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【Android 应用开发】Android开发技巧--Application, ListView排列,格式化浮点数,string.xml占位符,动态引用图片

一. Application用途1. Application用途创建Application时机 : Application在启动的时候会调用Application无参的构造方法创建实例; Application构造方法 : Application的无参的构造方法必须是public的, 否则运行的时候...

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