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4G
getWifiEnabled : 判断wifi是否打开
setWifiEnabled : 打开或关闭wifi
isWifiConnected : 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;ViewHolder:
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);
}
}
}
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"/>