1.UUID获取标示符方式
/**
所有的设备都可以返回一个TelephonyManager.getDeviceId()*/
所有的GSM设备(测试设备都装载有SIM卡)可以返回一个TelephonyManager.getSimSerialNumber()
所有的CDMA设备对于getSimSerialNumber()却返回一个空值！
所有添加有谷歌账户的设备可以返回一个ANDROID_ID
所有的CDMA设备对于ANDROID_ID和TelephonyManager.getDeviceId()返回相同的值（只要在设置时添加了谷歌账户）
*/
privateString getMyUUID(){
finalTelephonyManager tm = (TelephonyManager) getBaseContext().getSystemService(this.TELEPHONY_SERVICE);
finalString tmDevice, tmSerial, tmPhone, androidId;
tmDevice =""+ tm.getDeviceId();
tmSerial =""+ tm.getSimSerialNumber();
androidId =""+ android.provider.Settings.Secure.getString(getContentResolver(),android.provider.Settings.Secure.ANDROID_ID);
UUID deviceUuid =newUUID(androidId.hashCode(), ((long)tmDevice.hashCode() <<32) | tmSerial.hashCode());
String uniqueId = deviceUuid.toString();
Log.d("debug","uuid="+uniqueId);
returnuniqueId;
}
2.Installation获取标示符方式：但是当程序卸载后再装 获取的标示符不一样，如果是在已安装的基础上更新程序，则标示符一样
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();
}
}
