安卓监听所有boolean[]元素是否为真

import java.util.ArrayList;
import java.util.List;

interface BooleanArrayObserver {
    void onAllTrue();
}

class BooleanArraySubject {
    private boolean[] array;
    private List<BooleanArrayObserver> observers = new ArrayList<>();

    public BooleanArraySubject(boolean[] array) {
        this.array = array;
    }

    public void addObserver(BooleanArrayObserver observer) {
        observers.add(observer);
    }

    public void removeObserver(BooleanArrayObserver observer) {
        observers.remove(observer);
    }

    public void setElement(int index, boolean value) {
        array[index] = value;
        checkAllTrue();
    }

    private void checkAllTrue() {
        for (boolean b : array) {
            if (!b) {
                return;
            }
        }
        for (BooleanArrayObserver observer : observers) {
            observer.onAllTrue();
        }
    }
}

// 使用示例
public class Main {
    public static void main(String[] args) {
        boolean[] array = {false, false, false};
        BooleanArraySubject subject = new BooleanArraySubject(array);

        subject.addObserver(new BooleanArrayObserver() {
            @Override
            public void onAllTrue() {
                System.out.println("All elements are true!");
            }
        });

        subject.setElement(0, true);
        subject.setElement(1, true);
        subject.setElement(2, true); // 输出 "All elements are true!"
    }
}