Question

我试图使用凌空。

这是我的机器人清单:(由于建议，我已经添加了access_network_state，但我认为并不是真的需要）

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

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

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


    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <activity
            android:name=".MainActivity"
            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>

这是logcat：

12-20 18:02:02.804  32718-32741/com.informaticalab.volleyexample E/Volley﹕ [10218] NetworkDispatcher.run: Unhandled exception java.lang.SecurityException: Permission denied (missing INTERNET permission?)
    java.lang.SecurityException: Permission denied (missing INTERNET permission?)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:451)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
     Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
            at libcore.io.Posix.android_getaddrinfo(Native Method)
            at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:438)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
     Caused by: android.system.ErrnoException: android_getaddrinfo failed: EACCES (Permission denied)
            at libcore.io.Posix.android_getaddrinfo(Native Method)
            at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:438)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
12-20 18:02:56.885      720-743/com.informaticalab.volleyexample E/Volley﹕ [10263] NetworkDispatcher.run: Unhandled exception java.lang.SecurityException: Permission denied (missing INTERNET permission?)
    java.lang.SecurityException: Permission denied (missing INTERNET permission?)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:451)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
     Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
            at libcore.io.Posix.android_getaddrinfo(Native Method)
            at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:438)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
     Caused by: android.system.ErrnoException: android_getaddrinfo failed: EACCES (Permission denied)
            at libcore.io.Posix.android_getaddrinfo(Native Method)
            at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:438)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
12-20 18:04:31.940    1819-1841/com.informaticalab.volleyexample E/Volley﹕ [10403] NetworkDispatcher.run: Unhandled exception java.lang.SecurityException: Permission denied (missing INTERNET permission?)
    java.lang.SecurityException: Permission denied (missing INTERNET permission?)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:451)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
     Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
            at libcore.io.Posix.android_getaddrinfo(Native Method)
            at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:438)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
     Caused by: android.system.ErrnoException: android_getaddrinfo failed: EACCES (Permission denied)
            at libcore.io.Posix.android_getaddrinfo(Native Method)
            at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
            at java.net.InetAddress.lookupHostByName(InetAddress.java:438)
            at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
            at java.net.InetAddress.getAllByName(InetAddress.java:215)
            at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
            at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
            at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
            at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
            at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:373)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
            at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
            at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:109)
            at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
            at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)

我＆＃39;我不确定我做错了什么。即使logcat说存在权限问题，我也想附加我的主要活动：

package com.informaticalab.volleyexample;

import android.content.Context;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONObject;


public class MainActivity extends ActionBarActivity
{

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final TextView mTxtDisplay = (TextView) findViewById(R.id.txtview);
        String url = "";

        JsonObjectRequest jsObjRequest = new JsonObjectRequest
                (Request.Method.GET, url, null, new Response.Listener<JSONObject>()
                {

                    @Override
                    public void onResponse(JSONObject response)
                    {
                        mTxtDisplay.setText("Response: " + response.toString());
                    }
                }, new Response.ErrorListener()
                {

                    @Override
                    public void onErrorResponse(VolleyError error)
                    {
                        mTxtDisplay.setText("Response: Oooops!");
                    }
                });

// Access the RequestQueue through your singleton class.
        MySingleton.getInstance(this).addToRequestQueue(jsObjRequest);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings)
        {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    private static class MySingleton
    {
        private static MySingleton mInstance;
        private RequestQueue mRequestQueue;
        private ImageLoader mImageLoader;
        private static Context mCtx;

        private MySingleton(Context context)
        {
            mCtx = context;
            mRequestQueue = getRequestQueue();

            mImageLoader = new ImageLoader(mRequestQueue,
                                           new ImageLoader.ImageCache()
                                           {
                                               private final android.support.v4.util
                                                       .LruCache<String, Bitmap>
                                                       cache = new android.support.v4.util
                                                       .LruCache<String, Bitmap>(
                                                       20);

                                               @Override
                                               public Bitmap getBitmap(String url)
                                               {
                                                   return cache.get(url);
                                               }

                                               @Override
                                               public void putBitmap(String url, Bitmap bitmap)
                                               {
                                                   cache.put(url, bitmap);
                                               }
                                           });
        }

        public static synchronized MySingleton getInstance(Context context)
        {
            if (mInstance == null)
            {
                mInstance = new MySingleton(context);
            }
            return mInstance;
        }

        public RequestQueue getRequestQueue()
        {
            if (mRequestQueue == null)
            {
                // getApplicationContext() is key, it keeps you from leaking the
                // Activity or BroadcastReceiver if someone passes one in.
                mRequestQueue = Volley.newRequestQueue(mCtx.getApplicationContext());
            }
            return mRequestQueue;
        }

        public <T> void addToRequestQueue(Request<T> req)
        {
            getRequestQueue().add(req);
        }

        public ImageLoader getImageLoader()
        {
            return mImageLoader;
        }
    }

}

Answer 1

这是我的2美分，我有类似的问题。在我更新AndroidManifest.xml以包含android.permission.INTERNET权限后，我仍然在我的logcat中获得了java.lang.SecurityException：权限被拒绝（缺少INTERNET权限？）。

我只是断开连接并重新连接我的Android手机，它确实有效。也许你可以尝试这样做。

您还可以转到设置＆gt;来检查是否有互联网权限。应用＆gt; ＆＃34; YourApp＆＃34;，在PERMISSIONS部分下一直滚动到底部，看看是否有＆＃34;完全网络访问＆＃34;文字与否。

希望这个帮助，干杯

Answer 2

修改：删除了不必要的声明。

你是对的，是：

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

没有必要。您只需要INTERNET权限。

但是所有这一切，与你缺少权限的问题没有任何关系。我这样做就像你一样，它就像一个魅力。只需测试我上面的想法并报告回来。

Answer 3

在AndroidMenifest.xml文件中添加android：usesCleartextTraffic =“ true”作为标签的属性。从Android 9开始很重要

排球＆amp; Android互联网权限不起作用

3 个答案: