错误消息“ java.net.SocketException：套接字失败：EACCES（权限被拒绝）”

我收到错误消息

java.net.SocketException：套接字失败：EACCES（权限被拒绝）

当我尝试应用以下代码时。这是我调用的函数，并给了我这个例外。

public void run() {
    // TODO Auto-generated method stub
    URL myurl = null;

    try {
        myurl = new URL("http://10.0.2.2/list.JSON");
    }
    catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        URLConnection myconn = myurl.openConnection();
        InputStream in = new BufferedInputStream(myconn.getInputStream());
        InputStreamReader reader = new InputStreamReader(in);
        BufferedReader br = new BufferedReader(reader);
        String line;
        StringBuilder sb = new StringBuilder();
        while ((line=br.readLine()) != null)
        {
            sb.append(line);
            //Toast.makeText(getApplicationContext(), "I enter here", Toast.LENGTH_LONG).show();
        }
        jsoncode = sb.toString();
    }
    catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    threading = true;
    super.run();
}

LogCat：

06-30 11:33:21.457: W/System.err(619): java.net.SocketException: socket failed: EACCES (Permission denied)
06-30 11:33:21.467: W/System.err(619):     at libcore.io.IoBridge.socket(IoBridge.java:573)
06-30 11:33:21.467: W/System.err(619):     at java.net.PlainSocketImpl.create(PlainSocketImpl.java:201)
06-30 11:33:21.479: W/System.err(619):     at java.net.Socket.checkOpenAndCreate(Socket.java:663)
06-30 11:33:21.479: W/System.err(619):     at java.net.Socket.connect(Socket.java:807)
06-30 11:33:21.479: W/System.err(619):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:77)
06-30 11:33:21.479: W/System.err(619):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
06-30 11:33:21.479: W/System.err(619):     at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
06-30 11:33:21.479: W/System.err(619):     at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
06-30 11:33:21.479: W/System.err(619):     at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
06-30 11:33:21.487: W/System.err(619):     at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
06-30 11:33:21.487: W/System.err(619):     at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
06-30 11:33:21.497: W/System.err(619):     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
06-30 11:33:21.497: W/System.err(619):     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
06-30 11:33:21.497: W/System.err(619):     at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
06-30 11:33:21.497: W/System.err(619):     at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
06-30 11:33:21.497: W/System.err(619):     at com.apk.PItestActivity$connection.run(PItestActivity.java:190)
06-30 11:33:21.507: W/System.err(619): Caused by: libcore.io.ErrnoException: socket failed: EACCES (Permission denied)
06-30 11:33:21.517: W/System.err(619):     at libcore.io.Posix.socket(Native Method)
06-30 11:33:21.517: W/System.err(619):     at libcore.io.BlockGuardOs.socket(BlockGuardOs.java:169)
06-30 11:33:21.527: W/System.err(619):     at libcore.io.IoBridge.socket(IoBridge.java:558)
06-30 11:33:21.527: W/System.err(619):     ... 15 more

这是我的清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.apk"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="14" />
    <permission android:name="android.permission.INTERNET"></permission>

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".PItestActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="addfriend"></activity>
        <activity android:name="updateDetails"></activity>
        <activity android:name="Details"></activity>
        <activity android:name="updateimage"></activity>
    </application>
</manifest>

我该如何解决这个问题？

试试看，

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

代替，

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

试试这个：

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

并且您activity names必须像这样使用capital letters：

<activity android:name=".Addfriend"/>
    <activity android:name=".UpdateDetails"/>
    <activity android:name=".Details"/>
    <activity android:name=".Updateimage"/>

试试吧。

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

尝试移到标签<uses-permission>外<application>。

卸载设备上的应用程序，然后重新安装对我来说已修复。

尝试了所有其他选项，一无所获。终于找到了这个帖子。这是在添加权限（如下）并清理内部版本之后。

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

可以通过将行放置在android清单文件中来解决此问题：

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

在此处输入图片说明

将这些源代码添加到您的Java文件中，如下所示：

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());

您可能需要做AndroidStudio-构建-清洁

如果您通过文件系统或Git更新清单，它将不会获取更改。

如果您使用仿真器进行测试，则必须<uses-permission android:name="android.permission.INTERNET" />仅使用而忽略<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />。对我来说这是工作。