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/ .
*/
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";
}
}
}
使用方法
if (!NetworkUtils.
isAvailable(
context)) {
Toast.
makeText(
context,"没有网络",Toast.
LENGTH_SHORT).show()
;
return;
}
