Android 网络工具类NetworkUtils使用
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NetworkUtils工具类里封装了以下方法：
openWirelessSettings : 打开网络设置界面isConnected : 判断网络是否连接isAvailableByPing : 判断网络是否可用getDataEnabled : 判断移动数据是否打开setDataEnabled : 打开或关闭移动数据is4G : 判断网络是否是4GgetWifiEnabled : 判断wifi是否打开setWifiEnabled : 打开或关闭wifiisWifiConnected : 判断wifi是否连接状态isWifiAvailable : 判断wifi数据是否可用getNetworkOperatorName : 获取移动网络运营商名称getNetworkType : 获取当前网络类型getIPAddress : 获取IP地址getDomainAddress : 获取域名ip地址
代码如下：
package com.example.myapplication;import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.telephony.TelephonyManager;import java.util.ArrayList;import java.util.List;/** * Created by dhl on 2016/9/1. */public class NetworkUtils { private NetworkUtils() { throw new UnsupportedOperationException("u can't instance me..."); } public static final int NETWORK_WIFI = 1; // wifi network public static final int NETWORK_4G = 4; // "4G" networks public static final int NETWORK_3G = 3; // "3G" networks public static final int NETWORK_2G = 2; // "2G" networks public static final int NETWORK_UNKNOWN = 5; // unknown network public static final int NETWORK_NO = -1; // no network private static final int NETWORK_TYPE_GSM = 16; private static final int NETWORK_TYPE_TD_SCDMA = 17; private static final int NETWORK_TYPE_IWLAN = 18; public static List<String> typeList = new ArrayList<>(); static { typeList.add("打开网络设置界面"); typeList.add("获取活动网络信息"); typeList.add("判断网络是否可用"); typeList.add("判断网络是否是4G"); typeList.add("判断wifi是否连接状态"); typeList.add("获取移动网络运营商名称"); typeList.add("获取当前的网络类型"); typeList.add("获取当前的网络类型(WIFI,2G,3G,4G)"); } /** * 打开网络设置界面 * <p>3.0以下打开设置界面</p> * * @param context 上下文 */ public static void openWirelessSettings(Context context) { if (android.os.Build.VERSION.SDK_INT > 10) { context.startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS)); } else { context.startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS)); } } /** * 获取活动网络信息 * * @param context 上下文 * @return NetworkInfo */ public static NetworkInfo getActiveNetworkInfo(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo(); } /** * 判断网络是否可用 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return {@code true}: 可用<br>{@code false}: 不可用 */ public static boolean isAvailable(Context context) { NetworkInfo info = getActiveNetworkInfo(context); return info != null && info.isAvailable(); } /** * 判断网络是否连接 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return {@code true}: 是<br>{@code false}: 否 */ public static boolean isConnected(Context context) { NetworkInfo info = getActiveNetworkInfo(context); return info != null && info.isConnected(); } /** * 判断网络是否是4G * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return {@code true}: 是<br>{@code false}: 不是 */ public static boolean is4G(Context context) { NetworkInfo info = getActiveNetworkInfo(context); return info != null && info.isAvailable() && info.getSubtype() == TelephonyManager.NETWORK_TYPE_LTE; } /** * 判断wifi是否连接状态 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return {@code true}: 连接<br>{@code false}: 未连接 */ public static boolean isWifiConnected(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); return cm != null && cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI; } /** * 获取移动网络运营商名称 * <p>如中国联通、中国移动、中国电信</p> * * @param context 上下文 * @return 移动网络运营商名称 */ public static String getNetworkOperatorName(Context context) { TelephonyManager tm = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return tm != null ? tm.getNetworkOperatorName() : null; } /** * 获取移动终端类型 * * @param context 上下文 * @return 手机制式 * <ul> * <li>{@link TelephonyManager#PHONE_TYPE_NONE } : 0 手机制式未知</li> * <li>{@link TelephonyManager#PHONE_TYPE_GSM } : 1 手机制式为GSM，移动和联通</li> * <li>{@link TelephonyManager#PHONE_TYPE_CDMA } : 2 手机制式为CDMA，电信</li> * <li>{@link TelephonyManager#PHONE_TYPE_SIP } : 3</li> * </ul> */ public static int getPhoneType(Context context) { TelephonyManager tm = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return tm != null ? tm.getPhoneType() : -1; } /** * 获取当前的网络类型(WIFI,2G,3G,4G) * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return 