Re: [android-developers] Re: Binding to Android service in an external jar doesn't seem to be working
*- I've made the jar approach work before, and intuitively statically linked code shouldn't really be doing anything as long as you're not making references to the resources classes. * I was hoping someone would say this. Thankyou. I will try to paste the code I was trying in a while and then hopefully you could identify any changes. And yes I'm certainly not using resources. *- Why do you think you have to distribute code with an Android library project? You can just remove (everything in) the src/ directory and distribute it that way, no source required. * - Now given that you have got the jar approach to work, I will hold on to the Android Library approach for the moment. On Wednesday, February 13, 2013 5:33:30 PM UTC-8, Kristopher Micinski wrote: I'm still confused for two reasons: - I've made the jar approach work before, and intuitively statically linked code shouldn't really be doing anything as long as you're not making references to the resources classes. - Why do you think you have to distribute code with an Android library project? You can just remove (everything in) the src/ directory and distribute it that way, no source required. I'm not sure why your previous approach wasn't working: I'd have to see an example of what you're doing to postulate as to why you couldn't make it work, but in the end everything is bytecode. Kris On Wed, Feb 13, 2013 at 8:25 PM, RKSHR rks...@gmail.com javascript: wrote: The discussion that I started initially was to find out if a service can be defined in a jar file (not Android library) and if the jar file can be distributed for application developers and if they can bind or start that service ? I was simply unable to do it. Ofcourse, the service was declared in the application's manifest file. Once I created a Android library and defined the service in the library, then it worked fine, but with this approach, source code of the library will have to distributed. RK On Wednesday, February 13, 2013 4:26:51 PM UTC-8, Kristopher Micinski wrote: If I'm not misreading this discussion, the problem is that every service must explicitly be declared in a manifest file. There is no such thing as implicitly or programmatically creating a service. (This has an unfortunate benefit for would be dynamic scripting languages implemented ala JVM wrapper which might otherwise allow you to have first class components..) This is pretty typical: lots of jars for Android are distributed with the caveat that you need to explicitly declare a certain Service in your Android manifest. And yes, library projects basically allow you to do this for the user using your project, so that they don't have to (as) explicitly set up your components. Kris On Wed, Feb 13, 2013 at 5:11 PM, RKSHR rks...@gmail.com wrote: I spent some more time and this is what I found so far. - An app cannot bind to a service or instantiate a service if the service is declared in a jar file (that is not a Android library). Note that I'm just building a jar file using javac compiler and jar utility, without the need for AndroidManifest xml file. I tried creating a TestService class that extends Service class and built that into a jar. In a test app, I imported the jar file and put a break point in onStart() and onCreate() methods of TestService class. In the app I tried calling both bindService and startService, both of them return a false or a null value and the debugger never breaks in onStart() or onCreate(). Both these methods had one line implementations with a just a call to their super class like super.onStart(). - In the next step I moved the TestService outside of the jar into an Android library (in Eclipse enable checkbox Is Library or project.properties should contain android.Library=true ). I built the library and included it into the test app. Now i can instantiate the service using bindService API from the app, the debugger breaks in onStart() and onCreate() methods of TestService class. On Monday, February 11, 2013 4:30:56 PM UTC-8, Lew wrote: RKSHR wrote: No the JAR is not set up as a Library project, as all I have is, compile the classes using javac and then bundle them into a jar using jar builder. You should probably build it as a library project, since it does have something specific to Android in it. I'm not expert in library projects, but as I understand they're the way to package Android stuff for other Android stuff. By nothing specific to android [sic], I meant the classes used within the service, other than the obvious service class. I did not have this service class before and there is a singleton factory class
[android-developers] Re: Binding to Android service in an external jar doesn't seem to be working
I spent some more time and this is what I found so far. - An app cannot bind to a service or instantiate a service if the service is declared in a jar file (that is not a Android library). Note that I'm just building a jar file using javac compiler and jar utility, without the need for AndroidManifest xml file. I tried creating a TestService class that extends Service class and built that into a jar. In a test app, I imported the jar file and put a break point in onStart() and onCreate() methods of TestService class. In the app I tried calling both bindService and startService, both of them return a false or a null value and the debugger never breaks in onStart() or onCreate(). Both these methods had one line implementations with a just a call to their super class like super.onStart(). - In the next step I moved the TestService outside of the jar into an Android library (in Eclipse enable checkbox Is Library or project.properties should contain android.Library=true ). I built the library and included it into the test app. Now i can instantiate the service using bindService API from the app, the debugger breaks in onStart() and onCreate() methods of TestService class. On Monday, February 11, 2013 4:30:56 PM UTC-8, Lew wrote: RKSHR wrote: No the JAR is not set up as a Library project, as all I have is, compile the classes using javac and then bundle them