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                ### 8.3 Window的創建過程 通過上面的分析可以看出,View是Android中的視圖的呈現方式,但是View不能單獨存在,它必須附著在Window這個抽象的概念上面,因此有視圖的地方就有Window。哪些地方有視圖呢?這個讀者都比較清楚,Android中可以提供視圖的地方有Activity、Dialog、Toast,除此之外,還有一些依托Window而實現的視圖,比如PopUpWindow、菜單,它們也是視圖,有視圖的地方就有Window,因此Activity、Dialog、Toast等視圖都對應著一個Window。本節將分析這些視圖元素中的Window的創建過程,通過本節可以使讀者進一步加深對Window的理解。
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