java.net.SocketException: Permission denied报错

[qq_37839174]

在AndroidManifest.xml文件中添加<uses-permission android:name="android.permission.INTERNET" />还是会报错java.net.SocketException: Permission denied

本人菜鸟一枚，刚刚接触android
还请各位大牛帮忙解决一下，感谢！！！
一下是源码：

MainActivity.java
package com.example.httptest;

import android.os.StrictMode;
import android.util.Log;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.content.Intent;
import android.content.res.AssetManager;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Button;

import java.io.*;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.logging.Handler;
import java.util.logging.LogRecord;

import org.json.*;

public class MainActivity extends AppCompatActivity {

private TextView textview = null;
public static String text = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textview = (TextView) findViewById(R.id.textview);
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
}



public void btnOnClick(View view){
new MyThread().start();
textview.setText("text");
}
}

class MyThread extends Thread{
public void run(){
try{
URL url = new URL("http://192.168.1.104:80/www/text.php");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setDoInput(true);
InputStream is = conn.getInputStream();
MainActivity.text = readInputStream(is);
}catch (MalformedURLException e){
e.printStackTrace();
}catch (IOException e){
e.printStackTrace();
}

}

public String readInputStream(InputStream is){
try{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int length = 0;
byte[] buffer = new byte[1024];
while ((length = is.read(buffer))!=-1){
baos.write(buffer,0,length);
}
is.close();
baos.close();
return baos.toString();
}catch (IOException e){
e.printStackTrace();
return "failed";
}
}
}

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

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
</application>

</manifest>

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.httptest.MainActivity"
tools:layout_editor_absoluteY="81dp"
tools:layout_editor_absoluteX="0dp">

<TextView
android:id="@+id/textview"
android:layout_width="200dp"
android:layout_height="200dp"
android:textSize="100sp"
android:background="@android:color/holo_orange_light"
tools:layout_editor_absoluteY="99dp"
tools:layout_editor_absoluteX="-1dp" />

<Button
android:id="@+id/button"
android:layout_width="30dp"
android:layout_height="30dp"
android:text="访问"
android:textSize="30sp"
tools:layout_editor_absoluteY="393dp"
tools:layout_editor_absoluteX="16dp"
android:onClick="btnOnClick"/>

</android.support.constraint.ConstraintLayout>

[qq_37839174]

09-24 23:07:50.997 5428-28953/com.example.httptest W/System.err: java.net.SocketException: Permission denied 09-24 23:07:50.997 5428-28953/com.example.httptest W/System.err: at java.net.Socket.createImpl(Socket.java:454) 09-24 23:07:50.997 5428-28953/com.example.httptest W/System.err: at java.net.Socket.getImpl(Socket.java:517) 09-24 23:07:50.997 5428-28953/com.example.httptest W/System.err: at java.net.Socket.setSoTimeout(Socket.java:1108) 09-24 23:07:50.997 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.Connection.connectSocket(Connection.java:195) 09-24 23:07:50.997 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.Connection.connect(Connection.java:172) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.Connection.connectAndSetOwner(Connection.java:367) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.OkHttpClient$1.connectAndSetOwner(OkHttpClient.java:130) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:330) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:247) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:457) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:405) 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:243) 报错信息如上 09-24 23:07:50.998 5428-28953/com.example.httptest W/System.err: at com.example.httptest.MyThread.run(MainActivity.java:66)

[jklwan]

AndroidManifest.xml中的权限需要放到<application>标签之前。

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

<application...>
……
</application>
</manifest>

[qq_37839174]

调试成功了，感谢！！