How is the android checkbox used?

The Android CheckBox is a widget that allows users to select or deselect it, and it inherits from the CompoundButton class. You can use the CheckBox tag in a layout file to create a checkbox.

The instructions for use are as follows:

1. Add a CheckBox tag in the layout file.

<CheckBox
    android:id="@+id/checkbox"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="CheckBox" />

1. In Java code, retrieve an instance of a CheckBox and set a listener.

CheckBox checkBox = findViewById(R.id.checkbox);
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            // 复选框被选中
        } else {
            // 复选框被取消选中
        }
    }
});

By setting up a listener, you can perform certain actions when a user checks or unchecks a checkbox.

In addition, CheckBox also offers some commonly used properties and methods, such as setting the text of the checkbox, setting the checked state of the checkbox, and getting the checked state of the checkbox. These can be further utilized based on requirements.