NSRunLoopMode 为什么只有两个？ - V2EX

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This topic created in 4116 days ago, the information mentioned may be changed or developed.

文档里只定义了

extern NSString* const NSDefaultRunLoopMode ;
extern NSString* const NSRunLoopCommonModes;

但是 Programming Guide 里提到了五种

NSDefaultRunLoopMode
NSConnectionReplyMode
NSModalPanelRunLoopMode
NSEventTrackingRunLoopMode
NSRunLoopCommonModes

咋回事儿啊？

6 replies • 2015-02-05 17:45:42 +08:00

1

danny106

Feb 5, 2015

只能说所有的定义没有放在同一个头文件

2

georgetso

OP

Feb 5, 2015

@danny106 xcode文档里搜索不到其他定义(除了programming guide外)

3

anerevol

Feb 5, 2015

NSRunLoopCommonModes不是一种模式，是一组模式集合吧。

4

georgetso

OP

Feb 5, 2015

@anerevol 如果只定义了两个，那组合啥？

5

lldong

Feb 5, 2015

因为上面有些是在 Mac 上的 AppKit 里面定义的

6

anerevol

Feb 5, 2015

好像可以自己随便定义的。
https://developer.apple.com/library/prerelease/ios/documentation/Cocoa/Conceptual/Multithreading/RunLoopManagement/RunLoopManagement.html
You can add custom modes to the set using the CFRunLoopAddCommonMode function.

之前稍微看了下，写了点自己的理解，http://anerevol.github.io/ios/2014/07/11/RunLoop%E7%AE%80%E4%BB%8B/

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