浅谈android获取设备唯一标识完美解决方案

/**
 * deviceID的组成为：渠道标志+识别符来源标志+hash后的终端识别符 
 * 
 * 渠道标志为： 
 * 1，andriod（a） 
 * 
 * 识别符来源标志： 
 * 1， wifi mac地址（wifi）； 
 * 2， IMEI（imei）； 
 * 3， 序列号（sn）； 
 * 4， id：随机码。若前面的都取不到时，则随机生成一个随机码，需要缓存。 
 * 
 * @param context 
 * @return 
 */ 
public static String getDeviceId(Context context) { 
 StringBuilder deviceId = new StringBuilder(); 
 // 渠道标志 
 deviceId.append("a"); 
 try { 
  //wifi mac地址 
  WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); 
  WifiInfo info = wifi.getConnectionInfo(); 
  String wifiMac = info.getMacAddress(); 
  if(!isEmpty(wifiMac)){ 
   deviceId.append("wifi"); 
   deviceId.append(wifiMac); 
   PALog.e("getDeviceId : ", deviceId.toString()); 
   return deviceId.toString(); 
  } 
  //IMEI（imei） 
  TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); 
  String imei = tm.getDeviceId(); 
  if(!isEmpty(imei)){ 
   deviceId.append("imei"); 
   deviceId.append(imei); 
   PALog.e("getDeviceId : ", deviceId.toString()); 
   return deviceId.toString(); 
  } 
  //序列号（sn） 
  String sn = tm.getSimSerialNumber(); 
  if(!isEmpty(sn)){ 
   deviceId.append("sn"); 
   deviceId.append(sn); 
   PALog.e("getDeviceId : ", deviceId.toString()); 
   return deviceId.toString(); 
  } 
  //如果上面都没有， 则生成一个id：随机码 
  String uuid = getUUID(context); 
  if(!isEmpty(uuid)){ 
   deviceId.append("id"); 
   deviceId.append(uuid); 
   PALog.e("getDeviceId : ", deviceId.toString()); 
   return deviceId.toString(); 
  } 
 } catch (Exception e) { 
  e.printStackTrace(); 
  deviceId.append("id").append(getUUID(context)); 
 } 
 PALog.e("getDeviceId : ", deviceId.toString()); 
 return deviceId.toString(); 
} 
/** 
 * 得到全局唯一UUID 
 */ 
public static String getUUID(Context context){ 
 SharedPreferences mShare = getSysShare(context, "sysCacheMap"); 
 if(mShare != null){ 
  uuid = mShare.getString("uuid", ""); 
 } 
 if(isEmpty(uuid)){ 
  uuid = UUID.randomUUID().toString(); 
  saveSysMap(context, "sysCacheMap", "uuid", uuid); 
 } 
 PALog.e(tag, "getUUID : " + uuid); 
return uuid; 
} 

TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); 
String DEVICE_ID = tm.getDeviceId();  

TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);  
String SimSerialNumber = tm.getSimSerialNumber();  

import android.provider.Settings; 
String ANDROID_ID = Settings.System.getString(getContentResolver(), Settings.System.ANDROID_ID); 

String SerialNumber = android.os.Build.SERIAL;  

public class Installation { 
  private static String sID = null; 
  private static final String INSTALLATION = "INSTALLATION"; 
 
  public synchronized static String id(Context context) { 
    if (sID == null) {  
      File installation = new File(context.getFilesDir(), INSTALLATION); 
      try { 
        if (!installation.exists()) 
          writeInstallationFile(installation); 
        sID = readInstallationFile(installation); 
      } catch (Exception e) { 
        throw new RuntimeException(e); 
      } 
    } 
    return sID; 
  } 
 
  private static String readInstallationFile(File installation) throws IOException { 
    RandomAccessFile f = new RandomAccessFile(installation, "r"); 
    byte[] bytes = new byte[(int) f.length()]; 
    f.readFully(bytes); 
    f.close(); 
    return new String(bytes); 
  } 
 
