Error:(29, 0) No signature of method: java.lang.String.positive() is applicable for argument types: () values: []
Possible solutions: notify(), size(), tokenize(), size()

<a href="openFile:E:\document\Learn\MyselfLearn\Android\code\oschina-android-app-v2.9.0\android-app\app\build.gradle">Open File</a>

Error:(29, 0) No signature of method: java.lang.String.positive() is applicable for argument types_Android开发笔记

后来发现是空格,+号的连接符不能有空格

修改之后

Error:(29, 0) No signature of method: java.lang.String.positive() is applicable for argument types_Android开发笔记_02

可以了。

 

Error:(29, 0) No signature of method: java.lang.String.positive() is applicable for argument types_Android开发笔记_03