into a jar using jar builder. You should probably build it as a library project, since it does have something specific to Android in it. I'm not expert in library projects, but as I understand they're the way to package Android stuff for other Android stuff. By nothing specific to android [sic], I meant the classes used within the service, other than the obvious service class. I did not have this service class before and there is a singleton factory class that the app was using to instantiate. Now I have moved the factory instantiation into the service class. I want the app to just bind to the service, so the factory instantiation happens in the background within the service. There's a world of difference between nothing and nothing other than... . And that difference might be the difference that makes the difference. You might want to investigate. Lew wrote: RKSHR wrote: I did make sure that there were no R.xx classes in the service, infact I dont need any resources in the service. I did double check again and nothing was present, although an import definition to resources class was left there. I wasn't sure if it would make a difference, but I removed that definition anyway and recompiled the jar without any different result. The application loading the jar, still cannot bind to the service. The service is a very simple class that just instantiates a set of regular java classes (nothing specific to Android). I'm not even able to debug into the service, I have a break point at onStart() and onCreate() methods and it never falls there. I will continue looking. .thanks. nothing specific to Android is obviously false since there's a service class in there. Is the JAR source set up as an Android library project? -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] Re: Binding to Android service in an external jar doesn't seem to be working
The discussion that I started initially was to find out if a service can be defined in a jar file (not Android library) and if the jar file can be distributed for application developers and if they can bind or start that service ? I was simply unable to do it. Ofcourse, the service was declared in the application's manifest file. Once I created a Android library and defined the service in the library, then it worked fine, but with this approach, source code of the library will have to distributed. RK On Wednesday, February 13, 2013 4:26:51 PM UTC-8, Kristopher Micinski wrote: If I'm not misreading this discussion, the problem is that every service must explicitly be declared in a manifest file. There is no such thing as implicitly or programmatically creating a service. (This has an unfortunate benefit for would be dynamic scripting languages implemented ala JVM wrapper which might otherwise allow you to have first class components..) This is pretty typical: lots of jars for Android are distributed with the caveat that you need to explicitly declare a certain Service in your Android manifest. And yes, library projects basically allow you to do this for the user using your project, so that they don't have to (as) explicitly set up your components. Kris On Wed, Feb 13, 2013 at 5:11 PM, RKSHR rks...@gmail.com javascript: wrote: I spent some more time and this is what I found so far. - An app cannot bind to a service or instantiate a service if the service is declared in a jar file (that is not a Android library). Note that I'm just building a jar file using javac compiler and jar utility, without the need for AndroidManifest xml file. I tried creating a TestService class that extends Service class and built that into a jar. In a test app, I imported the jar file and put a break point in onStart() and onCreate() methods of TestService class. In the app I tried calling both bindService and startService, both of them return a false or a null value and the debugger never breaks in onStart() or onCreate(). Both these methods had one line implementations with a just a call to their super class like super.onStart(). - In the next step I moved the TestService outside of the jar into an Android library (in Eclipse enable checkbox Is Library or project.properties should contain android.Library=true ). I built the library and included it into the test app. Now i can instantiate the service using bindService API from the app, the debugger breaks in onStart() and onCreate() methods of TestService class. On Monday, February 11, 2013 4:30:56 PM UTC-8, Lew wrote: RKSHR wrote: No the JAR is not set up as a Library project, as all I have is, compile the classes using javac and then bundle them into a jar using jar builder. You should probably build it as a library project, since it does have something specific to Android in it. I'm not expert in library projects, but as I understand they're the way to package Android stuff for other Android stuff. By nothing specific to android [sic], I meant the classes used within the service, other than the obvious service class. I did not have this service class before and there is a singleton factory class that the app was using to instantiate. Now I have moved the factory instantiation into the service class. I want the app to just bind to the service, so the factory instantiation happens in the background within the service. There's a world of difference between nothing and nothing other than... . And that difference might be the difference that makes the difference. You might want to investigate. Lew wrote: RKSHR wrote: I did make sure that there were no R.xx classes in the service, infact I dont need any resources in the service. I did double check again and nothing was present, although an import definition to resources class was left there. I wasn't sure if it would make a difference, but I removed that definition anyway and recompiled the jar without any different result. The application loading the jar, still cannot bind to the service. The service is a very simple class that just instantiates a set of regular java classes (nothing specific to Android). I'm not even able to debug into the service, I have a break point at onStart() and onCreate() methods and it never falls there. I will continue looking. .thanks. nothing specific to Android is obviously false since there's a service class in there. Is the JAR source set up as an Android library project? -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-d...@googlegroups.comjavascript
