安卓开发一般都需要和网络打交道,常用操作老司机已为你封装完毕,经常有小伙伴问怎么判断wifi连上了是否可用,那我告诉你,你可以用ping或者访问你们服务端的一个接口查看返回状态,老司机已用ping为你封装了isWifiAvailable,具体可以查看源码,现在为你开车,Demo传送门。
站点
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
具体路线
import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.telephony.TelephonyManager;import java.lang.reflect.Method;import java.net.InetAddress;import java.net.NetworkInterface;import java.net.Socket;import java.net.SocketException;import java.net.UnknownHostException;import java.util.Enumeration;import java.util.concurrent.Callable;import java.util.concurrent.ExecutionException;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import java.util.concurrent.Future;import java.util.concurrent.TimeUnit;import java.util.concurrent.TimeoutException;/** * <pre> * author: Blankj * blog : http://blankj.com * time : 2016/8/2 * desc : 网络相关工具类 * </pre> */public class NetworkUtils { private NetworkUtils() { throw new UnsupportedOperationException("u can't instantiate me..."); } public enum NetworkType { NETWORK_WIFI, NETWORK_4G, NETWORK_3G, NETWORK_2G, NETWORK_UNKNOWN, NETWORK_NO } /** * 打开网络设置界面 * <p>3.0以下打开设置界面</p> */ public static void openWirelessSettings() { if (android.os.Build.VERSION.SDK_INT > 10) { Utils.getContext().startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)); } else { Utils.getContext().startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)); } } /** * 获取活动网络信息 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @return NetworkInfo */ private static NetworkInfo getActiveNetworkInfo() { ConnectivityManager cm = (ConnectivityManager) Utils.getContext() .getSystemService(Context.CONNECTIVITY_SERVICE); return cm.getActiveNetworkInfo(); } /** * 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> * * @return {@code true}: 是<br>{@code false}: 否 */ public static boolean isConnected() { NetworkInfo info = getActiveNetworkInfo(); return info != null && info.isConnected(); } /** * 判断网络是否可用 * <p>需添加权限 {@code <uses-permission android:name="android.permission.INTERNET"/>}</p> * * @return {@code true}: 可用<br>{@code false}: 不可用 */ public static boolean isAvailableByPing() { ShellUtils.CommandResult result = ShellUtils.execCmd("ping -c 1 -w 1 223.5.5.5", false); boolean ret = result.result == 0; if (result.errorMsg != null) { LogUtils.d("isAvailableByPing errorMsg", result.errorMsg); } if (result.successMsg != null) { LogUtils.d("isAvailableByPing successMsg", result.successMsg); } return ret; } /** * 判断移动数据是否打开 * * @return {@code true}: 是<br>{@code false}: 否 */ public static boolean getDataEnabled() { try { TelephonyManager tm = (TelephonyManager) Utils.getContext().getSystemService(Context.TELEPHONY_SERVICE); Method getMobileDataEnabledMethod = tm.getClass().getDeclaredMethod("getDataEnabled"); if (null != getMobileDataEnabledMethod) { return (boolean) getMobileDataEnabledMethod.invoke(tm); } } catch (Exception e) { e.printStackTrace(); } return false; } /** * 打开或关闭移动数据 * <p>需系统应用 需添加权限{@code <uses-permission android:name="android.permission.MODIFY_PHONE_STATE"/>}</p> * * @param enabled {@code true}: 打开<br>{@code false}: 关闭 */ public static void setDataEnabled(boolean enabled) { try { TelephonyManager tm = (TelephonyManager) Utils.getContext().getSystemService(Context.TELEPHONY_SERVICE); Method setMobileDataEnabledMethod = tm.getClass().getDeclaredMethod("setDataEnabled", boolean.class); if (null != setMobileDataEnabledMethod) { setMobileDataEnabledMethod.invoke(tm, enabled); } } catch (Exception e) { e.printStackTrace(); } } /** * 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> * * @return {@code true}: 是<br>{@code false}: 否 */ public static boolean is4G() { NetworkInfo info = getActiveNetworkInfo(); return info != null && info.isAvailable() && info.getSubtype() == TelephonyManager.NETWORK_TYPE_LTE; } /** * 判断wifi是否打开 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>}</p> * * @return {@code true}: 是<br>{@code false}: 否 */ public static boolean getWifiEnabled() { WifiManager wifiManager = (WifiManager) Utils.getContext().getSystemService(Context.WIFI_SERVICE); return wifiManager.isWifiEnabled(); } /** * 打开或关闭wifi * <p>需添加权限 {@code <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>}</p> * * @param enabled {@code true}: 打开<br>{@code false}: 关闭 */ public static void setWifiEnabled( boolean enabled) { WifiManager wifiManager = (WifiManager)Utils.getContext().getSystemService(Context.WIFI_SERVICE); if (enabled) { if (!wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(true); } } else { if (wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(false); } } } /** * 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> * * @return {@code true}: 连接<br>{@code false}: 未连接 */ public static boolean isWifiConnected() { ConnectivityManager cm = (ConnectivityManager) Utils.getContext() .getSystemService(Context.CONNECTIVITY_SERVICE); return cm != null && cm.getActiveNetworkInfo() != null && cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI; } /** * 判断wifi数据是否可用 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>}</p> * <p>需添加权限 {@code <uses-permission android:name="android.permission.INTERNET"/>}</p> * * @return {@code true}: 是<br>{@code false}: 否 */ public static boolean isWifiAvailable() { return getWifiEnabled() && isAvailableByPing(); } /** * 获取网络运营商名称 * <p>中国移动、如中国联通、中国电信</p> * * @return 运营商名称 */ public static String getNetworkOperatorName() { TelephonyManager tm = (TelephonyManager) Utils.getContext().getSystemService(Context.TELEPHONY_SERVICE); return tm != null ? tm.getNetworkOperatorName() : null; } 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; /** * 获取当前网络类型 * <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p> * * @return 网络类型 * <ul> * <li>{@link NetworkUtils.NetworkType#NETWORK_WIFI } </li> * <li>{@link NetworkUtils.NetworkType#NETWORK_4G } </li> * <li>{@link NetworkUtils.NetworkType#NETWORK_3G } </li> * <li>{@link NetworkUtils.NetworkType#NETWORK_2G } </li> * <li>{@link NetworkUtils.NetworkType#NETWORK_UNKNOWN} </li> * <li>{@link NetworkUtils.NetworkType#NETWORK_NO } </li> * </ul> */ public static NetworkType getNetworkType() { NetworkType netType = NetworkType.NETWORK_NO; NetworkInfo info = getActiveNetworkInfo(); if (info != null && info.isAvailable()) { if (info.getType() == ConnectivityManager.TYPE_WIFI) { netType = NetworkType.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 = NetworkType.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 = NetworkType.NETWORK_3G; break; case NETWORK_TYPE_IWLAN: case TelephonyManager.NETWORK_TYPE_LTE: netType = NetworkType.NETWORK_4G; break; default: String subtypeName = info.getSubtypeName(); if (subtypeName.equalsIgnoreCase("TD-SCDMA") || subtypeName.equalsIgnoreCase("WCDMA") || subtypeName.equalsIgnoreCase("CDMA2000")) { netType = NetworkType.NETWORK_3G; } else { netType = NetworkType.NETWORK_UNKNOWN; } break; } } else { netType = NetworkType.NETWORK_UNKNOWN; } } return netType; } /** * 获取IP地址 * <p>需添加权限 {@code <uses-permission android:name="android.permission.INTERNET"/>}</p> * * @param useIPv4 是否用IPv4 * @return IP地址 */ public static String getIPAddress(boolean useIPv4) { try { for (Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces(); nis.hasMoreElements(); ) { NetworkInterface ni = nis.nextElement(); // 防止小米手机返回10.0.2.15 if (!ni.isUp()) continue; for (Enumeration<InetAddress> addresses = ni.getInetAddresses(); addresses.hasMoreElements(); ) { InetAddress inetAddress = addresses.nextElement(); if (!inetAddress.isLoopbackAddress()) { String hostAddress = inetAddress.getHostAddress(); boolean isIPv4 = hostAddress.indexOf(':') < 0; if (useIPv4) { if (isIPv4) return hostAddress; } else { if (!isIPv4) { int index = hostAddress.indexOf('%'); return index < 0 ? hostAddress.toUpperCase() : hostAddress.substring(0, index).toUpperCase(); } } } } } } catch (SocketException e) { e.printStackTrace(); } return null; } /** * 获取域名ip地址 * <p>需添加权限 {@code <uses-permission android:name="android.permission.INTERNET"/>}</p> * * @param domain 域名 * @return ip地址 */ public static String getDomainAddress(final String domain) { try { ExecutorService exec = Executors.newCachedThreadPool(); Future<String> fs = exec.submit(new Callable<String>() { @Override public String call() throws Exception { InetAddress inetAddress; try { inetAddress = InetAddress.getByName(domain); return inetAddress.getHostAddress(); } catch (UnknownHostException e) { e.printStackTrace(); } return null; } }); return fs.get(); } catch (InterruptedException | ExecutionException e) { e.printStackTrace(); } return null; } }
终点站
好了,终点站到了,如果对本次旅途满意的话,请给五星好评哦,没关注的小伙伴轻轻点个上方的关注,毕竟老司机牺牲了很多时间才换来这么一份工具类,如果该工具类依赖其他工具类,都可以在我的Android开发人员不得不收集的代码(持续更新中)中找到。
作者:Blankj
链接:https://www.jianshu.com/p/fa877daf7406
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