ReactNativeiOS（三）开发零碎1 Fetch错误Network request failed

开发状态下，如果网络不通，或者 api 无效，都会给出一个大红屏幕，写着Network request failed

这个是开发状态的，实际release的产品不会，但还是要处理掉这些异常，红色屏幕对开发也是不友好的

对于ES6不熟，只好查资料，https://github.com/facebook/react-native/issues/973

jbhatab commented on Apr 23

This is what happens when I make a failed api request. Are failed api requests supposed to break the app like this? Is there a good way to have a fallback?

jbhatab changed the title from  Network request failed to Failed API request breaks app on Apr 23

burriko commented on Apr 23

Can we see your code? I haven't had any problems catching errors from network problems so far.

Here's an example using fetch().

fetch('http://example.com/stuff.json')      .then(response => response.json())      .then(json => this._handleResponse(json))      .catch(error => {        React.AlertIOS.alert(          'Error',          'There seems to be an issue connecting to the network.'        );      });

joshbedo commented on Apr 24

Adding a catch solved this issue for me, thanks! :)

brentvatne changed the title from  Failed API request breaks app to [fetch] Failed API request breaks appon May 31

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brentvatne commented on May 31

This should only happen in development mode, if you can reproduce with development mode disabled, please ping me and I'll reopen this issue! @jbhatab