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You can see that PizzaStore depends on a SImpleFactory, which depends on an abstract pizza. Under normal circumstances, to decouple, control inversion is required. The core idea of control inversion is that neither the upper structure nor the lower structure depends on implementation, but on abstraction.四个性格各异的男孩，还有或为家常琐碎操劳或因平凡喜悦欢聚的父母们。一边是高考理想和友情的烦恼，一边懵懂的情愫也在萌芽，有吵嘴也有叛逆懂事，经历过青春期那些得到和失去，从父母的不易体会到生活的艰辛，孩子们渐渐长大。高台门五家人，各有各的小日子，也不断面对着种种变故。高小敏家为房子欠债和爸爸失业，豹子爸下海创业大起大落，杭海患病带来的打击。生活中邻里间虽少不了摩擦，但他们始终相互照应扶持，共同度过难关。五个家庭两代人，过着他们平凡而又不平凡的生活。那些温暖的片段动人的点滴，谱写着那段纯真的岁月MH-H10　　拍摄周期：85天"I see, you said the most difficult moment should be the 20 minutes of gun group transfer fire? So in essence, the reason for the fire gap is not that the artillery group has no ammunition, but that the ammunition is used elsewhere, that is, in the task of annihilating the sudden appearance of the Vietnamese artillery group, so during this period of time, you can only rely on yourself to resist the Vietnamese attack, right? "I said.　　一次意外撞车，陈重结识了叶梅。This process is just speculation. I didn't analyze the source code in depth, but I typed a log and the result was that a series of dispatchTouchEvent () did return true. In other words, ViewGroup1 and ViewGroup2 did not have a consumption event, but dispatchTouchEvent () returned true, so an online saying: DispatchTouchEvent () returned true is a consumption event. This statement may not be completely accurate, but we still need to go to the source code to find the answer. We will not analyze it here, but only explain one problem: don't rewrite dispatchTouchEvent () easily. Even if overridden, try to ensure that the super method is called and the return value is consistent with the super result. In fact, the source code already provides two interfaces to indirectly rewrite it, namely onInterceptTouchEvent () and onTouchEvent (), which can be known from the source code that they are eventually called by dispatchTouchEvent (). Moreover, it is no problem to use the return value of onTouchEvent () to describe whether to consume the event (View that does not consume the event cannot call onTouchEvent () at all).