网络类型 * <ul> * <li>{@link #NETWORK_WIFI } = 1;</li> * <li>{@link #NETWORK_4G } = 4;</li> * <li>{@link #NETWORK_3G } = 3;</li> * <li>{@link #NETWORK_2G } = 2;</li> * <li>{@link #NETWORK_UNKNOWN} = 5;</li> * <li>{@link #NETWORK_NO } = -1;</li> * </ul> */ public static int getNetWorkType(Context context) { int netType = NETWORK_NO; NetworkInfo info = getActiveNetworkInfo(context); if (info != null && info.isAvailable()) { if (info.getType() == ConnectivityManager.TYPE_WIFI) { netType = NETWORK_WIFI; } else if (info.getType() == ConnectivityManager.TYPE_MOBILE) { switch (info.getSubtype()) { case NETWORK_TYPE_GSM: case TelephonyManager.NETWORK_TYPE_GPRS: case TelephonyManager.NETWORK_TYPE_CDMA: case TelephonyManager.NETWORK_TYPE_EDGE: case TelephonyManager.NETWORK_TYPE_1xRTT: case TelephonyManager.NETWORK_TYPE_IDEN: netType = NETWORK_2G; break; case NETWORK_TYPE_TD_SCDMA: case TelephonyManager.NETWORK_TYPE_EVDO_A: case TelephonyManager.NETWORK_TYPE_UMTS: case TelephonyManager.NETWORK_TYPE_EVDO_0: case TelephonyManager.NETWORK_TYPE_HSDPA: case TelephonyManager.NETWORK_TYPE_HSUPA: case TelephonyManager.NETWORK_TYPE_HSPA: case TelephonyManager.NETWORK_TYPE_EVDO_B: case TelephonyManager.NETWORK_TYPE_EHRPD: case TelephonyManager.NETWORK_TYPE_HSPAP: netType = NETWORK_3G; break; case NETWORK_TYPE_IWLAN: case TelephonyManager.NETWORK_TYPE_LTE: netType = NETWORK_4G; break; default: String subtypeName = info.getSubtypeName(); if (subtypeName.equalsIgnoreCase("TD-SCDMA") || subtypeName.equalsIgnoreCase("WCDMA") || subtypeName.equalsIgnoreCase("CDMA2000")) { netType = NETWORK_3G; } else { netType = NETWORK_UNKNOWN; } break; } } else { netType = NETWORK_UNKNOWN; } } return netType; } /** * 获取当前的网络类型(WIFI,2G,3G,4G) * <p>依赖上面的方法</p> * * @param context 上下文 * @return 网络类型名称 * <ul> * <li>NETWORK_WIFI </li> * <li>NETWORK_4G </li> * <li>NETWORK_3G </li> * <li>NETWORK_2G </li> * <li>NETWORK_UNKNOWN</li> * <li>NETWORK_NO </li> * </ul> */ public static String getNetWorkTypeName(Context context) { switch (getNetWorkType(context)) { case NETWORK_WIFI: return "NETWORK_WIFI"; case NETWORK_4G: return "NETWORK_4G"; case NETWORK_3G: return "NETWORK_3G"; case NETWORK_2G: return "NETWORK_2G"; case NETWORK_NO: return "NETWORK_NO"; default: return "NETWORK_UNKNOWN"; } }}功能就这么多，下面是我的MainActivity的代码：
package com.example.myapplication;import android.net.NetworkInfo;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.Button;import android.widget.ListView;import android.widget.Switch;import android.widget.Toast;import java.util.ArrayList;import java.util.List;/** * 网络相关操作 */public class MainActivity extends AppCompatActivity { private ListView listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); listView = (ListView)findViewById(R.id.lsit); listView.setAdapter(new CommonAdapter<String>(MainActivity.this,NetworkUtils.typeList,R.layout.list_item) { @Override public void convert(ViewHolder helper, String item) { Button button = helper.getView(R.id.network_button); button.setText(item); } }); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { switch(NetworkUtils.typeList.get(position)) { case "打开网络设置界面": NetworkUtils.openWirelessSettings(MainActivity.this); break; case "获取活动网络信息" : NetworkInfo networkInfo = NetworkUtils.getActiveNetworkInfo(MainActivity.this); Toast.makeText(MainActivity.this, networkInfo.toString(), Toast.LENGTH_SHORT).show(); break; case "判断网络是否可用" : boolean isAvailable = NetworkUtils.isAvailable(MainActivity.this); Toast.makeText(MainActivity.this,isAvailable+"" , Toast.LENGTH_SHORT).show(); break; case "判断网络是否连接" : boolean isConnected = NetworkUtils.isConnected(MainActivity.this); Toast.makeText(MainActivity.this,isConnected+"" , Toast.LENGTH_SHORT).show(); break; case "判断网络是否是4G" : boolean is4G = NetworkUtils.is4G(MainActivity.this); Toast.makeText(MainActivity.this,is4G+"" , Toast.LENGTH_SHORT).show(); break; case "判断wifi是否连接状态" : boolean isWifiConnected = NetworkUtils.isWifiConnected(MainActivity.this); Toast.makeText(MainActivity.this,isWifiConnected+"" , Toast.LENGTH_SHORT).show(); break; case "获取移动网络运营商名称" : String