Questions tagged [android]

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Subscribing custom topic in ros-mobile

I am using px4-sitl and mavros for UAV simulation in ros noetic and try to teleopt the drone using ros-mobile. what I noted mavros has its own message type defined like ...
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RTAB-MAP Android version , adding ros inputs/outputs

I want to know if someone have done any work on RTAB-MAP Android, I'm trying to add ROS input/output to the Android version but maybe its a too big challenge for me so I try to find someone to help. I ...
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How to use smartphone IMU in ROS?

I would like to get the IMU sensors (accelerometer and gyroscope) on my android smartphone to be usable in ROS running on my laptop so I can use it with SLAM. What would be the best way to go about ...
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How can I get the relative position of a static object to another device with IMU?

I want to be able to search for an lost RFID, in a room. I have an RFID scanner (hand held) and an Android phone with typical sensors (gravity, acceleration, gyroscpose, etc.). I also have RSSI and ...
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ROS GUI for Android

Has anyone developed a ROS GUI for android devices? I want to make a GUI to control a mobile robot depending on ROS packages through android devices. I think I should send ROS messages via WIFI ...
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rosbridge publish to /joy_node: Error Received a message without an op

I am trying to publish joystick movements to the /cmd_vel topic and the /joy_node topic from rosbridge Android. While publishing to the /cmd_vel node works perfectly fine, publishing to /joy_node ...
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High latency images messages

Hello everyone, I have a system composed of a robot (android machine using rosjava) and a computer (roscore), both correctly synchronized. The robot publishes rgb-d images over WiFi. The computer ...
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1 answer
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rviz config file for android sensors

Hi, I'm pretty new to all the ROS ecosystem so please excuse my question if not adequate (and I feel I miss many pieces for the moment...). I'm wondering; is there a config file for ROS Sensors Driver ...
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Android_Core MasterChooser Java Invalid Syntax Error

I am using the basic masterchooser built into the android rosjava_core and I am struggling to connect the robot to my phone. I receive this error: Caused by: java.net.URISyntaxException: Illegal ...
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catkin_make build failed kinetic android

Hi, I'm trying to install Android along with kinetic ROS on Linux 16.04 LTS. Once I get to the "catkin_make" step the build fails. I'm following this tutorial http://wiki.ros.org/android/...
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How does mapping work on Android (ROSjava)?

Hello everyone, I came across these sample applications for android : android_apps There are three applications : make_a_map, map_manager, map_nav I looked into the source code for make_a_map and ...
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Android onActivityResult shutdown (kinetic)

Hi, How should I properly use onActivityResult in my MainActivity that extends RosActivity? In my MainActivity, I call another activity using startactivityforresult, then in that activity I call ...
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ROS Subscriber in Android

I would like to make a Subscriber on my Android-Application which can subscribe the batterydata from the robotino. These Data should be displayed on the apply. In this project i have two nodes which ...
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ROS Master on android is throwing error while closing connection

I am running a public ROS master on an android phone and I am able to subscribe and publish to nodes (running on Android) side from PC. It appears that whenever I close the existing connection (by ...
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1 answer
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Android 8.1 and ROS

Hello, i have an existing application which i must upgrading from Android 6.0 to Android 8.1. I hasnt Problem to increase the targetSdkVersion to 26 (Android 8.0). But when i upgrade the ...
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Unable to publish to subscriber running on android

I am trying to debug a pub-sub node pair implemented on android (ROS-android). Following are the details: ROS-Core is running locally on android. A publisher and a subscriber are also running on the ...
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Android ROS Message

I'm unsure where to turn to get help for my question, so I might try my luck here. I am trying to send a message to a ROS via an Android Application. The message is the string "Hello World". ...
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ERROR: Gradle 'android_10' project refresh failed

ROS Android ...
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Developing with rosjava in Android Studio (Windows)

I need to develop a simple Android which is supposed to show some stats of a robot on the smartphone. I'd like to to this on a windows computer, and if I'm not mistaken that should be possible. ...
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ROS and Android with Kinetic and Android Studio

Hello, I'm trying to get ROS (Kinetic) and Android working together in Android Studio. I followed the tutorial http://wiki.ros.org/android/Tutorials/kinetic/Installation%20-%20Android%20Studio%...
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PubSub tutorial: Android device doesn't receive messages published by PC [solved]

Hey Dear ROS Community, I'm currently building a custom App to control my robot. Therefore I'm testing the PubSub tutorial provided by the android_core package: https://github.com/rosjava/android_core ...
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rosjava publishing to a topic based on user input (button)

I have been playing around with rosjava now for a few days and it is great. I am able to connect my android phone to ros master over usb/wifi and have them publish/subscribe to one another. What I am ...
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MasterChooser cannot find roscore on different PCs on the same network

I'm working with an android app that runs a node that publishes a ros message to use elsewhere. For some unknown reason, MasterChooser only connects to roscore when it's running on one of two ...
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The size of image bytes array changed after published by ros in Android?