  private static void writeInstallationFile(File installation) throws IOException { 
    FileOutputStream out = new FileOutputStream(installation); 
    String id = UUID.randomUUID().toString(); 
    out.write(id.getBytes()); 
    out.close(); 
  } 
} 

import android.content.Context; 
import android.content.SharedPreferences; 
import android.provider.Settings.Secure; 
import android.telephony.TelephonyManager; 
import java.io.UnsupportedEncodingException; 
import java.util.UUID; 
public class DeviceUuidFactory { 
protected static final String PREFS_FILE = "device_id.xml"; 
protected static final String PREFS_DEVICE_ID = "device_id"; 
protected static UUID uuid; 
public DeviceUuidFactory(Context context) { 
if( uuid ==null ) { 
synchronized (DeviceUuidFactory.class) { 
if( uuid == null) { 
final SharedPreferences prefs = context.getSharedPreferences( PREFS_FILE, 0); 
final String id = prefs.getString(PREFS_DEVICE_ID, null ); 
if (id != null) { 
// Use the ids previously computed and stored in the prefs file 
uuid = UUID.fromString(id); 
} else { 
final String androidId = Secure.getString(context.getContentResolver(), Secure.ANDROID_ID); 
// Use the Android ID unless it's broken, in which case fallback on deviceId, 
// unless it's not available, then fallback on a random number which we store 
// to a prefs file 
try { 
if (!"9774d56d682e549c".equals(androidId)) { 
uuid = UUID.nameUUIDFromBytes(androidId.getBytes("utf8")); 
} else { 
final String deviceId = ((TelephonyManager) context.getSystemService( Context.TELEPHONY_SERVICE )).getDeviceId(); 
uuid = deviceId!=null ? UUID.nameUUIDFromBytes(deviceId.getBytes("utf8")) : UUID.randomUUID(); 
} 
} catch (UnsupportedEncodingException e) { 
throw new RuntimeException(e); 
} 
// Write the value out to the prefs file 
prefs.edit().putString(PREFS_DEVICE_ID, uuid.toString() ).commit(); 
} 
} 
} 
} 
} 
/** 
* Returns a unique UUID for the current android device. As with all UUIDs, this unique ID is "very highly likely" 
* to be unique across all Android devices. Much more so than ANDROID_ID is. 
* 
* The UUID is generated by using ANDROID_ID as the base key if appropriate, falling back on 
* TelephonyManager.getDeviceID() if ANDROID_ID is known to be incorrect, and finally falling back 
* on a random UUID that's persisted to SharedPreferences if getDeviceID() does not return a 
* usable value. 
* 
* In some rare circumstances, this ID may change. In particular, if the device is factory reset a new device ID 
* may be generated. In addition, if a user upgrades their phone from certain buggy implementations of Android 2.2 
* to a newer, non-buggy version of Android, the device ID may change. Or, if a user uninstalls your app on 
* a device that has neither a proper Android ID nor a Device ID, this ID may change on reinstallation. 
* 
* Note that if the code falls back on using TelephonyManager.getDeviceId(), the resulting ID will NOT 
* change after a factory reset. Something to be aware of. 
* 
* Works around a bug in Android 2.2 for many devices when using ANDROID_ID directly. 
* 
* @see http://code.google.com/p/android/issues/detail?id=10603 
* 
* @return a UUID that may be used to uniquely identify your device for most purposes. 
*/ 
public UUID getDeviceUuid() { 
return uuid; 
} 
} 

String myIMSI = android.os.SystemProperties.get(android.telephony.TelephonyProperties.PROPERTY_IMSI);  
// within my emulator it returns: 310995000000000  
String myIMEI = android.os.SystemProperties.get(android.telephony.TelephonyProperties.PROPERTY_IMEI);  
// within my emulator it returns: 000000000000000