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既然知道我武功盖世，那还敢来武当山？张三丰的暴脾气起来了，动了动筋骨，走上前，真准备接下五大门派所有高手。18. Command Mode怎么样？人找到了吗？龙且颇带怒意的声音响起。Explain the template method mode, which means: in an abstract class, there is a main method, and then define 1... n methods, which can be abstract or actual methods, define a class, inherit the abstract class, override the abstract method, and realize the call to subclasses by calling the abstract class. First look at a diagram:View does not have an interceptor. In order for View to distribute events to its own onTouchEvent, the default implementation (super) of View's dispatchTouchEvent is to distribute events to its own onTouchEvent.The difference between blocking and non-blocking lies in the first stage, that is, the data preparation stage. No matter whether it is blocked or not, the application is used to actively find the kernel for data, and the process of reading data is "blocked" until the data is read.2. Back up the mobile phone data (mobile phone number short message, etc.) after starting up, restore the factory settings, and then re-enter the engineering mode;