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2013-05-10 11:49:59 -0500 | asked a question | message types of topics concerning map I am developing an android app communicating with ros, but I don't know the information about map. I have topic names but I don't know which message types should I use. I found on the Internet but failed. Here is the list of topics I need.It's better if I can know more details of those topics. 1. Move_base_simple/goal 2. nitial_pose 3. Move_base/local_costmap/inflated_obstacles 4. move_base/NavfnROS/plan 5.move_base/local_costmap/robot_footprint 6.move_base/local_costmap/obstacles Thanks a lot. |
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2013-04-07 22:00:35 -0500 | asked a question | ros audio_common play Problem I want to transmit mp3 stream to a tablet running android, and play it on tablet. I have implemented an android program to receive stream and write in a receiver.mp3 file. but I cannot play it. I guess is is something about decorder problem. Confused. Here is my source code. } here is program similar to rosimageview.java }here is program to transfer message to byte[] and I execute audioReceiver in nodeMainExecutor in mainActivity. I use audio_common but I prefer PWM format, mp3 has so many problem with codec and decode. have any idea of using other tools? my aim is just transmitting and receiving audio signal between ros and android. |
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2013-03-21 12:30:33 -0500 | commented answer | what's rosjava mechanism on android? Thanks , I am more clear now |
2013-03-21 00:13:24 -0500 | asked a question | what's audio type of audio_common msg on android,I want to receive and play audio recorded on ros, but I don't know stream type of the audio, is it mp3 or PWM, and what's sample rate and bit rate, confused ? |
2013-03-21 00:07:33 -0500 | asked a question | what's rosjava mechanism on android? I saw on the Internet that the java library is just a reference to ros package, if on 2 PCs java program can execute corresponding ros nodes, but on android platform , there is no ros node available, how can this be executed. I mean, maybe ros nodes are in C++, and java can just run that on ros, but on android, how can java run these packages? |
2013-03-19 02:33:45 -0500 | answered a question | Defining Custom Message Types for Rosjava Android I saw on the Internet that the java library is just a reference to ros package, if on 2 PCs java program can execute corresponding ros nodes, but on android platform , there is no ros node available, how can this be executed. I mean, maybe ros nodes are in C++, and java can just run that on ros, but on android, how can java run these packages? |
2013-03-19 02:26:10 -0500 | commented answer | android_tutorial_image_transport cannot receive image I need to set ros_ip in every terminal, and need to run roscore at the same time, any idea to set ros_ip so I don't need to set it in every terminal ? |
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2013-03-15 03:20:27 -0500 | asked a question | android_tutorial_image_transport cannot receive image I run android_tutorial_image_transport on android, but cannot receive image from PC, image node on PC is ok,but logcat says :03-15 13:56:37.209: E/UpdatePublisherRunnable(10447): java.lang.RuntimeException: java.net.UnknownHostException: ubuntu |