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知乎专栏

第 136 章 杂项

目录

136.1. Caused by: java.net.UnknownServiceException: CLEARTEXT communication to 47.100.253.187 not permitted by network security policy
136.2. 设计模式
136.2.1. 单例模式
136.3. Android OS 包
136.3.1. 进程ID
136.3.2. handler
136.4. fastjson android
136.4.1. 对象转字符串
136.4.2. JsonObject 转对象
136.4.3. 字符串 与 json 互转
136.4.4. json 转 数组
136.4.5. JSON数组转List
136.4.6. Map 与 Json 互转
136.5. Butter Knife
136.6. Android Things
136.6.1. GPIO

136.1. Caused by: java.net.UnknownServiceException: CLEARTEXT communication to 47.100.253.187 not permitted by network security policy

在AndroidManifest.xml的文件的application节点中增加 android:usesCleartextTraffic="true"

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

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    
    <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:theme="@style/Theme.Ropeway"
        android:usesCleartextTraffic="true"
        tools:targetApi="31">
        <service
            android:name=".service.RopewayService"
            android:enabled="true"
            android:exported="true"></service>
        <service
            android:name=".service.BroadcastService"
            android:enabled="true"
            android:exported="true" />

        <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>
    <meta-data
        android:name="apiUrl"
        android:value="http://47.100.25.18:8000" />
</manifest>