可能重复

你好朋友,

我看过很多样式文件,看到有些时候@log被用在xml文件的样式选项卡中的parent属性中,有些没有这个@就像这样

上述声明与/不使用@有什么区别吗？如果是,那么有什么区别

解决方法:

The at-symbol (@) at the beginning of the string indicates that the

XML parser should parse and expand the rest of the ID string and

identify it as an ID resource. The plus-symbol (+) means that this is

a new resource name that must be created and added to our resources

(in the R.java file). There are a number of other ID resources that

are offered by the Android framework. When referencing an Android

resource ID, you do not need the plus-symbol, but must add the android

package namespace, like so:

android:id="@android:id/empty"

更多的是在这里检查文件.

始终直接跳转代码而不阅读文档.反正真的很糟糕我现在已经学会了先读后再实现的东西

标签：android,coding-style

来源： https://codeday.me/bug/20190704/1378108.html