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Android Emulatorで「Cleartext HTTP traffic to ${IP} not permitted」エラーが出た場合の対応方法

Last updated at Posted at 2023-06-12

エラー内容

Cleartext HTTP traffic to ${IP} not permitted

原因

Android9からHTTP通信がデフォルトで無効になっている模様。

対策

AndroidManifest.xmlに「usesCleartextTraffic=true」を設定することで回避できる

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:usesCleartextTraffic="true"  追加
        tools:targetApi="31"> 

        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>
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