iOS 真机调试出现：“Please verify that your device’s clock is properly set, and that your signing certificate is not expired.如图1
图1
1.去Xcode ->preferences-> View details,在signing identities中点击Reset,如图2
图2
2.去钥匙串中删除过期证书,如图3
图3
3,检查Provisioning profile设置是否有误,我一般设置为Automatic,如图4
图4
然后重新插入手机,点击fix issue,重新生成证书即可.