getNetworkOperatorName = NetworkUtils.getNetworkOperatorName(MainActivity.this); Toast.makeText(MainActivity.this,getNetworkOperatorName+"" , Toast.LENGTH_SHORT).show(); break; case "获取移动终端类型" : int getPhoneType = NetworkUtils.getPhoneType(MainActivity.this); Toast.makeText(MainActivity.this,getPhoneType+"" , Toast.LENGTH_SHORT).show(); break; case "获取当前的网络类型" : int getNetWorkType = NetworkUtils.getNetWorkType(MainActivity.this); Toast.makeText(MainActivity.this,getNetWorkType+"" , Toast.LENGTH_SHORT).show(); break; case "获取当前的网络类型(WIFI,2G,3G,4G)" : String getNetWorkTypeName = NetworkUtils.getNetWorkTypeName(MainActivity.this); Toast.makeText(MainActivity.this,getNetWorkTypeName+"" , Toast.LENGTH_SHORT).show(); break; } } }); } private void showToast() { }}两个布局文件：activity_main:
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.myapplication.MainActivity"> <ListView android:id="@+id/lsit" android:layout_width="match_parent" android:layout_height="match_parent" /></RelativeLayout>
item:
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content" android:descendantFocusability="blocksDescendants" > <Button android:id="@+id/network_button" android:layout_width="wrap_content" android:layout_height="wrap_content" /></RelativeLayout>
以及这里用到了鸿洋的通用adapter :
package com.example.myapplication;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import java.util.List;/** * Created by dhl on 2016/7/11. */public abstract class CommonAdapter<T> extends BaseAdapter{ protected LayoutInflater mInflater ; protected Context mContext ; protected List<T> mDatas ; protected final int mItemLayoutId; public CommonAdapter(Context context, List<T> mDatas, int mItemLayoutId) { mInflater = LayoutInflater.from(context); this.mContext = context ; this.mDatas = mDatas; this.mItemLayoutId = mItemLayoutId ; } @Override public int getCount() { return mDatas.size(); } @Override public Object getItem(int position) { return mDatas.get(position); } @Override public long getItemId(int position) { return position; } @Override public int getViewTypeCount() { return 2; } @Override public int getItemViewType(int position) { return position%2 ; } public int getItemLayoutIdByItemViewType(int type) { return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { final ViewHolder viewHolder = getViewHolder(position ,convertView,parent); convert(viewHolder,mDatas.get(position)); return viewHolder.getmConvertView(); } public abstract void convert(ViewHolder helper ,T item); private ViewHolder getViewHolder(int position,View convertView ,ViewGroup parent) { if(mItemLayoutId != 0) { return ViewHolder.get(mContext,convertView,parent,mItemLayoutId,position); }else { return ViewHolder.get(mContext, convertView, parent, getItemLayoutIdByItemViewType(getItemViewType(position)),position); } }}ViewHolder:package com.example.myapplication;import android.content.Context;import android.util.SparseArray;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;/** * Created by dhl on 2016/7/11. */public class ViewHolder { private final SparseArray<View> mViews ; private View mConvertView ; private int mPosition; private ViewHolder(Context context, ViewGroup parent , int layoutId, int position) { this.mViews = new SparseArray<View>(); mConvertView = LayoutInflater.from(context).inflate(layoutId,parent,false); mPosition = position ; mConvertView.setTag(this); } public static ViewHolder get(Context context ,View convertView,ViewGroup parent, int layoutId ,int position) { ViewHolder holder = null ; if(convertView == null) { holder = new ViewHolder(context,parent,layoutId,position); }else { holder = (ViewHolder) convertView.getTag(); holder.mPosition = position; } return holder; } public <T extends View> T getView(int viewId) { View view = mViews.get(viewId); if(view == null) { view = mConvertView.findViewById(viewId); mViews.put(viewId,view); } return (T)view ; } public View getmConvertView() { return mConvertView; } public int getPosition() { return mPosition ; }}以及最后要添加的权限：
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
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