package com.moral.andbrickslib.utils;
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import android.content.Context;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.telephony.TelephonyManager;
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import android.util.Log;
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import java.lang.reflect.Method;
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/**
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* assist us in sensing state of the networks.
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*
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* need <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
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*
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* 半夜了，研究了一下Android的Network方面，发现网上有些文章理解的是不对的。
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* 以下方法是我研究得出的结论和方法，如有误也感谢指出。
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*
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* @author MaTianyu
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* 2014-1-8上午 00:33:11
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*/
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public class NetworkUtil {
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private static final String TAG = NetworkUtil.class.getSimpleName();
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public enum NetType {
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None(1),
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Mobile(2),
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Wifi(4),
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Other(8);
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NetType(int value) {
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this.value = value;
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}
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public int value;
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}
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public enum NetWorkType {
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UnKnown(-1),
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Wifi(1),
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Net2G(2),
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Net3G(3),
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Net4G(4);
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NetWorkType(int value) {
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this.value = value;
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}
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public int value;
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}
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/**
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* 获取ConnectivityManager
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*/
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public static ConnectivityManager getConnectivityManager(Context context) {
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return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
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}
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/**
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* 获取ConnectivityManager
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*/
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public static TelephonyManager getTelephonyManager(Context context) {
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return (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
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}
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/**
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* 判断网络连接是否有效（此时可传输数据）。
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*
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* @return boolean 不管wifi，还是mobile net，只有当前在连接状态（可有效传输数据）才返回true,反之false。
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*/
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public static boolean isConnected(Context context) {
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NetworkInfo net = getConnectivityManager(context).getActiveNetworkInfo();
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return net != null && net.isConnected();
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}
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/**
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* 判断有无网络正在连接中（查找网络、校验、获取IP等）。
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*
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* @return boolean 不管wifi，还是mobile net，只有当前在连接状态（可有效传输数据）才返回true,反之false。
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*/
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public static boolean isConnectedOrConnecting(Context context) {
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NetworkInfo[] nets = getConnectivityManager(context).getAllNetworkInfo();
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if (nets != null) {
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for (NetworkInfo net : nets) {
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if (net.isConnectedOrConnecting()) { return true; }
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}
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}
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return false;
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}
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public static NetType getConnectedType(Context context) {
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NetworkInfo net = getConnectivityManager(context).getActiveNetworkInfo();
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if (net != null) {
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switch (net.getType()) {
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case ConnectivityManager.TYPE_WIFI:
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return NetType.Wifi;
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case ConnectivityManager.TYPE_MOBILE:
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return NetType.Mobile;
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default:
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return NetType.Other;
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}
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}
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return NetType.None;
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}
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/**
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* 是否存在有效的WIFI连接
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*/
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public static boolean isWifiConnected(Context context) {
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NetworkInfo net = getConnectivityManager(context).getActiveNetworkInfo();
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return net != null && net.getType() == ConnectivityManager.TYPE_WIFI && net.isConnected();
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}
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/**
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* 是否存在有效的移动连接
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*
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* @return boolean
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*/
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public static boolean isMobileConnected(Context context) {
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NetworkInfo net = getConnectivityManager(context).getActiveNetworkInfo();
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return net != null && net.getType() == ConnectivityManager.TYPE_MOBILE && net.isConnected();
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}
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/**
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* 检测网络是否为可用状态
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*/
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public static boolean isAvailable(Context context) {
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return isWifiAvailable(context) || (isMobileAvailable(context) && isMobileEnabled(context));
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}
