Found a swap file by the name ".podfile.swp"
owned by: Netban dated: Fri Mar 24 13:57:27 2017
file name: ~Netban/Desktop/StudentGrowth/podfile
modified: YES
user name: Netban host name: NetBanMacBook-Pro.local
process ID: 15310
While opening file "podfile"
dated: Sat Apr 1 11:30:23 2017
NEWER than swap file!

(1) Another program may be editing the same file.
If this is the case, be careful not to end up with two
different instances of the same file when making changes.
Quit, or continue with caution.

(2) An edit session for this file crashed.
If this is the case, use ":recover" or "vim -r podfile"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file ".podfile.swp"
to avoid this message.

Swap file ".podfile.swp" already exists!

問題:就是說當前問價夾下存在了一個.podfile.swp檔案,這樣會匯入無法寫入

解決辦法:
cd 進入工程目錄
ls -a //檢視當前目錄下的檔案
rm -rf ..podfile.swp // 強制刪除
再vimpodfile就好了