No joysticks retrieved

Troubleshooting android
1

Hello,

I’m using Android 3.2 and I’m trying to retrieve position and orientation information from the sensors on my android device, but when I do this:

[java]Joystick[] joysticks = inputManager.getJoysticks();[/java]

joysticks array doesn’t contain any elements.

My constructor looks like this:

[java]public static void main(String[] args)
{
Main app = new Main();
AppSettings settings = new AppSettings(true);
settings.setUseJoysticks(true);
app.setSettings(settings);
app.start();
}[/java]

And I’ve also added these lines to the AndroidManifest.xml file:

<uses-feature android:name=“android.hardware.location” />
<uses-feature android:name=“android.hardware.sensor.accelerometer” />
<uses-feature android:name=“android.hardware.sensor.compass” />
<uses-feature android:name=“android.hardware.sensor.gyroscope” />

Am I missing something? Should I do anything else to make it work?

Thank you very much!

2

Sorry, to be more precise, it’s not like the joysticks array is empty, actually inputManager.getJoysticks() call is returning null.

3

I’ve also tried with another device: a samsung galaxy note 10.1 with android 4.1.2, but same problem… I’ve tried to run several code samples I’ve found in the forum but nothing. I know I must be doing something wrong but I’m new at this and I don’t know what else to try… Thank you again! :slight_smile:

4

I’ve never used Android before but I found this after poking around for 20 seconds:
http://hub.jmonkeyengine.org/javadoc/com/jme3/app/AndroidHarness.html#joystickEventsEnabled

5

Indeed, adding this line:

[java]this.joystickEventsEnabled = true;[/java]

in the constructor of the MainActivity class solved the problem. I just thought that including this line:

[java]settings.setUseJoysticks(true);[/java]

in the main method was enough. In other words, I thought that using the joystick abstraction there was no need of editing the MainActivity class.

Thank you for your help.

6
@fegarcia said: Indeed, adding this line:

[java]this.joystickEventsEnabled = true;[/java]

in the constructor of the MainActivity class solved the problem. I just thought that including this line:

[java]settings.setUseJoysticks(true);[/java]

in the main method was enough. In other words, I thought that using the joystick abstraction there was no need of editing the MainActivity class.

Thank you for your help.

Most of what’s on settings is for desktop.

7
@fegarcia said: Indeed, adding this line:

[java]this.joystickEventsEnabled = true;[/java]

in the constructor of the MainActivity class solved the problem. I just thought that including this line:

[java]settings.setUseJoysticks(true);[/java]

in the main method was enough. In other words, I thought that using the joystick abstraction there was no need of editing the MainActivity class.

Thank you for your help.

[java]settings.setUseJoysticks(joystickEventsEnabled);[/java] is set in AndroidHarness. I did it this way so that the MainActivity class could control whether or not the Android sensors were enabled for battery life reasons.

There is a disconnect right now between AndroidHarness (aka MainActivity) and appSettings that I want to eventually clean up.

Also, some work needs to be done in the sensor joystick area to allow for the sensor joystick feedback to be enabled/disabled after the app starts. Right now, it needs to be enabled before the app starts which is why it is located in MainActivity.

8

Thank you very much, guys. Now I understand.

I’m just starting to develop android games using this SDK and it’s awesome. Congratulations for your work :slight_smile: