每日日报2021 5/30

今天学习broadcast的进阶用法。

准备一个关闭所有Activity的ActivityCollector ，这里之前用前面Activity提供的那个!

public class ActivityCollector {
    private static List<Activity> activities = new ArrayList<Activity>();
    public static void addActivity(Activity activity) {
        activities.add(activity);
    }
    public static void removeActivity(Activity activity) {
        activities.remove(activity);
    }
    public static void finishAll() {
        for (Activity activity : activities) {
            if (!activity.isFinishing()) {
                activity.finish();
            }
        }
    }
}