在应用程序的BaseApplication类中添加如下代码：

public class BaseApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
            @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
                Log.d("ActivityLifecycle", activity.getLocalClassName() + " created");
            }

            @Override
            public void onActivityStarted(Activity activity) {
                Log.d("ActivityLifecycle", activity.getLocalClassName() + " started");
            }

            @Override
            public void onActivityResumed(Activity activity) {
                Log.d("ActivityLifecycle", activity.getLocalClassName() + " resumed");
            }

            @Override
            public void onActivityPaused(Activity activity) {
                Log.d("ActivityLifecycle", activity.getLocalClassName() + " paused");
            }

            @Override
            public void onActivityStopped(Activity activity) {
                Log.d("ActivityLifecycle", activity.getLocalClassName() + " stopped");
            }

            @Override
            public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
            }

            @Override
            public void onActivityDestroyed(Activity activity) {
                Log.d("ActivityLifecycle", activity.getLocalClassName() + " destroyed");
            }
        });
    }
}

这样，就可以在应用程序中监测到所有Activity的生命周期，从而进行相应的操作。