CocoaPods adding a third-party library error

1, terminal error: The dependency mbprogresshud (~> 0.9.2) is not used in any concrete target.

2, Reason: Cocoapods upgrade to the latest version (including some high version), the contents of the Podfile file must clearly indicate the use of the third-party library TargetName.

3, Error Analysis: Low version and high version of the wording is different.

Low version:

Platform:ios, ' 8.0 '
Pod ' Mbprogresshud ', ' ~> 0.9.2 '

High version:

Platform:ios, ' 8.0 '
Target "TargetName" do
Pod ' Mbprogresshud ', ' ~> 0.9.2 '
End

Note: Here's the name of the TargetName to fill out the project.

CocoaPods adding a third-party library error