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/**
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* 判断是否有可用状态的Wifi，以下情况返回false：
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* 1. 设备wifi开关关掉;
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* 2. 已经打开飞行模式；
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* 3. 设备所在区域没有信号覆盖；
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* 4. 设备在漫游区域，且关闭了网络漫游。
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*
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* @return boolean wifi为可用状态（不一定成功连接，即Connected）即返回ture
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*/
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public static boolean isWifiAvailable(Context context) {
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NetworkInfo[] nets = getConnectivityManager(context).getAllNetworkInfo();
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if (nets != null) {
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for (NetworkInfo net : nets) {
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if (net.getType() == ConnectivityManager.TYPE_WIFI) { return net.isAvailable(); }
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}
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}
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return false;
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}
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/**
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* 判断有无可用状态的移动网络，注意关掉设备移动网络直接不影响此函数。
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* 也就是即使关掉移动网络，那么移动网络也可能是可用的(彩信等服务)，即返回true。
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* 以下情况它是不可用的，将返回false：
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* 1. 设备打开飞行模式；
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* 2. 设备所在区域没有信号覆盖；
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* 3. 设备在漫游区域，且关闭了网络漫游。
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*
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* @return boolean
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*/
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public static boolean isMobileAvailable(Context context) {
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NetworkInfo[] nets = getConnectivityManager(context).getAllNetworkInfo();
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if (nets != null) {
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for (NetworkInfo net : nets) {
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if (net.getType() == ConnectivityManager.TYPE_MOBILE) { return net.isAvailable(); }
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}
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}
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return false;
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}
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/**
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* 设备是否打开移动网络开关
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*
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* @return boolean 打开移动网络返回true，反之false
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*/
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public static boolean isMobileEnabled(Context context) {
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try {
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Method getMobileDataEnabledMethod = ConnectivityManager.class.getDeclaredMethod("getMobileDataEnabled");
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getMobileDataEnabledMethod.setAccessible(true);
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return (Boolean) getMobileDataEnabledMethod.invoke(getConnectivityManager(context));
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} catch (Exception e) {
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e.printStackTrace();
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}
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// 反射失败，默认开启
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return true;
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}
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/**
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* 打印当前各种网络状态
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*
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* @return boolean
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*/
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public static boolean printNetworkInfo(Context context) {
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ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
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if (connectivity != null) {
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NetworkInfo in = connectivity.getActiveNetworkInfo();
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Log.i(TAG, "-------------$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$-------------");
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Log.i(TAG, "getActiveNetworkInfo: " + in);
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NetworkInfo[] info = connectivity.getAllNetworkInfo();
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if (info != null) {
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for (int i = 0; i < info.length; i++) {
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// if (info[i].getType() == ConnectivityManager.TYPE_WIFI) {
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Log.i(TAG, "NetworkInfo[" + i + "]isAvailable : " + info[i].isAvailable());
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Log.i(TAG, "NetworkInfo[" + i + "]isConnected : " + info[i].isConnected());
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Log.i(TAG, "NetworkInfo[" + i + "]isConnectedOrConnecting : " + info[i].isConnectedOrConnecting());
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Log.i(TAG, "NetworkInfo[" + i + "]: " + info[i]);
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// }
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}
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Log.i(TAG, "\n");
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} else {
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Log.i(TAG, "getAllNetworkInfo is null");
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}
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}
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return false;
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}
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/**
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* get connected network type by {@link ConnectivityManager}
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*
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* such as WIFI, MOBILE, ETHERNET, BLUETOOTH, etc.
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*
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* @return {@link ConnectivityManager#TYPE_WIFI}, {@link ConnectivityManager#TYPE_MOBILE},
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* {@link ConnectivityManager#TYPE_ETHERNET}...
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*/
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public static int getConnectedTypeINT(Context context) {
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NetworkInfo net = getConnectivityManager(context).getActiveNetworkInfo();
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if (net != null) {
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Log.i(TAG, "NetworkInfo: " + net.toString());
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return net.getType();
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}
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return -1;
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}
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/**
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* get network type by {@link TelephonyManager}
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*
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* such as 2G, 3G, 4G, etc.
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*
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* @return {@link TelephonyManager#NETWORK_TYPE_CDMA}, {@link TelephonyManager#NETWORK_TYPE_GPRS},
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* {@link TelephonyManager#NETWORK_TYPE_LTE}...
