Can’t upload/update array of objects NDevice related with BackendlessUser.
field android_id is unique.
I have next error:
BackendlessFault{ code: ‘IllegalArgumentException’, message: ‘java.lang.Object cannot be cast to java.util.Map’ }
I think the main problem that I can convert hashmap to NDevice array, but it’s not possible to convert from NDevice to hashmap fields and set them to BackendlessUser
Application class:
Backendless.Data.mapTableToClass("NDevice", NDevice.class);
Backendless.initApp(this, Consts.BACKENDLESS_APP_ID, Consts.BACKENDLESS_SECRET_KEY, "v1");
public class NDevice implements Serializable {
@SerializedName(Consts.ANDROID_ID)
public String android_id;
@SerializedName(Consts.GCM_TOKEN)
public String gcm_token;
@SerializedName(Consts.MODEL)
public String model;
@SerializedName(Consts.DIGIT_ID)
public String digit_id;
private Boolean notEmpty;
private String objectId;
private java.util.Date created;
private java.util.Date updated;
public String getAndroid_id() {
return android_id;
}
public void setAndroid_id(String android_id) {
this.android_id = android_id;
}
public String getGcm_token() {
return gcm_token;
}
public void setGcm_token(String gcm_token) {
this.gcm_token = gcm_token;
}
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
public String getDigit_id() {
return digit_id;
}
public void setDigit_id(String digit_id) {
this.digit_id = digit_id;
}
public Boolean getNotEmpty() {
return notEmpty;
}
public void setNotEmpty(Boolean notEmpty) {
this.notEmpty = notEmpty;
}
public String getObjectId() {
return objectId;
}
public void setObjectId(String objectId) {
this.objectId = objectId;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
public Date getUpdated() {
return updated;
}
public void setUpdated(Date updated) {
this.updated = updated;
}
}
private static void updateFields(BackendlessUser user) {
Object[] devicesObjectArray = (Object[]) user.getProperty(Consts.DEVICES);
if (devicesObjectArray != null && devicesObjectArray.length > 0) {
NDevice[] devicesArray = (NDevice[]) devicesObjectArray;
List<NDevice> deviceList = Arrays.asList(devicesArray);
deviceList.add(NUser.i().device());
NDevice[] devices = deviceList.toArray(new NDevice[deviceList.size()]);
user.setProperty("devices", devices);
}
}
private void updateUser(BackendlessUser user) {
if (user != null) {
updateFields(user);
Backendless.UserService.update(user, new AsyncCallback<BackendlessUser>() {
public void handleResponse(BackendlessUser user) {
sendUserToFriendsAsync();
}
public void handleFault(BackendlessFault fault) {
NoteMessage.showAlert("update fault", fault.toString());
}
});
}
}
It will be more easy if I be able to save lists as json to BackendlessUser.
But backendless has limitation of string length (500 symbols) ((((
and relations not working properly ((
