Xcode9-去掉打印警告信息

2017-10-25 14:21:44.873028+0800 XXX[27753:2131973] [MC] Lazy loading NSBundle MobileCoreServices.framework
2017-10-25 14:21:44.874045+0800 XXX[27753:2131973] [MC] Loaded MobileCoreServices.framework
2017-10-25 14:21:44.889757+0800 XXX[27753:2131973] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /Users/company/Library/Developer/CoreSimulator/Devices/6C236417-EFAB-46D4-986B-4B70EEE22BF9/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles

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2017-10-25 14:21:55.654605+0800 XXX[27753:2131973] [MC] Reading from private effective user settings.
2017-10-25 14:21:55.840633+0800 XXX[27753:2131973] Can't find keyplane that supports type 4 for keyboard iPhone-PortraitChoco-NumberPad; using 4072550144015629828_PortraitChoco_iPhone-Simple-Pad_Default
2017-10-25 14:21:55.885224+0800 XXX[27753:2131973] Can't find keyplane that supports type 4 for keyboard iPhone-PortraitChoco-NumberPad; using 4072550144015629828_PortraitChoco_iPhone-Simple-Pad_Default
2017-10-25 14:22:01.055023+0800 XXX[27753:2131973] Can't find keyplane that supports type 4 for keyboard iPhone-PortraitChoco-NumberPad; using 4072550144015629828_PortraitChoco_iPhone-Simple-Pad_Default

应用启动，首先打印出分割线上的信息，点击输入手机号的textField(键盘类型设置为纯数字) 打印分割线之下的信息

Snip20171025_3.png

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Xcode8貌似就有这问题，不过一直没有注意过，现在将要新开一个项目，总是那么多日志信息，看着很是烦人，如果你不想看到它，可以这么做:

Product -> Scheme -> Edit Scheme -> Arguments -> Environment Variables -> 添加一栏: Name: OS_ACTIVITY_MODE Value: disable

Snip20171025_5.png