# 『Flutter』 WebView 問題集
###### tags: `Flutter`
## 1. ERR_cleartext_not_permitted

android文件新增

<application  android:usesCleartextTraffic="true">

位置 android\app\src\main\AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.name">
    <uses-permission android:name="android.permission.INTERNET"/>

    <application  android:usesCleartextTraffic="true">
    </application>
</manifest>

Debug模式在debug文件內修改

## 2. Webview_flutter 長按問題
android 長按問題

解決辦法

* 註解或重寫長按判斷

webview_flutter => webview_android.dart

//onLongPress:(){}

* 使用

gestureRecognizers: Platform.isAndroid ? {Factory(() => EagerGestureRecognizer())} : null

參考
https://github.com/flutter/flutter/issues/37927
https://github.com/flutter/flutter/issues/43792

## 3. 動畫問題
測試webview_flutter物件多時稍微不順
第三方flutter_webview_plugin和原生速度一樣

參考
https://stackoverflow.com/questions/55587918/web-view-is-too-slow
https://github.com/flutter/flutter/issues/54810
https://github.com/flutter/flutter/issues/52211