Setting Listeners programmatically to an array of CheckBoxes

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So far, I've encountered the issue "variable x is accessed within inner class,needs to be declared final. I am able to initialize the CheckBox's but I am unable to set a listener to them after initialization in the loop. Below is my code so far.

for(int i=0;i<checkBox_fiber_ID.length;i++){
            int temp=getResources().getIdentifier(checkBox_fiber_ID[i],"id",getPackageName());
            checkBoxes_fiber[i]=findViewById(temp);
            checkBoxes_fiber[i].setOnClickListener(new View.OnClickListener(){
                @Override
                public void onClick(View v) {
                    if(checkBoxes_fiber[i].isChecked()){
                        //do something
                    }
                }
            });
        }

Any tips on how to solve this?

Take final String[] x={"defaultvalue Emptry"}

Then after inside onclick Listener set value of x using below code.

x[0]="new value"

and use this value in different function.

as per your code it look likes blow:

final String x[] ={""}
for(int i=0;i<checkBox_fiber_ID.length;i++){
        int temp=getResources().getIdentifier(checkBox_fiber_ID[i],"id",getPackageName());
        checkBoxes_fiber[i]=findViewById(temp);
        checkBoxes_fiber[i].setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                if(checkBoxes_fiber[i].isChecked()){
                   x[0]=checkBoxes_fiber[i].getvalue==> value name
                }
            }
        });
    }

Outside function get value of x using

String name=x[0]

Checkboxes, Interact programmatically · Navigate with dynamic feature modules To create each checkbox option, create a CheckBox in your layout. Because a set of checkbox options allows the user to select multiple items, each checkbox is managed separately and you must register a click listener for each one. How to use checked change listener on CheckBox in android application programmatically. In this tutorial we are implementing setOnCheckedChangeListener() method individually on radio button. So here is the complete step by step tutorial for Add setOnCheckedChangeListener on CheckBox in android.

I guess you are trying to do something base on the checkbox IDs. You can set a tag for a checkBox and get back the tag in future. Also, the view object in method void onClick(View view) is now an CheckBox. Just change a little in your code:

for(int i=0;i<checkBox_fiber_ID.length;i++){
            int temp=getResources().getIdentifier(checkBox_fiber_ID[i],"id",getPackageName());
            checkBoxes_fiber[i]=findViewById(temp);
            checkBoxes_fiber[i].setTag(i); //mark the check box id for later usage
            checkBoxes_fiber[i].setOnClickListener(new View.OnClickListener(){
                @Override
                public void onClick(View view) {
                    if(((CheckBox)view).isChecked()){
                        int checkBoxId = (int)view.getTag();
                        doSomething(checkBoxId);
                    }
                }
            });
        }
}

And write a new method for business code:

public void doSomething(int no){
    if(no==1){
       //do something
    }
    else if(no==2){
       //do something
    }
    //...
}

HOWTO: Checkbox event listener, HOWTO: Checkbox event listener It then finds the child INPUT element whose type is "checkbox", and adds a click (onmouseclick) How to measure the execution time of your Drupal scripts · How to programatically create a simple HowTo: Configure your local workstation to serve multiple sites using Drupal's multisite  To create each checkbox option, create a CheckBox in your layout. Because a set of checkbox options allows the user to select multiple items, each checkbox is managed separately and you must register a click listener for each one. A key class is the following:

You can try to create separate class of listener

 private View.OnClickListener mCheckboxListener = new View.OnClickListener() {
        public void onClick(View v) {
        if(((CheckBox)view).isChecked())
        {
        int checkBoxId = (int)v.getTag();  //You can get Id for specific checkbox
        //do other stuff with checkBoxId
       }
   }
};

And set Id to each checkbox like

for(int i=0;i<checkBox_fiber_ID.length;i++){
            int temp=getResources().getIdentifier(checkBox_fiber_ID[i],"id",getPackageName());
            checkBoxes_fiber[i]=findViewById(temp);
            checkBoxes.setTag(i); //set check box id as tag for later usage
            checkBoxes_fiber[i].setOnClickListener(mCheckboxListener);
        }

Checkbox (Java Platform SE 7 ), Returns an array of all the item listeners registered on this checkbox. Programmatically setting the state of the checkbox will not trigger an ItemEvent . The only  The names array uses a for loop to create an array of checkboxes and a corresponding array of icons. For example, cbs[0], the first checkbox, is assigned the "Security" text caption. At the same time, image[0] receives "Security.png" as a file name for the getResourceStream method when an image for the first icon is created. If a particular

CheckboxMenuItem (Java Platform SE 7 ), Returns an array of all the item listeners registered on this checkbox menuitem. Programmatically setting the state of the check box menu item will not trigger  listView1->View = View::Details; // Allow the user to edit item text. listView1->LabelEdit = true; // Allow the user to rearrange columns. listView1->AllowColumnReorder = true; // Display check boxes. listView1->CheckBoxes = true; // Select the item and subitems when selection is made.

Checkbox API, The API documentation of the Checkbox React component. Learn more about the props and the CSS customization points. CheckBox is a part of JavaFX package. CheckBox is a box with a tick on it when selected and empty when not selected. At first, checkboxes may seem similar to radio buttons, but there exists the difference between them that checkboxes cannot be combined into toggle groups, which means we cannot select multiple options at the same time.

How to Check/Uncheck the checkbox using JavaScript , addEventListener: It allows adding event listeners on any HTML document or other objects that support events. Use window.onload function: It is used to perform  var b = document.getElementById("theButton"); // set the button click event b.onclick = function() { // Use the registry to get the checkbox dijit. cb = registry.byId("dojoCheckbox"); // Set the dojo checkboxes "checked" property to be // opposite what it currently is.

Comments
  • how are the checkboxes created? It seems to be some kind of dynamic setup, in which case using a RecyclerView to dynamically setup the checkboxes and the listeners might be a better way to go. atleast thats what i did.
  • the i variable is not a final variable, is it possible to use the i in an inner class?
  • I don't quite understand the tag variable. How can it be used to check whether or not the checkbox is checked? Sorry, I'm quite new to android.
  • Updated answer.