the data you work with are types of Objects. The blueprint for the type of Object is called a class. When developing a new Class, you could define this new type of Object from scratch or you could Extend an existing one.
For example, when they whipped up the MapView class, they probably decided that "you know what...MapView's are sort of like other Views (they have gravity, padding, an id, perhaps a position, a border, etc)" and decided to define a skeleton class called View which maps out the aspects that are common to all Views. They likely then made MapView extend View, overriding or adding any aspects that make MapView unique.
So, where am I going with this...back to your code snippet, there's a function called getViewById(id) that--if you look at its definition--is set to return a View. If you just tried to use the result of this function like a MapView, you would run into problems because the Java compiler would have no way of knowing under which circumstances (ie. with which ID) the returned view would actually be a MapView. In these situations where you want to tell the compiler that you want to treat an object like some other type of object, you need to cast the reference to the object. You do this by putting the type you want in parentheses and to the left of the reference you want to cast.
For example, if you made a variable of type View (View mv) and are using it to refer to something you known is a MapView ( View mv = new MapView() ), to treat it like a MapView you need to cast it ( (MapView mv).aMethodUniqueToMapView() ). Keep in mind that unless there's no way an reference to one type could contain an object of another, the compiler will allow the cast. This means that at run time there's a chance you'll get an Exception (a ClassCastException). In certain situations, this is something you'll need to handle but in this case, you're usually good to go as you know for certain the ids you assigned to your views.
Hope this didn't put you to sleep
- chris
Thank you both for answering! =)
Chris or ctttt. Your explanation did not but me to sleep, you explained just what I was asking about! I have done java for only 1 year, and just started programming for my phone, so when I saw the (MapView) casting when you created an instance of a class i just wanted to know how that worked since I haven't seen it being done before =).
Thanks so much for clearing that up =)
Cheers
Questions or Problems Should Not Be Posted in the Development Forum
Please Post in the Correct Forums
Moving to Q&A
Hi guys,
Im really trying to learn java but think Im getting very confused. I have a class which holds names and information, In my android program I have the user enter a load of names which then are passed as an array to my next activity. Whenever I try to create objects from each name in the array it wont do it? Ialso understand that this may be a bad way of doing this as names will change so how would I reference them. Maybe using the array[pos] to create objects... so instead of name.printweight(); I could use 1.printweight();
I really hope above is readable or understandable as to what I am trying to learn
SUDO:
Take in names of competitors
Pass array of competitors to next activity
for loop to get each competitor name entered to a string
create an object using the competitors name (e.g name.birthday)
class competitor:
dob
weight
highest score
time
I think you cant use a string name or an int to create objects but how else would I create several competitors in my class?
Im reading some books I bought and I really am struggling to make sense of all this. Please be patient with me...
Kind regards
Phil
Think I got it.....
for (int i = 0; i < numcompetitors; i++)
{
String competitorName = (String) competitorsArray;
TextView txtOutput = (TextView) findViewById(R.id.edttxtOutput);
txtOutput.append(competitorName + " ");
//create an object of this competitor
competitorsArray = new Competitor();
((Competitor) competitorsArray).average();
}
I couldn't really understand what you are having a problem with. The code you posted might be working but it really doesn't seem like a good way of doing what you are trying to do.
I'd like to help you out but first can you please explain a bit more clearly? Maybe even post your code, so that its easier for me to understand.
So... if I understood you, you need something like this:
class competitor:
dob
weight
highest score
time
Names entered:
A,B,C
Result:
A.dob, A.weight, A.highestscore, A.time
B.dob, B.weight, B.highestscore, B.time
C.dob, C.weight, C.highestscore, C.time
Right? Well, it can't be achieved using Java, it doesn't allow you to assign programatically names to variables. However, you can use a little trick based on an array:
Code:
//Remember: you have a class named "competitor" containing several variables
String[] Names= {"Uno","Dos","Tres"}; //the array passed by the other activity
competitor[] playerData=new competitor[Names.length]; //an array, to store copies of the competitor class (a copy for each name entered)
for(byte i=0;i<Names.length;i++){
playerData[i]=new competitor(); //Initializing the copy...
playerData[i].dob= //Storing data for each name entered...
playerData[i].weight=
playerData[i].highestscore=
playerData[i].time=
}
And that's all... 1st player's data will be stored in the position 0 of the array, 2nd player's data in the position 1... and so on.
BTW, instead use 2 activities, is more easy to use only an activity, changing its layout when you need a GUI's change (yep, it's possible ).
Hey all,
I was attempting to get the hooked application's context with the following code:
Context moduleContext = AndroidAppHelper.currentApplication();
if(moduleContext == null)
Log.v("App", "BOOO");
else
Log.v("App", "WE GOT APP!");
I realised that when I place this snipper in handleloadpackage, moduleContext is null, however if I place it in the beforeHookedMethod for testing, it gets an application context. Are there any other suggestions for getting application context?
You cannot retrieve the application's context if the application is not in memory. handleLoadPackage is run when the package is loaded not the application. You are able to retrieve a context in beforeHookedMethod since the application is active and in memory (and therefore has a context) by that point. If you want to load an application's context as soon as it becomes available try hooking the Application.onCreate method.
If you need a context that is not dependent on an application's lifecycle then you can attempt to retrieve a system context. I have not found any particular issues with this method but if my understanding of the Android internals is correct it could potentially open you up to a memory leak. For what it's worth I've been using this method for quite some time when I need to and have yet to notice any issues. This will not work in initZygote.
Code:
Object activityThread = XposedHelpers.callStaticMethod(XposedHelpers.findClass("android.app.ActivityThread", null), "currentActivityThread");
Context systemCtx = (Context) XposedHelpers.callMethod(activityThread, "getSystemContext");
Hi Kevin M,
Thanks, I eventually ended up using the method that you described, hooking onCreate. Managed to get the context there, thanks though! Hopefully someone will find this post and this may help them too.
Regards,
han
Kevin M said:
You cannot retrieve the application's context if the application is not in memory. handleLoadPackage is run when the package is loaded not the application. You are able to retrieve a context in beforeHookedMethod since the application is active and in memory (and therefore has a context) by that point. If you want to load an application's context as soon as it becomes available try hooking the Application.onCreate method.
If you need a context that is not dependent on an application's lifecycle then you can attempt to retrieve a system context. I have not found any particular issues with this method but if my understanding of the Android internals is correct it could potentially open you up to a memory leak. For what it's worth I've been using this method for quite some time when I need to and have yet to notice any issues. This will not work in initZygote.
Code:
Object activityThread = XposedHelpers.callStaticMethod(XposedHelpers.findClass("android.app.ActivityThread", null), "currentActivityThread");
Context systemCtx = (Context) XposedHelpers.callMethod(activityThread, "getSystemContext");
Click to expand...
Click to collapse
bahbahboom said:
Hi Kevin M,
Thanks, I eventually ended up using the method that you described, hooking onCreate. Managed to get the context there, thanks though! Hopefully someone will find this post and this may help them too.
Regards,
Han
Click to expand...
Click to collapse
I recently found it out while working with dialogs, I thought it would fit here:
If you are making use of the context from onCreate multiple times, you might receive a BadTokenException error at displaying dialogs, etc if the hooked application was launched from the background. To counter this, place a hook in onResume and get the context again.
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