/**
* Returns a unique identifier for this device. The first (in the order the enums constants as
* defined in the IDs enum) non null identifier is returned or a DeviceIDException is thrown. A
* DeviceIDException is also thrown if ignoreBuggyAndroidID is false and the device has the
* Android ID bug
*
* @param ctx an Android constant (to retrieve system services)
* @param ignoreBuggyAndroidID if false, on a device with the android ID bug, the buggy android ID
* is not returned instead a DeviceIDException is thrown
* @return a *device* ID - null is never returned, instead a DeviceIDException is thrown
* @throws DeviceIDException if none of the enum methods manages to return a device ID
*/
public static String getDeviceIdentifier(Context ctx, boolean ignoreBuggyAndroidID)
throws DeviceIDException {
String result = uuid;
if (result == null) {
synchronized (DeviceIdentifier.class) {
result = uuid;
if (result == null) {
for (IDs id : IDs.values()) {
try {
result = uuid = id.getId(ctx);
} catch (DeviceIDNotUniqueException e) {
if (!ignoreBuggyAndroidID) {
throw new DeviceIDException(e);
}
}
if (result != null) {
return result;
}
}
throw new DeviceIDException();
}
}
}
return result;
}
