Sencha touch navigation issue in back button

Question 1

I had the same trouble. I resolved it by doing this:

In your controller, create a new ref:

backToNav: 'myNavXtypeName button[text=Back]'

In the same controller, link the ref to a control:
```
backToNav: {
        tap: 'backToNav'
}
```
Finally create the controller method that implements the navigation view's pop functionality.
```
backToNav: function() {
        Ext.getCmp('myNavXtypeName').pop()
}
```

Done. Read more about refs and controls here

Question 2

Be careful where you put commas , and check if everything is closed { with } brackets correctly.

Basically you shouldn't put any , before closing brackets } or ] like you did at the end:

    },
});

or after '#CVCs',

    cVCs: '#CVCs',
},

Also are you sure you want to put }, after this.getPanelArea().add(myNewPanel);?

    this.getPanelArea().add(myNewPanel);
},

This will close your controller definition but you have two more function piccsClicked and cvcsClicked that should go before the closing },.

Moreover closing the controller should be }); and not }, (might have been left there accidentaly).

Try this:

var current = 1;
var myPanel = new Array("panelOne", "panelOneP", "panelTwoP", "panelThreeP", "panelFourP", "panelFiveP", "panelOneC", "panelTwoC", "panelThreeC", "panelFourCVC", "panelFiveC", "panelSixCGraph", "panelSixPGraph");

Ext.define("myApp.controller.MainController", {
    extend: "Ext.app.Controller",

    config: {
        refs: {
            main: '#main',
            backButton: '#backButton',
            nextButton: '#nextButton',
            panelArea: '#panelArea', //this panel is in main view along with some other panels, among the other panels there is a panel which contains the back and next buttons
            panelOne: '#panelOne', // these are the views extending Ext.Panel
            panelOneP: '#panelOneP',
            panelTwoP '#panelTwoP',
            panelThreeP: '#panelThreeP',
            panelFourP: '#panelFourP',
            panelFiveP: '#panelFiveP',
            panelSixPGraph: '#panelSixPGraph',
            panelOneC: '#panelOneC',
            panelTwoC: '#panelTwoC',
            panelThreeC: '#panelThreeC',
            panelFourC: '#panelFourC',
            panelFiveC: '#panelFiveC',
            panelSixCGraph: '#panelSixCGraph',
            piccs: '#piccs', // these two are images in the panelOne
            cVCs: '#CVCs'
        },

        control: {
            cVCs: {
                tap: 'cvcsClicked'
            },
            piccs: {
                tap: 'piccsClicked'
            },
            backButton: {
                tap: 'navigateBack'
            },
            nextButton: {
                tap: 'navigateNext'
            }
        }
    },

    navigateBack: function () {
        current = current - 1;
        this.addPanel(myPanel[current]);
    },

    navigateNext: function () {
        current = current + 1;
        this.addPanel(myPanel[current]);
    },

    addPanel: function (newPanel) {
        this.getPanelArea().removeAt(0);
    },
 
    var myNewPanel = Ext.create('Ext.Panel', {
        items: [{
            xtype: "" + newPanel + ""  // every view is given ID exactly as in the array
        }]
    });

    this.getPanelArea().add(myNewPanel);

    piccsClicked: function () {
        var current = this.getPiccs().getSrc();
        if (current == 'resources/images/checkBoxUnchecked.jpg') {
            this.getPiccs().setSrc('resources/images/checkBoxChecked.jpg');
        } else {
            this.getPiccs().setSrc('resources/images/checkBoxUnchecked.jpg');
        }
    },

    cvcsClicked: function () {
        var current = this.getCVCs().getSrc();
        if (current == 'resources/images/checkBoxUnchecked.jpg') {
            this.getCVCs().setSrc('resources/images/checkBoxChecked.jpg');
        } else {
            this.getCVCs().setSrc('resources/images/checkBoxUnchecked.jpg');
        }
    }
});