Xcode无用日志解决方案

小灰灰 2022-01-17 07:23 246阅读 0赞

[为什么80%的码农都做不了架构师？>>> ][80_] ![hot3.png][]

Xcode8输出的日志中有一段奇怪的东西:

2016-09-20 13:12:11.855080 swiftChujian\[6637:3736512\] subsystem: com.apple.UIKit, category: HIDEventFiltered, enable\_level: 0, persist\_level: 0, default\_ttl: 0, info\_ttl: 0, debug\_ttl: 0, generate\_symptoms: 0, enable\_oversize: 1, privacy\_setting: 2, enable\_private\_data: 0

2016-09-20 13:12:11.861153 swiftChujian\[6637:3736512\] subsystem: com.apple.UIKit, category: HIDEventIncoming, enable\_level: 0, persist\_level: 0, default\_ttl: 0, info\_ttl: 0, debug\_ttl: 0, generate\_symptoms: 0, enable\_oversize: 1, privacy\_setting: 2, enable\_private\_data: 0

2016-09-20 13:12:11.880805 swiftChujian\[6637:3736508\] subsystem: com.apple.BaseBoard, category: MachPort, enable\_level: 1, persist\_level: 0, default\_ttl: 0, info\_ttl: 0, debug\_ttl: 0, generate\_symptoms: 0, enable\_oversize: 0, privacy\_setting: 0, enable\_private\_data: 0

2016-09-20 13:12:11.917113 swiftChujian\[6637:3736461\] subsystem: com.apple.UIKit, category: StatusBar, enable\_level: 0, persist\_level: 0, default\_ttl: 0, info\_ttl: 0, debug\_ttl: 0, generate\_symptoms: 0, enable\_oversize: 1, privacy\_setting: 2, enable\_private\_data: 0

2016-09-20 13:12:11.986507 swiftChujian\[6637:3736461\] subsystem: com.apple.BackBoardServices.fence, category: App, enable\_level: 1, persist\_level: 0, default\_ttl: 0, info\_ttl: 0, debug\_ttl: 0, generate\_symptoms: 0, enable\_oversize: 0, privacy\_setting: 0, enable\_private\_data: 0

解决方案:

![132717_qH4K_2519676.png][]

![132739_vL22_2519676.png][]

在Environment Variables中添加 OS\_ACTIVITY\_MODE 为 disable.

在运行,那些日志就没有了.

但是iOS 10真机调试的话，会同时屏蔽掉NSLog。如果NSLog宏定义是这样的话：

\#define NSLog(format, ...) NSLog(format, \#\# \_\_VA\_ARGS\_\_)

在完成OS\_ACTIVITY\_MODE设置后会发现真机调试时NSLog不输出了。

所以需要定义成另一个函数来输出，例如printf()。

NSLog宏定义的写法很多，这里贴上我的写法：

\#ifdef DEBUG

\#define NSLog(format, ...) printf("\[%s\] %s \[第%d行\] %s\\n", \_\_TIME\_\_, \_\_FUNCTION\_\_, \_\_LINE\_\_, \[\[NSString stringWithFormat:format, \#\# \_\_VA\_ARGS\_\_\] UTF8String\]);

\#else

\#define NSLog(format, ...)

\#endif

测试：

NSLog(@"初始化完毕");

NSLog(@"测试NSLog：%@", @"OK");

效果：

\[19:47:57\] -\[ViewController viewDidLoad\] \[第26行\] 初始化完毕

\[19:47:57\] -\[ViewController TestLog\] \[第31行\] 测试NSLog：OK

转载于:https://my.oschina.net/Jerod/blog/755697

[80_]: https://my.oschina.net/u/2663968/blog/3051541
[hot3.png]: /images/20220117/28abad2ef5ff4b1b8a0f5f2fc0a6ca0b.png
[132717_qH4K_2519676.png]: https://static.oschina.net/uploads/space/2016/1009/132717_qH4K_2519676.png
[132739_vL22_2519676.png]: https://static.oschina.net/uploads/space/2016/1009/132739_vL22_2519676.png