react-native - React native 应用程序卡在启动画面

Question

我有一个使用 Ignite Red Boilerplate 编码的 React native 应用程序和应用程序有时只停留在启动屏幕(启动屏幕)。然后我回到之前的提交并再次启动应用程序，它开始按预期工作。

帮助您找到解决方案:

1. 我正在使用这个闪屏模块:React native splash screen
2. Ignite red 附带一个登录 Saga并且我添加了另一个注册 saga，在我实际卸载应用程序并重新安装之前它一直运行良好，然后当应用程序安装时，它永远不会通过初始屏幕。
3. 我在任何地方都没有看到任何日志，也尝试在 Xcode 中运行它，但没有调试日志，我怎么能在模拟器系统日志中看到以下内容，我将一些内容粘贴到这里。希望有人能帮我解码。

Feb 16 09:46:11 MAC009s-Mac-mini NyteVibe[1709]: Running application NyteVibe ({
	    initialProps =     {
	    };
	    rootTag = 1;
	})
Feb 16 09:46:11 MAC009s-Mac-mini NyteVibe[1709]: Running application "NyteVibe" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF
Feb 16 09:46:12 MAC009s-Mac-mini NyteVibe[1709]: undefined is not an object (evaluating 'el.props.component')
Feb 16 09:46:12 MAC009s-Mac-mini NyteVibe[1709]: Unhandled JS Exception: undefined is not an object (evaluating 'el.props.component')
Feb 16 09:46:12 MAC009s-Mac-mini NyteVibe[1709]: action @ 09:46:12.030 STARTUP
Feb 16 09:46:12 MAC009s-Mac-mini NyteVibe[1709]: '%c prev state', 'color: #9E9E9E; font-weight: bold', { temperature: { temperature: null, fetching: null, error: null, city: null },
	  login: { user: null, error: null, fetching: false },

Feb 16 09:46:12 MAC009s-Mac-mini NyteVibe[1709]: —— log end ——
Feb 16 09:46:12 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 7 Connection has no connected handler
Feb 16 09:46:13 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 8 Connection has no connected handler
Feb 16 09:46:14 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 9 Connection has no connected handler
Feb 16 09:46:16 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 10 Connection has no connected handler
Feb 16 09:46:16 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 11 Connection has no connected handler
Feb 16 09:46:18 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 12 Connection has no connected handler
Feb 16 09:46:20 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 13 Connection has no connected handler
Feb 16 09:46:21 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 14 Connection has no connected handler
Feb 16 09:46:22 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 15 Connection has no connected handler
Feb 16 09:46:24 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 16 Connection has no connected handler
Feb 16 09:46:26 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 17 Connection has no connected handler
Feb 16 09:46:26 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 18 Connection has no connected handler
Feb 16 09:46:28 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 19 Connection has no connected handler
Feb 16 09:46:30 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 20 Connection has no connected handler
Feb 16 09:46:31 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 21 Connection has no connected handler
Feb 16 09:46:32 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 22 Connection has no connected handler
Feb 16 09:46:34 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 23 Connection has no connected handler
Feb 16 09:46:36 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 24 Connection has no connected handler
Feb 16 09:46:36 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 25 Connection has no connected handler
Feb 16 09:46:38 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 26 Connection has no connected handler
Feb 16 09:46:40 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 27 Connection has no connected handler
Feb 16 09:46:41 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 28 Connection has no connected handler
Feb 16 09:46:42 MAC009s-Mac-mini NyteVibe[1709]: [] __nw_connection_get_connected_socket_block_invoke 29 Connection has no connected handler

如您在系统日志中所见，前 6 个条目是我的启动操作，它们被完美触发。然后是这个没有连接的处理程序。

Answer 1

你有一个异常(exception):

undefined is not an object (evaluating 'el.props.component')

在您的项目中搜索 el.props.component - 它很可能是在启动期间安装的组件。要么，要么您滥用了具有该代码的第 3 方组件。