在运行app时，android studio报如下错误
Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> More than one file was found with OS independent path 'META-INF/rxjava.properties'
解决方法：在对应的module下，找到defaultConfig项，添加如下配置可解决：
defaultConfig {
...
packagingOptions {
exclude 'META-INF/rxjava.properties'
}
...
}
