在react-native 使用fetch发起ajax请求报错

Question

在react-native中用fetch发起请求，出现以下报错信息：
TypeError: Network request failed

at XMLHttpRequest.xhr.onerror (index.bundle:8369)
at XMLHttpRequest.dispatchEvent (index.bundle:13584)
at XMLHttpRequest.setReadyState (index.bundle:13367)
at XMLHttpRequest.__didCompleteResponse (index.bundle:13221)
at index.bundle:13318
at RCTDeviceEventEmitter.emit (index.bundle:14084)
at MessageQueue.__callFunction (index.bundle:2109)
at index.bundle:1925
at MessageQueue.__guard (index.bundle:2080)
at MessageQueue.callFunctionReturnFlushedQueue (index.bundle:1924)

其中：请求的代码如下：
fetch("http://route.showapi.com/341-1").then(function(response){console.log('你好')}).catch(err => console.log(err));

将这段请求代码，直接在chrome浏览器下运行是会输出：你好。可在RN上为什么就报错了呢？请求指教小弟

Answer 1

iOS？如果要用http协议的话要在Info.plist加入：

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

Answer 2

安卓那边怎么解决的呢？，也遇到这样的问题了