Podfile不包含任何依赖项

Question

Cocoapod 1.1.1

Xcode 8.1 beta

想要添加Firebase / Core pod

Podfile

# Uncomment the next line to define a global platform for your project
platform :ios, '9.0'

target 'AddPodAdMob' do
source 'https://github.com/CocoaPods/Specs.git' do
use_frameworks!
pod 'Firebase/Core'
end
end

如果不添加源，则不会创建.xcworkspace文件。

现在在pod安装命令后显示此内容。

Pod installation complete! There are 0 dependencies from the Podfile and 0 total pods installed.

[!] The Podfile does not contain any dependencies.

任何帮助请...