本篇主要講的是如何擷取網絡類型和營運商名稱。
下面是主要内容：
- NetUtils 工具類
- 添權重限
- 具體使用
1.NetUtils工具類（複制既可用）
import android.annotation.SuppressLint;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;
/**
* author: wu
* date: on 2018/11/20.
* describe:擷取網絡狀态
*/
public class NetUtils {
public static final int NETWORK_NONE = 0; // 沒有網絡連接配接
public static final int NETWORK_WIFI = 1; // wifi連接配接
public static final int NETWORK_2G = 2; // 2G
public static final int NETWORK_3G = 3; // 3G
public static final int NETWORK_4G = 4; // 4G
public static final int NETWORK_MOBILE = 5; // 手機流量
/**
* 擷取營運商名字
* @return int
*/
public static String getOperatorName(Context context) {
/*
* getSimOperatorName()就可以直接擷取到營運商的名字
* 也可以使用IMSI擷取，getSimOperator()，然後根據傳回值判斷，例如"46000"為移動
* IMSI相關連結：http://baike.baidu.com/item/imsi
*/
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
// getSimOperatorName就可以直接擷取到營運商的名字
return telephonyManager.getSimOperatorName();
}
/**
* 擷取目前網絡連接配接的類型
* @return int
*/
public static int getNetworkState(Context context) {
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); // 擷取網絡服務
if (null == connManager) { // 為空則認為無網絡
return NETWORK_NONE;
}
// 擷取網絡類型，如果為空，傳回無網絡
@SuppressLint("MissingPermission") NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo();
if (activeNetInfo == null || !activeNetInfo.isAvailable()) {
return NETWORK_NONE;
}
// 判斷是否為WIFI
@SuppressLint("MissingPermission") NetworkInfo wifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (null != wifiInfo) {
NetworkInfo.State state = wifiInfo.getState();
if (null != state) {
if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
return NETWORK_WIFI;
}
}
}
// 若不是WIFI，則去判斷是2G、3G、4G網
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
int networkType = telephonyManager.getNetworkType();
switch (networkType) {
/*
GPRS : 2G(2.5) General Packet Radia Service 114kbps
EDGE : 2G(2.75G) Enhanced Data Rate for GSM Evolution 384kbps
UMTS : 3G WCDMA 聯通3G Universal Mobile Telecommunication System 完整的3G移動通信技術标準
CDMA : 2G 電信 Code Division Multiple Access 碼分多址
EVDO_0 : 3G (EVDO 全程 CDMA2000 1xEV-DO) Evolution - Data Only (Data Optimized) 153.6kps - 2.4mbps 屬于3G
EVDO_A : 3G 1.8mbps - 3.1mbps 屬于3G過渡，3.5G
1xRTT : 2G CDMA2000 1xRTT (RTT - 無線電傳輸技術) 144kbps 2G的過渡,
HSDPA : 3.5G 高速下行分組接入 3.5G WCDMA High Speed Downlink Packet Access 14.4mbps
HSUPA : 3.5G High Speed Uplink Packet Access 高速上行鍊路分組接入 1.4 - 5.8 mbps
HSPA : 3G (分HSDPA,HSUPA) High Speed Packet Access
IDEN : 2G Integrated Dispatch Enhanced Networks 內建數字增強型網絡 （屬于2G，來自維基百科）
EVDO_B : 3G EV-DO Rev.B 14.7Mbps 下行 3.5G
LTE : 4G Long Term Evolution FDD-LTE 和 TDD-LTE , 3G過渡，更新版 LTE Advanced 才是4G
EHRPD : 3G CDMA2000向LTE 4G的中間産物 Evolved High Rate Packet Data HRPD的更新
HSPAP : 3G HSPAP 比 HSDPA 快些
*/
// 2G網絡
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:
return NETWORK_2G;
// 3G網絡
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:
return NETWORK_3G;
// 4G網絡
case TelephonyManager.NETWORK_TYPE_LTE:
return NETWORK_4G;
default:
return NETWORK_MOBILE;
}
}
/**
* 判斷網絡是否連接配接
* @return true/false
*/
public static boolean isNetConnected(Context context) {
ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
@SuppressLint("MissingPermission") NetworkInfo info = connectivity.getActiveNetworkInfo();
if (info != null && info.isConnected()) {
if (info.getState() == NetworkInfo.State.CONNECTED) {
return true;
}
}
}
return false;
}
/**
* 判斷是否wifi連接配接
* @return true/false
*/
public static synchronized boolean isWifiConnected(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivityManager != null) {
@SuppressLint("MissingPermission") NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if (networkInfo != null) {
int networkInfoType = networkInfo.getType();
if (networkInfoType == ConnectivityManager.TYPE_WIFI || networkInfoType == ConnectivityManager.TYPE_ETHERNET) {
return networkInfo.isConnected();
}
}
}
return false;
}
}
2. 添權重限
不要忘記添權重限：
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
3. 具體使用
下面是我在 Activity 中使用方法，擷取營運商名稱，是否有網絡，網絡類型等：
private String operatorName;//營運商名字
private int netWorkState;//網絡為：2G、3G、4G
private boolean netConnected;//是否有網絡
private boolean wifiConnected;//網絡是否為wifi
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
operatorName = NetUtils.getOperatorName(this);
netWorkState = NetUtils.getNetworkState(this);
netConnected = NetUtils.isNetConnected(this);
wifiConnected = NetUtils.isWifiConnected(this);
Log.e("==營運商名字", operatorName+"");
Log.e("==網絡為", netWorkState+"");
Log.e("==是否有網絡", netConnected+"");
Log.e("==網絡是否為wifi", wifiConnected+"");
}
下面是運作之後的列印結果：
可以看出，我的手機有網絡，是 wifi 連接配接。
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