網絡工具類NetworkUtils，供大家參考，具體內容如下
提供的方法：
打開網絡設置界面 openWirelessSettings
判斷網絡是否可用 isAvailable
判斷網絡是否連接 isConnected
判斷網絡是否是4G is4G
判斷wifi是否連接狀態 isWifiConnected
獲取移動網絡運營商名稱 getNetworkOperatorName
獲取移動終端類型 getPhoneType
獲取當前的網絡類型(WIFI,2G,3G,4G) getNetWorkType、getNetWorkTypeName
代碼：
import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.telephony.TelephonyManager;/** * 網絡工具類 */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; /** * 打開網絡設置界面 * <p>3.0以下打開設置界面</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)); } } /** * 獲取活動網絡信息 * * @param context 上下文 * @return NetworkInfo */ private static NetworkInfo getActiveNetworkInfo(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo(); } /** * 判斷網絡是否可用 * <p>需添加權限 {@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(); } /** * 判斷網絡是否連接 * <p>需添加權限 {@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(); } /** * 判斷網絡是否是4G * <p>需添加權限 {@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; } /** * 判斷wifi是否連接狀態 * <p>需添加權限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return {@code true}: 連接<br>{@code false}: 未連接 */ 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; } /** * 獲取移動網絡運營商名稱 * <p>如中國聯通、中國移動、中國電信</p> * * @param context 上下文 * @return 移動網絡運營商名稱 */ public static String getNetworkOperatorName(Context context) { TelephonyManager tm = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return tm != null ? tm.getNetworkOperatorName() : null; } /** * 獲取移動終端類型 * * @param context 上下文 * @return 手機制式 * <ul> * <li>{@link TelephonyManager#PHONE_TYPE_NONE } : 0 手機制式未知</li> * <li>{@link TelephonyManager#PHONE_TYPE_GSM } : 1 手機制式為GSM，移動和聯通</li> * <li>{@link TelephonyManager#PHONE_TYPE_CDMA } : 2 手機制式為CDMA，電信</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; } /** * 獲取當前的網絡類型(WIFI,2G,3G,4G) * <p>需添加權限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @param context 上下文 * @return 網絡類型 * <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; } /** * 獲取當前的網絡類型(WIFI,2G,3G,4G) * <p>依賴上面的方法</p> * * @param context 上下文 * @return 網絡類型名稱 * <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"; } }}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VEVB武林網。
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