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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | iroman |
I want to make a module that could determine pressing the volume buttons Android devices. Although I do not know java, but I found the code that I need on the stackoverflow:
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
int action = event.getAction();
int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_UP:
if (action == KeyEvent.ACTION_DOWN) {
//TODO
}
return true;
case KeyEvent.KEYCODE_VOLUME_DOWN:
if (action == KeyEvent.ACTION_DOWN) {
//TODO
}
return true;
default:
return super.dispatchKeyEvent(event);
}
}
Then I created an application in android studio that works successfully on my device and determines the volume buttons.
Java code from the application:
package com.test.exampleapp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView myTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myTextView = (TextView)findViewById(R.id.myTextView);
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
int action = event.getAction();
int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_UP:
if (action == KeyEvent.ACTION_DOWN) {
myTextView.setText("Volume up pressed!");
}
return true;
case KeyEvent.KEYCODE_VOLUME_DOWN:
if (action == KeyEvent.ACTION_DOWN) {
myTextView.setText("Volume down pressed!");
}
return true;
default:
return super.dispatchKeyEvent(event);
}
}
}
Then I tried to convert this code into code for the module:
package org.godotengine.godot;
import android.app.Activity;
import android.util.Log;
import android.view.KeyEvent;
public class GodotVolumeButtons extends Godot.SingletonBase {
private Activity activity = null; // The main activity of the game
private int instance_id = 0;
public void set_id(int instance_id)
{
this.instance_id = instance_id;
Log.d("godot", "GodotVolumeButtons: set_id");
}
// @Override
public boolean dispatchKeyEvent(KeyEvent event) {
int action = event.getAction();
int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyEvent.KEYCODE_VOLUME_UP:
if (action == KeyEvent.ACTION_DOWN) {
Log.d("godot", "Volume down pressed!");
GodotLib.calldeferred(instance_id, "_on_volume_up_pressed", new Object[] { });
}
return true;
case KeyEvent.KEYCODE_VOLUME_DOWN:
if (action == KeyEvent.ACTION_DOWN) {
Log.d("godot", "Volume down pressed!");
GodotLib.calldeferred(instance_id, "_on_volume_down_pressed", new Object[] { });
}
return true;
default:
return dispatchKeyEvent(event);
}
}
/* Definitions
* ********************************************************************** */
/**
* Initilization Singleton
* @param Activity The main activity
*/
static public Godot.SingletonBase initialize(Activity activity) {
return new GodotVolumeButtons(activity);
}
/**
* Constructor
* @param Activity Main activity
*/
public GodotVolumeButtons(Activity activity) {
registerClass("GodotVolumeButtons", new String[] { "set_id" });
this.activity = activity;
}
}
With this code, export templates are compiled without errors. When debugging, this module is defined, but the calldeferred does not work.
Please tell me, what did I do wrong, or what did not I do?