How to handle android back button?

cocos2d-x JavaScript
#1

I am trying to handle back button press in my Cocos2D javascript game. I am using the following code in my Layer class.

var self = this;

cc.eventManager.addListener
    ({
        event: cc.EventListener.KEYBOARD,

        onKeyPressed: function(keyCode, event)
        {
            if (keyCode == cc.KEY.back)
            {
                self.handleBackPress();
            }
        }
    },
    this);

But it is not working. I am getting no response upon pressing back button. What am I doing wrong?

#2

I have this and it works:

cc.eventManager.addListener({
            event: cc.EventListener.KEYBOARD,
            onKeyReleased: this.onKeyReleased
        }, this);

onKeyReleased: function (key, event) {
        var target = event.getCurrentTarget();
        switch(key) {
            case cc.KEY.back:
               //code
                break;
            case cc.KEY.home:
                //code
                break;
        }
    }

May be the problem is in the self var ? I would use target, as in my code, to get the layer.

Edit: onkeyreleased is a function of the layer.

2 Likes
#3

Thank you. It worked when I replaced onKeyPressed with onKeyReleased. Any idea why onKeyPressed was not working?

#4

I am guessing that the Android code doesn’t pass pressed states for back buttons.

I have noticed this comparing Windows and Android implementations in 2.2.6, may very well be true on latest.