網(wǎng)絡(luò)工具類(lèi)NetworkUtils
提供的方法：
打開(kāi)網(wǎng)絡(luò)設(shè)置界面 openWirelessSettings
判斷網(wǎng)絡(luò)是否可用 isAvailable
判斷網(wǎng)絡(luò)是否連接 isConnected
判斷網(wǎng)絡(luò)是否是4G is4G
判斷wifi是否連接狀態(tài) isWifiConnected
獲取移動(dòng)網(wǎng)絡(luò)運(yùn)營(yíng)商名稱 getNetworkOperatorName
獲取移動(dòng)終端類(lèi)型 getPhoneType
獲取當(dāng)前的網(wǎng)絡(luò)類(lèi)型(WIFI,2G,3G,4G) getNetWorkType、getNetWorkTypeName
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;
/**
* 網(wǎng)絡(luò)工具類(lèi)
*/
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(kāi)網(wǎng)絡(luò)設(shè)置界面
* <p>3.0以下打開(kāi)設(shè)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(dòng)網(wǎng)絡(luò)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(wǎng)絡(luò)是否可用
* <p>需添加權(quán)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(wǎng)絡(luò)是否連接
* <p>需添加權(quán)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(wǎng)絡(luò)是否是4G
* <p>需添加權(quán)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(tài)
* <p>需添加權(quán)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(dòng)網(wǎng)絡(luò)運(yùn)營(yíng)商名稱
* <p>如中國(guó)聯(lián)通、中國(guó)移動(dòng)、中國(guó)電信</p>
*
* @param context 上下文
* @return 移動(dòng)網(wǎng)絡(luò)運(yùn)營(yíng)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(dòng)終端類(lèi)型
*
* @param context 上下文
* @return 手機(jī)制式
* <ul>
* <li>{@link TelephonyManager#PHONE_TYPE_NONE } : 0 手機(jī)制式未知</li>
* <li>{@link TelephonyManager#PHONE_TYPE_GSM } : 1 手機(jī)制式為GSM，移動(dòng)和聯(lián)通</li>
* <li>{@link TelephonyManager#PHONE_TYPE_CDMA } : 2 手機(jī)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(dāng)前的網(wǎng)絡(luò)類(lèi)型(WIFI,2G,3G,4G)
* <p>需添加權(quán)限 {@code <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>}</p>
*
* @param context 上下文
* @return 網(wǎng)絡(luò)類(lèi)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(dāng)前的網(wǎng)絡(luò)類(lèi)型(WIFI,2G,3G,4G)
* <p>依賴上面的方法</p>
*
* @param context 上下文
* @return 網(wǎng)絡(luò)類(lèi)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";
}
}
}
