NetUtil.java
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package com.prws.common.utils;
import android.content.Context;
import android.net.wifi.WifiManager;
import android.util.Log;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Collections;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
public class NetUtil {
private NetUtil(){}
public static boolean isEthConnect(){
return hasDisplay("eth");
}
public static boolean isWifiConnect(){
return hasDisplay("wlan");
}
public static boolean is4GConnect(){
return hasDisplay("usb");
}
private static boolean hasDisplay(String displayName){
try {
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
String displayNameStr = intf.getDisplayName();
if(displayNameStr.contains(displayName)){
List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
for (InetAddress addr : addrs) {
if (!addr.isLoopbackAddress()) {
String sAddr = addr.getHostAddress();
boolean isIPv4 = sAddr.indexOf(':')<0;
if(isIPv4){
return true; //检查到设备并且有设备ipv4的地址信息
}
}
}
}else{
continue;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
public static boolean isWifiDisabled(Context context){
try{
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
return wifiManager.getWifiState()==WifiManager.WIFI_STATE_DISABLED;
}catch (Exception e){
e.printStackTrace();
}
return false;
}
public static void closeWifi(Context context,WifiChangeCallback callback){
try{
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
if(wifiManager.getWifiState()== WifiManager.WIFI_STATE_ENABLED){//wifi打开
wifiManager.setWifiEnabled(false);
Timer timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
if(wifiManager.getWifiState()== WifiManager.WIFI_STATE_DISABLED){
callback.onWifiClosed();
timer.cancel();
}
}
},0,500);
}
}catch (Exception e){
e.printStackTrace();
}
}
public static void openWifi(Context context){
try{
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
if(wifiManager.getWifiState()== WifiManager.WIFI_STATE_DISABLED){//wifi打开
wifiManager.setWifiEnabled(true);
}
}catch (Exception e){
e.printStackTrace();
}
}
public interface WifiChangeCallback{
public void onWifiClosed();
public void onWifiOpened();
}
public static void printNetInfo(){
try {
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
for (InetAddress addr : addrs) {
if (!addr.isLoopbackAddress()) {
String sAddr = addr.getHostAddress();
Log.e("printNetInfo", "printNetInfo: "+sAddr );
}
}
}
} catch (Exception ex) { }
}
}