I have the problem in one of my ros-android project. In this project, I need to send the sensor messages type of compressed image which comes from the camera preview data to ros-server, however when I ...
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1 answer
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Adding an image publishing node to the android_tutorial_image_transport

Hi guys, I am wondering about how to add an image publisher to original image_transport tutorial project in order to publish the images from Android camera? Here are some ideas I've tried but have not ...
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Error when building android_core

Following http://wiki.ros.org/android/Tutorials/kinetic/Installation%20-%20ROS%20Development%20Environment: When I catkin_make I get the following error msg: path-to-android-sdk/build-tools/25.0.2/...
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Communicate between Android and ROS threads

Hello, I have a simple Java class that launch a thread containing a ROS node ...
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1 answer
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Transmitting data from Android to Nao Robot

Hello everyone, I am now developing a system which consists of Nao robot and a VR headset with an Android phone. What I am trying to do now is getting yaw and pitch values using accelerometer of ...
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Problems to set build.gradle files in my demo that built based on official example android_tutorial_pubsub?

Hello, guys. I'm new to ros, and recently I have trouble to following the official example android_tutorial_pubsub to built my demo. I have been spent a lots of time to set my ros environment in my ...
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catkin_create_android_project error

I'm having some issue to create android packages for my stack. Recently i had been playing with android apps for ROS and it worked fine. As i reinstalled ubuntu yesterday, i fully reinstalled all ...
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1 answer
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Updating android_core to use forked rosjava_core

All, I am trying to debug and issue with rosjava_core when implemented in Android through android_core. I am trying to compile both rosjava_core and android_core from source so I can use my fixed ...
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rosjava ListenerGroup causes android memory leak

I have been developing an Android based application using rosjava and android_core dependencies. I have found an issue with the ListenerDispatch class leaking memory (specifically classes that extend ...
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Does ROS Tango work?

It's been a couple years and I have come back to see if ROS Tango works. Unfortunately, the tutorials fail miserably, requiring old versions of everything from Android Studio 0.6 to unsupported ...
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In ROSJava,how can i transform the 'odom' frame to 'map' frame?

I want to transform the 'odom' frame to the 'map' frame,but i do not know what i will do? In RosJava i saw a class "Transform". ...
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How can I record the robot trajectory and show it on the Android Device?

I want to develop a sweep robot use the turtlebot,But I have no ideal about "Record the robot trajectory" and show it on the Android Device? Maybe it like this sweep robot (mijia). ...
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1 answer
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porting navigation package to android

I want to setup a master using a Thinkpad Notebook, and driving a robot base(such as turtlebot) using a android device. I have tested the demo application, http://wiki.ros.org/android_ndk/Tutorials/...
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Rosbridge doesnt work at SOME smartphones

Hello wise people, I have made WEB application using HTML, JavaScript and Rosbridge to control my robot. Application works perfecty when launched on PC (windows/linux), netbook, laptop, some tablets ...
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Running multiple subscribers in a ROS-android App

Hi, I am trying to create a ROS-android app that contains two subscribers, each subscribing to two different publishers, publishing on two different topics, and on two different message types. I want ...
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1 answer
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Subscriber in sample_app of android_ndk not working

Hello everybody, I'm currently trying to port a c++ Desktop Applicatioon to Android. I have been able to build the andoird_ndk sample app following this tutorial: http://wiki.ros.org/android_ndk/...
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1 answer
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unresolved address when instantiating a service client on rosjava android

Hi, I have roscore and turtlesim_node on an ubuntu running in virtualbox under windows10, and a rosjava android app. The android app is starting correctly, finding the master. I can see the ros graph ...
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do_docker.sh from Android NDK tutorial errors out

Following the Android NDK tutorial at here, when running the do_docker.sh command, the build errors out, it does pull down the docker images, and build a few packages, but when it gets to urdfdom, it ...
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1 answer
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rosjava android AppCompatActivity

All, I have been messing around with rosjava and android and have successfully built a Android application that communicates with ROS using rosjava (I will be posting it on my blog soon www.stratom....
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1 answer
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android_core - Emulator registers topic but not sending events

I've got android_core and rosjava_core as projects under Android Studio. I'm currently running a Ginerbread (API:10) emulator and debugging it. The android_tutorial_pubsub registers it's self as a ...
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What is the measurement unit for cmd_vel in android_teleop?

Hi all, as far as I know the "twist" topics should use S.I. measurements units, but looking at android_teleop for Indigo I noticed that both Forward speed and Rotation speed are in the range ...
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building android_apps errors on Android Studio

Hi all, I tried use Android Studio to import the latest android_apps, but I got build errors. $ git clone -b indigo https://github.com/rosjava/android_apps.git And ...
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Where can I find the rosfusion.py tool?

Dear ROS community, I'm new on ROS, and I'm following the "How to cross-compile any ROS package for Android" tutorial, and everything is ok until the step that I have to add the contents of ...
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android_tutorial_teleop building in android studio, Windows

Hello. I am working on Windows 7 / Android Studio 1.2.2 / JRE 1.8.0. Trying to build (android_tutorial_teleop) package in [android_core]. Downloaded source from here. link text Imported [android_core]...
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Create a new Ros Android application

I've installed rosandroid (http://wiki.ros.org/android) and can run the sample applications/tutorials. Now I want to create a new Android Studio Project and develop my own app. I found this tutorial ...
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Display data from kobuki to android through bluetooth

I have a kobuki. And a lap setup Ros. I need transfer data from this laptop to Android. Anyone have suggest about send data by C, C++ through bluetooth to Android please help me. I can connect ...
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rosjava and android_core

Hi every one!! I am trying to create a app for android who could run ros nodes. But i have a problem when i create it. My enviroment is ros indigo, ubuntu 14.04, android-studio, rosjava and ...
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