ios - 过多的挂起回调 : 501. 一些挂起的回调可能已经泄露

Question

在我的 react-native 项目中，我收到以下错误消息:

Warning: Please report: Excessive number of pending callbacks: 501. Some pending callbacks that might have leaked by never being called from native code:
{"203":{"module":"MyModule","method":"startProcessing"},"276":{"module":"RNFetchBlob","method":"emitExpiredEvent"},"1855":{},"1856":{},"1857":{},"1858":{},"1859":{},"1860":{},"1861":{},"1862":{},"1863":{},"1864":{},"1865":{},"1866":{},"1867":{},"1868":{},"1869":{},"1870":{},"1871":{},"1872":{},"1873":{},"1874":{},"1875":{},"1876":{},"1877":{},"1878":{},"1879":{},"1880":{},"1881":{},"1882":{},"1883":{},"1884":{},"1885":{},"1886":{},"1887":{},"1888":{},"1889":{},"1890":{},"1891":{},"1892":{},"1893":{},"1894":{},"1895":{},"1896":{},"1897":{},"1898":{},"1899":{},"1900":{},"1901":{},"1902":{},"...(truncated keys)...":451}

谁能告诉我所有这些回调来自哪个模块或如何解释此消息？

Answer 1

这对我来说真的很难追踪。

结果:这只会在我在低规范设备 (Galaxy A12) 上运行时发生。我有一个看起来像这样的钩子(Hook):

  const [state, setState] = useState(1);
  useEffect(() => {
    const t = setInterval(
      () => setState(valueGoesHere),
      200,
    );
    return () => clearInterval(t);
  }, []);

轮询一个值。

这在更高规范的手机上运行良好，但它导致了过多的 promise 问题。您应该梳理您的代码以查找类似上述代码段的任何内容，尤其是使用 setInterval，因为它会积累 promise 并且不允许之前的 promise 在发送前有时间完成。