How to check if the checkbox is selected or not in Android?

Question

I am using following code to add checkbox in Android Action Bar :

 <item
    android:id="@+id/action_checkbox"
    app:actionViewClass="android.widget.CheckBox"
    android:title="@string/action_check"
    app:showAsAction="always"
    />

How can I get the value of above checkbox whether it is selected or not as Menu item in android?

Answer 1

You can use isChecked() to get the checked state of a CheckBox :

CheckBox checkBox = (CheckBox) findViewById(R.id.action_checkbox);

if(checkBox.isChecked())
   // do something
else 
   // do something else

Answer 2

your java code where you manage checkbox click event

 @Override
   public boolean onCreateOptionsMenu(Menu menu) {
       getMenuInflater().inflate(R.menu.menu_main, menu);
       MenuItem check = menu.findItem(R.id.action_checkbox);
       CheckBox c_box =(CheckBox) check.getActionView();
       c_box.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
            if(b){
                Toast.makeText(getActivity(), "checked",
                        Toast.LENGTH_SHORT).show();

            }else{
                Toast.makeText(getActivity(), "unchecked",
                        Toast.LENGTH_SHORT).show();
            }
        }
    });
      return true;
   }

your menu looks like ok

<item
android:id="@+id/action_checkbox"
app:actionViewClass="android.widget.CheckBox"
android:title="@string/action_check"
app:showAsAction="always"
/>

Hope it works.. let me know if you face any problem.

Answer 3

Please Refer to Documentation for simple questions like these.

Also onOptionsItemSelected is part of Menu.