Android网络工具类NetworkUtils详解

这篇文章主要为大家详细介绍了Android网络工具类NetworkUtils，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

网络工具类NetworkUtils，供大家参考，具体内容如下

提供的方法：

打开网络设置界面 openWirelessSettings
判断网络是否可用 isAvailable
判断网络是否连接 isConnected
判断网络是否是4G is4G
判断wifi是否连接状态 isWifiConnected
获取移动网络运营商名称 getNetworkOperatorName
获取移动终端类型 getPhoneType
获取当前的网络类型(WIFI,2G,3G,4G) getNetWorkType、getNetWorkTypeName

代码：

 import android.content.Context; import android.content.Intent; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.telephony.TelephonyManager; /** * 网络工具类 */ public class NetworkUtils { public static final int NETWORK_NO = -1;  // no network public static final int NETWORK_WIFI = 1;  // wifi network public static final int NETWORK_2G = 2;  // "2G" networks public static final int NETWORK_3G = 3;  // "3G" networks public static final int NETWORK_4G = 4;  // "4G" networks public static final int NETWORK_UNKNOWN = 5;  // unknown 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; /** * 打开网络设置界面 * 3.0以下打开设置界面
 * * @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 */ private static NetworkInfo getActiveNetworkInfo(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo(); } /** * 判断网络是否可用 * 需添加权限 {@code }
 * * @param context 上下文 * @return {@code true}: 可用
{@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 * 需添加权限 {@code }
 * * @param context 上下文 * @return {@code true}: 是
{@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 * 需添加权限 {@code }
 * * @param context 上下文 * @return {@code true}: 是
{@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 * 需添加权限 {@code }
 * * @param context 上下文 * @return {@code true}: 连接
{@code false}: 未连接 */ public static boolean isWifiConnected(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); return cm != null && cm.getActiveNetworkInfo() != null && cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI; } /** * 获取移动网络运营商名称 * 如中国联通、中国移动、中国电信
 * * @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 *  * {@link TelephonyManager#PHONE_TYPE_NONE } : 0 手机制式未知
 * {@link TelephonyManager#PHONE_TYPE_GSM } : 1 手机制式为GSM，移动和联通
 * {@link TelephonyManager#PHONE_TYPE_CDMA } : 2 手机制式为CDMA，电信
 * {@link TelephonyManager#PHONE_TYPE_SIP } : 3
 * 
 */ 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) * 需添加权限 {@code }
 * * @param context 上下文 * @return 网络类型 *  * {@link #NETWORK_WIFI  } = 1;
 * {@link #NETWORK_4G   } = 4;
 * {@link #NETWORK_3G   } = 3;
 * {@link #NETWORK_2G   } = 2;
 * {@link #NETWORK_UNKNOWN} = 5;
 * {@link #NETWORK_NO   } = -1;
 * 
 */ 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) * 依赖上面的方法
 * * @param context 上下文 * @return 网络类型名称 *  * NETWORK_WIFI  
 * NETWORK_4G   
 * NETWORK_3G   
 * NETWORK_2G   
 * NETWORK_UNKNOWN
 * NETWORK_NO   
 * 
 */ 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"; } } }