tailang/在子线程跑一个timer.md

Last active October 12, 2017 10:50

Star () You must be signed in to star a gist
Fork () You must be signed in to fork a gist

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/tailang/a399ed1cb31c9204d5ec9d236bb59b6a.js"></script>
Save tailang/a399ed1cb31c9204d5ec9d236bb59b6a to your computer and use it in GitHub Desktop.

在子线程跑一个timer

Raw

    dispatch_async(dispatch_get_global_queue(0, 0), ^{
        _link = [CADisplayLink displayLinkWithTarget:self selector:@selector(tick:)];
        // NOTE: 子线程的runloop默认不创建； 在子线程获取 currentRunLoop 对象的时候，就会自动创建RunLoop
        // 这里不加到 main loop，必须创建一个 runloop
        NSRunLoop *runloop = [NSRunLoop currentRunLoop];
        [_link addToRunLoop:runloop forMode:NSRunLoopCommonModes];
        // 必须 timer addToRunLoop 后，再run
        [runloop run];
    });

  