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*/
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public static int getTelNetworkTypeINT(Context context) {
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return getTelephonyManager(context).getNetworkType();
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}
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/**
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* GPRS 2G(2.5) General Packet Radia Service 114kbps
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* EDGE 2G(2.75G) Enhanced Data Rate for GSM Evolution 384kbps
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* UMTS 3G WCDMA 联通3G Universal Mobile Telecommunication System 完整的3G移动通信技术标准
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* CDMA 2G 电信 Code Division Multiple Access 码分多址
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* EVDO_0 3G (EVDO 全程 CDMA2000 1xEV-DO) Evolution - Data Only (Data Optimized) 153.6kps - 2.4mbps 属于3G
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* EVDO_A 3G 1.8mbps - 3.1mbps 属于3G过渡，3.5G
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* 1xRTT 2G CDMA2000 1xRTT (RTT - 无线电传输技术) 144kbps 2G的过渡,
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* HSDPA 3.5G 高速下行分组接入 3.5G WCDMA High Speed Downlink Packet Access 14.4mbps
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* HSUPA 3.5G High Speed Uplink Packet Access 高速上行链路分组接入 1.4 - 5.8 mbps
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* HSPA 3G (分HSDPA,HSUPA) High Speed Packet Access
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* IDEN 2G Integrated Dispatch Enhanced Networks 集成数字增强型网络 （属于2G，来自维基百科）
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* EVDO_B 3G EV-DO Rev.B 14.7Mbps 下行 3.5G
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* LTE 4G Long Term Evolution FDD-LTE 和 TDD-LTE , 3G过渡，升级版 LTE Advanced 才是4G
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* EHRPD 3G CDMA2000向LTE 4G的中间产物 Evolved High Rate Packet Data HRPD的升级
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* HSPAP 3G HSPAP 比 HSDPA 快些
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*
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* @return {@link NetWorkType}
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*/
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public static NetWorkType getNetworkType(Context context) {
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int type = getConnectedTypeINT(context);
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switch (type) {
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case ConnectivityManager.TYPE_WIFI:
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return NetWorkType.Wifi;
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case ConnectivityManager.TYPE_MOBILE:
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case ConnectivityManager.TYPE_MOBILE_DUN:
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case ConnectivityManager.TYPE_MOBILE_HIPRI:
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case ConnectivityManager.TYPE_MOBILE_MMS:
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case ConnectivityManager.TYPE_MOBILE_SUPL:
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int teleType = getTelephonyManager(context).getNetworkType();
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switch (teleType) {
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case TelephonyManager.NETWORK_TYPE_GPRS:
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case TelephonyManager.NETWORK_TYPE_EDGE:
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case TelephonyManager.NETWORK_TYPE_CDMA:
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case TelephonyManager.NETWORK_TYPE_1xRTT:
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case TelephonyManager.NETWORK_TYPE_IDEN:
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return NetWorkType.Net2G;
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case TelephonyManager.NETWORK_TYPE_UMTS:
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case TelephonyManager.NETWORK_TYPE_EVDO_0:
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case TelephonyManager.NETWORK_TYPE_EVDO_A:
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case TelephonyManager.NETWORK_TYPE_HSDPA:
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case TelephonyManager.NETWORK_TYPE_HSUPA:
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case TelephonyManager.NETWORK_TYPE_HSPA:
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case TelephonyManager.NETWORK_TYPE_EVDO_B:
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case TelephonyManager.NETWORK_TYPE_EHRPD:
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case TelephonyManager.NETWORK_TYPE_HSPAP:
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return NetWorkType.Net3G;
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case TelephonyManager.NETWORK_TYPE_LTE:
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return NetWorkType.Net4G;
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default:
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return NetWorkType.UnKnown;
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}
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default:
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return NetWorkType.UnKnown;
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}
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}
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}
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