net::ERR_CACHE_MISS Android webview 与 <uses-permission android:name="android.permission.INTERNET"/>

Question

我有在颤振上使用 webview 的应用程序。

我在设备上启动应用程序时遇到了这个错误。

net::ERR_CACHE_MISS

我搜索了一下，发现很多文章都说在 AndroidManifest.xml 中添加此权限

<uses-permission android:name="android.permission.INTERNET"/>

但是我已经在 AndroidManfest.xml 中找到了这个

只有从google play下载应用时才会发生这种情况。

我尝试了一些方法。 1) 2) 有效和 3) 无效

1. 使用flutter run 安装设备（有效）

2. 使用签名制作 app bundle fvm flutter build appbundle 并从 bundle 中获取 apk

   bundletool build-apks --bundle=build/app/outputs/bundle/release/app-release.aab
   --output=build/app/outputs/bundle/release/app-release.apks
   --ks=key/my-release-key.jks
   --ks-pass=pass:mypass
   --ks-key-alias=我的别名
   --key-pass=pass:mypass

   然后安装bundletool install-apks --apks=build/app/outputs/bundle/release/app-release.apks

   （有效）

3. 从google play 安装（显示错误）

有什么要点，我应该检查一下吗？？

app/src/main/AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.guessdrawing">
    <!--THe Internet Permission -->
    <uses-permission android:name="android.permission.INTERNET"/>
   <application
        android:label="My whatapp"
        android:icon="@mipmap/launcher_icon">
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />
            <!-- Displays an Android View that continues showing the launch screen
                 Drawable until Flutter paints its first frame, then this splash
                 screen fades out. A splash screen is useful to avoid any visual
                 gap between the end of Android's launch screen and the painting of
                 Flutter's first frame. -->
            <meta-data
              android:name="io.flutter.embedding.android.SplashScreenDrawable"
              android:resource="@drawable/launch_background"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
    </application>
</manifest>

Answer 1

您可以尝试在调试中将相同的跟踪添加到清单文件吗？ 调试/androidManifest.xml

<uses-permission android:name="android.permission.INTERNET"/>