69 lines
2.1 KiB
Java
69 lines
2.1 KiB
Java
package com.adjust.sdk;
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import android.content.Context;
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import android.net.wifi.WifiManager;
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import android.text.TextUtils;
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import java.io.BufferedReader;
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import java.io.FileReader;
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import java.io.IOException;
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import java.util.Locale;
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public class MacAddressUtil {
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public static String getMacAddress(Context context) {
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String rawMacAddress = getRawMacAddress(context);
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if (rawMacAddress == null) {
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return null;
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}
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return removeSpaceString(rawMacAddress.toUpperCase(Locale.US));
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}
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private static String getRawMacAddress(Context context) {
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String loadAddress = loadAddress("wlan0");
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if (loadAddress != null) {
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return loadAddress;
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}
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String loadAddress2 = loadAddress("eth0");
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if (loadAddress2 != null) {
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return loadAddress2;
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}
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try {
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String macAddress = ((WifiManager) context.getSystemService("wifi")).getConnectionInfo().getMacAddress();
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if (macAddress != null) {
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return macAddress;
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}
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return null;
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} catch (Exception unused) {
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return null;
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}
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}
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private static String loadAddress(String str) {
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try {
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StringBuilder sb = new StringBuilder(1000);
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BufferedReader bufferedReader = new BufferedReader(new FileReader("/sys/class/net/" + str + "/address"), 1024);
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char[] cArr = new char[1024];
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while (true) {
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int read = bufferedReader.read(cArr);
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if (read != -1) {
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sb.append(String.valueOf(cArr, 0, read));
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} else {
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bufferedReader.close();
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return sb.toString();
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}
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}
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} catch (IOException unused) {
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return null;
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}
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}
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private static String removeSpaceString(String str) {
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if (str == null) {
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return null;
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}
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String replaceAll = str.replaceAll("\\s", "");
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if (TextUtils.isEmpty(replaceAll)) {
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return null;
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}
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return replaceAll;
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}
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}
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