system.log when I select Xcode -> Debug -> Attach to process
并且 附加到流程 为空。
答案 0 :(得分:5)
对我有用的是:
- unplug my phone
- reboot it
- quit Xcode and instruments
- plug my phone in again
- opened Xcode and launched instruments and it worked.
答案 1 :(得分:1)