@Override publicvoidoncreate(Bundle savedInstanceState) {…….} 編譯器會報如下錯誤:The method oncreate(Bundle) of type HelloWorld must override or implement a supertype method,以確保你正確重寫onCreate方法(因為oncreate應(yīng)該為onCreate)。而如果你不加@Override,則編譯器將不會檢測出錯誤,而是會認(rèn)為你為...