我知道,“+id”中的“+”表示汇编者会向(R.id.?)资源补充。 然而,人们想知道,如果不把“+”搁置起来,能否获得业绩效益?
或许,例如在处理复杂的清单观点时,排出物?
这并不是差别。 如果您使用<代码>android:id,则始终应为@+id(我想)。 这就是说,你重新指定了这个身份。 否则,正如Rraybritton所说,你重新推荐了身份证。
但是,甚至在汇编时间之前也会产生R。 不仅会减少收益,而且会及时汇编,而且不会在时间上这样做。
“+”是指在R名单上添加,而没有你重新提及已经存在的“国际调查”要素,即“+id/!” @id/
没有任何业绩差异。 对身份证而言,不使用+的唯一原因是,如果你明确宣布身份证,并想提及该身份证,则确保提及该身份证。 例如,如果你不使用+,在你的国际发展名称上有打字,那么你就会发现一个编辑错误,同时将产生一个新条目。
通过使用@+id,你增加了对R的提及,使用@id,你将重复在生成的R类中已经存在的提及。 例如,可以向您的活动提供信息,说明如何在布局中找到具体植被,因为在使用清单操作的习惯布局时就是这种情况。 然后,你将名单上的“id/android”号:清单预先界定。 Same与TabHost和TabWidget。
其余部分没有业绩差别,我想......
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