How to check if android checkbox is checked within its onClick method (declared in XML)?

Question

I have a checkbox in android which has the following XML:

Answer 1

@BindView(R.id.checkbox_id) // if you are using Butterknife
CheckBox yourCheckBox;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_activity); 
    yourCheckBox = (CheckBox)findViewById(R.id.checkbox_id);// If your are not using Butterknife (the traditional way)

    yourCheckBox.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            yourObject.setYourProperty(yourCheckBox.isChecked()); //yourCheckBox.isChecked() is the method to know if the checkBox is checked
            Log.d(TAG, "onClick: yourCheckBox = " + yourObject.getYourProperty() );
        }
    });
}

Obviously you have to make your XML with the id of your checkbox :

So, the method to know if the check box is checked is : (CheckBox) yourCheckBox.isChecked() it returns true if the check box is checked.