Answers for "net:err clear text is nor permitted"

net::ERR_CLEARTEXT_NOT_PERMITTED

// Agrega esta linea en el android/app/src/main/AndroidManifest.xml

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:usesCleartextTraffic="true" <------------- esta linea
        android:theme="@style/AppTheme">

net:ERR_cleartext_not_permitted

android:usesCleartextTraffic="true">