amigo's profile - activity

I'm working on android_tutorial_pubsub. When I modify MainActivity.java, it does not seem to build a new MainActivity-debug.apk. I added log messages to MainActivity.java; Then I did the standard build command (../gradlew debug), uninstalled the old app and then installed the apk file. But the log messages weren't appearing in logcat. Then I noticed that the time stamp on the apk file wasn't changing. When I did a clean and rebuild (debug), my messages appeared in logcat. If I don't do a clean, building doesn't seem to update the apk file. Any ideas what's going on?

Thanks!

I'm new to rosjava. I've been reading a lot from answers.ros.org and various links, but I'm having difficulty building the stuff in rosjava.android.

How do you build the stuff in rosjava.android with gradle?

I'm particularly interested in testing out android_tutorial_pubsub, so I'm trying to build android_gingerbread first to get a jar file, but I'm not sure what gradle command to use.

I know that the following website is for rosjava_core, but I tried the commands anyway: http://docs.rosjava.googlecode.com/hg/rosjava_core/html/building.html

./gradlew tasks

shows

clean debug deployLibs

'debug' doesn't work and 'deployLibs' only copies the libs from rosjava into a libs subdirectory.

Any help would be appreciated. Thanks!

Did you mean to comment out the line in your code:

nodeConfiguration.setMasterUri(URI.create("http://192.168.13.7:11311"));

Did you try the patch here

http://answers.ros.org/question/12771/running-android_tutorial_pubsub?answer=18845#post-id-18845

It uses setMasterUri(getMasterUri()). That worked for me.

Or maybe you have a network problem. What is your setup?

Did you mean to comment out the line // nodeConfiguration.setMasterUri(URI.create("http://192.168.13.7:11311"));?

I actually got the same code to work using the same bag file a few days ago before I got the latest rosjava_core and android_core. I just downgraded rosjava_core and android_core and verified again that it does work on the older versions. So I don't think it's the image size.

I updated my Android SDK Tools to r17 and that seems to have fixed things....

I was able to compile android_tutorial_pubsub before, but something has changed recently and I get these weird dex exceptions from a fresh build:

   [dx] UNEXPECTED TOP-LEVEL EXCEPTION:
   [dx] java.lang.IllegalArgumentException: already added: Lorg/apache/xmlrpc/metadata/XmlRpcSystemImpl$1$1;
   [dx]     at com.android.dx.dex.file.ClassDefsSection.add(ClassDefsSection.java:123)
   [dx]     at com.android.dx.dex.file.DexFile.add(DexFile.java:163)
   [dx]     at com.android.dx.command.dexer.Main.processClass(Main.java:486)
   [dx]     at com.android.dx.command.dexer.Main.processFileBytes(Main.java:455)
   [dx]     at com.android.dx.command.dexer.Main.access$400(Main.java:67)
   [dx]     at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:394)
   [dx]     at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:245)
   [dx]     at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:131)
   [dx]     at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:109)
   [dx]     at com.android.dx.command.dexer.Main.processOne(Main.java:418)
   [dx]     at com.android.dx.command.dexer.Main.processAllFiles(Main.java:329)
   [dx]     at com.android.dx.command.dexer.Main.run(Main.java:206)
   [dx]     at com.android.dx.command.dexer.Main.main(Main.java:174)
   [dx]     at com.android.dx.command.Main.main(Main.java:95)

I'm not sure what they mean. There's about 16 of them. Any ideas?

I've done ./gradlew install on rosjava_core and I set the targets for android_gingerbread and android_tutorial_pubsub before running ../gradlew debug in the android_tutorial_pubsub directory.

As jbohren mentioned, I was building with gradlew at the command-line.

I can't seem to connect to the PC from an Android device running android_tutorial_pubsub.

I changed it so that android_tutorial_pubsub is not running it's own ROS master as per: http://answers.ros.org/question/30726/does-android_tutorial_pubsub-connect-to-other-ros

I use ifconfig to get the IP on the Ubuntu VM (running on a Mac), but when I ping that address from adb shell, it says that it's unreachable.

Also, adb logcat tells me:

E/Registrar(21222): Exception caught while communicating with master.
I/DefaultPublisher(21222): Publisher registration failed: Publisher<publisherdefinition<publisheridentifier<nodeslaveidentifier< android_gingerbread="" ros_text_view,="" <a="" href="http://192.168.0.116:42837">http://192.168.0.116:42837>, TopicIdentifier</rosout>>, TopicDefinition<topicidentifier< rosout="">, MessageDefinition<rosgraph_msgs log,="" acffd30cd6b6de30f120938c17c593fb="">>>>

Am I missing a step somewhere or using the wrong URI?

Edit: I've seen posts about setting ROS_IP and I tried that too (set in .bashrc).

Edit: The problem was with VMWare Fusion. It was a networking setting. In VMWare, select the wrench icon for the VM, then choose "Network Adaptor" and then "Connect Directly to the Physical Network (Bridged)". Now I can ping and the publisher on the android device can send to the ros master on the VM. Yay!

Thanks!