android设备唯一码的获取之二
此篇文章对比android设备唯一码的获取之一看比较好，地址
http://blog.csdn.net/fastthinking/article/details/18001967
如何确定一个android设备？
TelephonyManager tm = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
String deviceid = tm.getDeviceId();
if(deviceid == null || deviceid.length==0){
<span style="white-space:pre"> </span>WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
<span style="white-space:pre"> </span>if (manager != null) {
<span style="white-space:pre"> </span>deviceid = manager.getConnectionInfo().getMacAddress();
<span style="white-space:pre"> </span>}
}
Android 中的几中方法，使用中常常不可靠
1. DEVICE_ID
假设我们确实需要用到真实设备的标识，可能就需要用到DEVICE_ID。通过 TelephonyManager.getDeviceId()获取，它根据不同的手机设备返回IMEI，MEID或者ESN码.
缺点：在少数的一些设备上，该实现有漏洞，会返回垃圾数据
2. MAC ADDRESS
我们也可以通过Wifi获取MAC ADDRESS作为DEVICE ID
WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (manager != null) {
String MacAddress = manager.getConnectionInfo().getMacAddress();
Log.i(tag, "MacAddress is " + MacAddress);
}
如果Wifi关闭的时候，硬件设备可能不能返回MAC ADDRESS。经 测试，某些定制平板在wifi开关关闭的时候确实返回不了mac地址。另外使用一个无电话功能的台电a10四核pad和小米1s联通版。
3. Serial Number
A hardware serial number, if available. Alphanumeric only, case-insensitive.
android.os.Build.SERIAL 直接读取缺点：在少数的一些设备上，会返回垃圾数据
4. ANDROID_ID
ANDROID_ID是设备第一次启动时产生和存储的64bit的一个数，
缺点：当设备被wipe后该数改变, 不适用。
5.android 底层是 Linux，我们用Linux的方法来获取：
1 cpu号：
文件在： /proc/cpuinfo
通过Adb shell 查看：
adb shell cat /proc/cpuinfo
2 mac 地址
文件路径 /sys/class/net/wlan0/address
adb shell cat /sys/class/net/wlan0/address
xx:xx:xx:xx:xx:aa
如果Wifi关闭的时候，硬件设备不能返回MAC ADDRESS.测试使用一个无电话功能的台电a10四核pad和小米1s联通版
在wifi打开的时候获取的mac地址同方法2地址相同。
获取MAC 地址代码
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TelephonyManager tm = (TelephonyManager) this
.getSystemService(Context.TELEPHONY_SERVICE);
String simSerialNumber = tm.getSimSerialNumber();
Log.i(tag, "simSerialNumber is " + simSerialNumber);
String deviceid = tm.getDeviceId();
Log.i(tag, "DeviceId is " + deviceid);
String SubscriberId = tm.getSubscriberId();
Log.i(tag, "SubscriberId is " + SubscriberId);
String Line1Number = tm.getLine1Number();
Log.i(tag, "Line1Number is " + Line1Number);
String ANDROID_ID = Secure.getString(getContentResolver(),
Secure.ANDROID_ID);
Log.i(tag, "ANDROID_ID is " + ANDROID_ID);
Log.i(tag, "android.os.Build.SERIAL is " + android.os.Build.SERIAL);
WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (manager != null) {
String MacAddress = manager.getConnectionInfo().getMacAddress();
Log.i(tag, "MacAddress is " + MacAddress);
}
Log.i(tag, "macSerial getted by linux is " + getMac());
}
private String getMac() {
String macSerial = null;
String str = "";
Process pp = null;
try {
<span style="white-space:pre"> </span>pp = Runtime.getRuntime().exec(
<span style="white-space:pre"> </span>"cat /sys/class/net/wlan0/address ");
<span style="white-space:pre"> </span>InputStreamReader ir = new InputStreamReader(pp.getInputStream());
<span style="white-space:pre"> </span>LineNumberReader input = new LineNumberReader(ir);
<span style="white-space:pre"> </span>for (; null != str;) {
<span style="white-space:pre"> </span>str = input.readLine();
<span style="white-space:pre"> </span>if (str != null) {
<span style="white-space:pre"> </span>macSerial = str.trim();// 去空格
<span style="white-space:pre"> </span>break;
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>} catch (IOException ex) {
<span style="white-space:pre"> </span>// 赋予默认值
<span style="white-space:pre"> </span>ex.printStackTrace();
<span style="white-space:pre"> </span>}finally {
<span style="white-space:pre"> </span>if(pp!=null){
<span style="white-space:pre"> </span>pp.destroy();
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>return macSerial;
<span style="white-space:pre"> </span>
<span style="white-space:pre"> </span>}台电a10 4核平板 打开wifi
07-29 14:43:06.880: I/MainActivity(21404): DeviceId is 3588170056-------
07-29 14:43:06.880: I/MainActivity(21404): SubscriberId is
07-29 14:43:06.880: I/MainActivity(21404): Line1Number is
07-29 14:43:06.880: I/MainActivity(21404): ANDROID_ID is c76ec70cf84-------
07-29 14:43:06.880: I/MainActivity(21404): android.os.Build.SERIAL is unknown
07-29 14:43:06.890: I/MainActivity(21404): MacAddress is 00:7d:0e:0-------
07-29 14:43:06.920: I/MainActivity(21404): macSerial getted by linux is 00:7d:0e:03:c6:e6
台电a10 4核平板 关闭wifi
07-29 14:45:25.340: I/MainActivity(21404): macSerial getted by linux is null
小米1s 打开wifi
07-29 14:46:35.934: I/MainActivity(10172): simSerialNumber is 898601128---------
07-29 14:46:35.934: I/MainActivity(10172): DeviceId is 8630920---------
07-29 14:46:35.934: I/MainActivity(10172): SubscriberId is 4600191---------
07-29 14:46:35.944: I/MainActivity(10172): Line1Number is +86156---------
07-29 14:46:35.944: I/MainActivity(10172): ANDROID_ID is fa7ae33b---------
07-29 14:46:35.944: I/MainActivity(10172): android.os.Build.SERIAL is 341---------
07-29 14:46:35.954: I/MainActivity(10172): MacAddress is d4:97:0b---------
07-29 14:43:06.920: I/MainActivity(21404): macSerial getted by linux is 00:7d:0-------
小米1s 关闭wifi
07-29 14:46:35.994: I/MainActivity(10172): macSerial getted by linux is null