Android應(yīng)用中是如何判斷網(wǎng)絡(luò)狀態(tài)的?針對(duì)這個(gè)問題,這篇文章詳細(xì)介紹了相對(duì)應(yīng)的分析和解答,希望可以幫助更多想解決這個(gè)問題的小伙伴找到更簡(jiǎn)單易行的方法。
成都創(chuàng)新互聯(lián)始終堅(jiān)持【策劃先行,效果至上】的經(jīng)營(yíng)理念,通過多達(dá)十多年累計(jì)超上千家客戶的網(wǎng)站建設(shè)總結(jié)了一套系統(tǒng)有效的推廣解決方案,現(xiàn)已廣泛運(yùn)用于各行各業(yè)的客戶,其中包括:履帶攪拌車等企業(yè),備受客戶稱揚(yáng)。
實(shí)例代碼
package com.example.android; import java.io.IOException; import java.net.HttpURLConnection; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.net.URL; import java.util.Enumeration; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.telephony.TelephonyManager; public class NetStatus { public static int NET_CNNT_BAIDU_OK = 1; // 正常訪問因特網(wǎng)狀態(tài) public static int NET_CNNT_BAIDU_TIMEOUT = 2; // 無(wú)法訪問因特網(wǎng)狀態(tài) public static int NET_NOT_PREPARE = 3; // 網(wǎng)絡(luò)未準(zhǔn)備好 public static int NET_ERROR = 4; private static int TIMEOUT = 3000; /** * 返回當(dāng)前網(wǎng)絡(luò)狀態(tài) * * @param context * @return */ public static int getNetState(Context context) { try { ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity != null) { NetworkInfo networkinfo = connectivity.getActiveNetworkInfo(); if (networkinfo != null) { if (networkinfo.isAvailable() && networkinfo.isConnected()) { if (!connectionNetwork()) return NET_CNNT_BAIDU_TIMEOUT; else return NET_CNNT_BAIDU_OK; } else { return NET_NOT_PREPARE; } } } } catch (Exception e) { } return NET_ERROR; } /** * 拼百度地址 * * @return */ private static boolean connectionNetwork() { boolean result = false; HttpURLConnection httpUrl = null; try { httpUrl = (HttpURLConnection) new URL("http://www.baidu.com").openConnection(); httpUrl.setConnectTimeout(TIMEOUT); httpUrl.connect(); result = true; } catch (IOException e) { } finally { if (null != httpUrl) { httpUrl.disconnect(); } httpUrl = null; } return result; } /** * 判斷當(dāng)前網(wǎng)絡(luò)是否是3G網(wǎng)絡(luò) * * @param context * @return boolean */ public static boolean is3G(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) { return true; } return false; } /** * 判斷當(dāng)前網(wǎng)絡(luò)是否是wifi網(wǎng)絡(luò) * * @param context * @return boolean */ public static boolean isWifi(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) { return true; } return false; } /** * 判斷當(dāng)前網(wǎng)絡(luò)是否是2G網(wǎng)絡(luò) * * @param context * @return boolean */ public static boolean is2G(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetInfo != null && (activeNetInfo.getSubtype() == TelephonyManager.NETWORK_TYPE_EDGE || activeNetInfo.getSubtype() == TelephonyManager.NETWORK_TYPE_GPRS || activeNetInfo.getSubtype() == TelephonyManager.NETWORK_TYPE_CDMA)) { return true; } return false; } /** * wifi是否打開 */ public static boolean isWifiEnabled(Context context) { ConnectivityManager mgrConn = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); TelephonyManager mgrTel = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return ((mgrConn.getActiveNetworkInfo() != null && mgrConn.getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel.getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS); } /** * 獲得本機(jī)ip地址 * * @return */ public static String GetHostIp() { try { for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> ipAddr = intf.getInetAddresses(); ipAddr.hasMoreElements();) { InetAddress inetAddress = ipAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { return inetAddress.getHostAddress(); } } } } catch (SocketException ex) { } catch (Exception e) { } return null; } /** * 獲取本機(jī)串號(hào)imei * * @param context * @return */ public static String getIMEI(Context context) { TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return telephonyManager.getDeviceId(); } }
添加權(quán)限:訪問網(wǎng)絡(luò)權(quán)限
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.INTERNET"/>
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