[android-developers] Binding to Android service in an external jar doesn't seem to be working
I have an external jar file that we have been using to import into an application apk. Recently I added a Android service class into the jar file, now when I import the file into an apk, I can instantiate all classes except the service. I have declared the service in the applications manifest file (with fully qualified class path), but when I try to bind to the service using context.bindService(intent, connection, BIND_AUTO_CREATE), nothing happens. I dont get any exception, nor an error message, but service is not instantiated, as the return value for bindService is false. I examined the contents of jar file to make sure that the service class is actually included. I also further dedexd the application dex file and even there the library service class was present. Any ideas what could be the problem? I have read several posts on this, but still unable to figure out the problem. What I really want to achieve is provide a Android service class in a library (jar file), so application developers can simply bind to the service and it starts the run within the context of the application. I don't want the service to be remote, hence not using AIDL. Also the jar is built using ant build.xml, its not marked as a library project, but just as a regular jar file that can be imported into any application. The goal is to distribute the jar file without the source code, hence not marking it as library. RK. -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Binding to Android service in an external jar doesn't seem to be working
I did make sure that there were no R.xx classes in the service, infact I dont need any resources in the service. I did double check again and nothing was present, although an import definition to resources class was left there. I wasn't sure if it would make a difference, but I removed that definition anyway and recompiled the jar without any different result. The application loading the jar, still cannot bind to the service. The service is a very simple class that just instantiates a set of regular java classes (nothing specific to Android). I'm not even able to debug into the service, I have a break point at onStart() and onCreate() methods and it never falls there. I will continue looking. .thanks. On Monday, February 11, 2013 12:12:17 PM UTC-8, Streets Of Boston wrote: Maybe this service class uses/loads other classes that fail to load. Strong candidates that may fail to load are R. classes and their members: If your JAR is generatedfrom a library project and if you distribute just the JAR file, you may not distribute any R. classes along with it, since these are not included in the JAR generation of a library project. On Monday, February 11, 2013 2:57:54 PM UTC-5, RKSHR wrote: I have an external jar file that we have been using to import into an application apk. Recently I added a Android service class into the jar file, now when I import the file into an apk, I can instantiate all classes except the service. I have declared the service in the applications manifest file (with fully qualified class path), but when I try to bind to the service using context.bindService(intent, connection, BIND_AUTO_CREATE), nothing happens. I dont get any exception, nor an error message, but service is not instantiated, as the return value for bindService is false. I examined the contents of jar file to make sure that the service class is actually included. I also further dedexd the application dex file and even there the library service class was present. Any ideas what could be the problem? I have read several posts on this, but still unable to figure out the problem. What I really want to achieve is provide a Android service class in a library (jar file), so application developers can simply bind to the service and it starts the run within the context of the application. I don't want the service to be remote, hence not using AIDL. Also the jar is built using ant build.xml, its not marked as a library project, but just as a regular jar file that can be imported into any application. The goal is to distribute the jar file without the source code, hence not marking it as library. RK. -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Binding to Android service in an external jar doesn't seem to be working
Lew, No the JAR is not set up as a Library project, as all I have is, compile the classes using javac and then bundle them into a jar using jar builder. By nothing specific to android, I meant the classes used within the service, other than the obvious service class. I did not have this service class before and there is a singleton factory class that the app was using to instantiate. Now I have moved the factory instantiation into the service class. I want the app to just bind to the service, so the factory instantiation happens in the background within the service. RK On Monday, February 11, 2013 2:02:43 PM UTC-8, Lew wrote: RKSHR wrote: I did make sure that there were no R.xx classes in the service, infact I dont need any resources in the service. I did double check again and nothing was present, although an import definition to resources class was left there. I wasn't sure if it would make a difference, but I removed that definition anyway and recompiled the jar without any different result. The application loading the jar, still cannot bind to the service. The service is a very simple class that just instantiates a set of regular java classes (nothing specific to Android). I'm not even able to debug into the service, I have a break point at onStart() and onCreate() methods and it never falls there. I will continue looking. .thanks. nothing specific to Android is obviously false since there's a service class in there. Is the JAR source set up as an Android library project? -- Lew -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
