Android: MVVM is it possible to display a message (toast/snackbar etc.) from the ViewModel
0
I want to know what is the best approach to display some sort of message in the view from the ViewModel. My ViewModel is making a POST call and "onResult" I want to pop up a message to the user containing a certain message.
This is my ViewModel:
public class RegisterViewModel extends ViewModel implements Observable {
.
.
.
public void registerUser(PostUserRegDao postUserRegDao) {
repository.executeRegistration(postUserRegDao).enqueue(new Callback<RegistratedUserDTO>() {
@Override
public void onResponse(Call<RegistratedUserDTO> call, Response<RegistratedUserDTO> response) {
RegistratedUserDTO registratedUserDTO = response.body();
/// here I want to set the message and send it to the Activity
if (registratedUserDTO.getRegisterUserResultDTO().getError() != null) {
}
}
});
}
And my Activity:
public class RegisterActivity extends BaseActivity {
@Override
protected int layoutRes() {
return R.layout.activity_register;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
AndroidInjection.inject(this);
super.onCreate(savedInstanceState);
ActivityRegisterBinding binding = DataBindingUtil.setContentView(this, layoutRes());
binding.setViewModel(mRegisterViewModel);
}
What would the best approach be in this case?
android-toast android-snackbar android-mvvm
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
add a comment |
0
I want to know what is the best approach to display some sort of message in the view from the ViewModel. My ViewModel is making a POST call and "onResult" I want to pop up a message to the user containing a certain message.
This is my ViewModel:
public class RegisterViewModel extends ViewModel implements Observable {
.
.
.
public void registerUser(PostUserRegDao postUserRegDao) {
repository.executeRegistration(postUserRegDao).enqueue(new Callback<RegistratedUserDTO>() {
@Override
public void onResponse(Call<RegistratedUserDTO> call, Response<RegistratedUserDTO> response) {
RegistratedUserDTO registratedUserDTO = response.body();
/// here I want to set the message and send it to the Activity
if (registratedUserDTO.getRegisterUserResultDTO().getError() != null) {
}
}
});
}
And my Activity:
public class RegisterActivity extends BaseActivity {
@Override
protected int layoutRes() {
return R.layout.activity_register;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
AndroidInjection.inject(this);
super.onCreate(savedInstanceState);
ActivityRegisterBinding binding = DataBindingUtil.setContentView(this, layoutRes());
binding.setViewModel(mRegisterViewModel);
}
What would the best approach be in this case?
android-toast android-snackbar android-mvvm
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
You can use regular callback interface for this.
– Khemraj
Nov 27 '18 at 9:17
add a comment |
0
0
0
I want to know what is the best approach to display some sort of message in the view from the ViewModel. My ViewModel is making a POST call and "onResult" I want to pop up a message to the user containing a certain message.
This is my ViewModel:
public class RegisterViewModel extends ViewModel implements Observable {
.
.
.
public void registerUser(PostUserRegDao postUserRegDao) {
repository.executeRegistration(postUserRegDao).enqueue(new Callback<RegistratedUserDTO>() {
@Override
public void onResponse(Call<RegistratedUserDTO> call, Response<RegistratedUserDTO> response) {
RegistratedUserDTO registratedUserDTO = response.body();
/// here I want to set the message and send it to the Activity
if (registratedUserDTO.getRegisterUserResultDTO().getError() != null) {
}
}
});
}
And my Activity:
public class RegisterActivity extends BaseActivity {
@Override
protected int layoutRes() {
return R.layout.activity_register;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
AndroidInjection.inject(this);
super.onCreate(savedInstanceState);
ActivityRegisterBinding binding = DataBindingUtil.setContentView(this, layoutRes());
binding.setViewModel(mRegisterViewModel);
}
What would the best approach be in this case?
android-toast android-snackbar android-mvvm
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
I want to know what is the best approach to display some sort of message in the view from the ViewModel. My ViewModel is making a POST call and "onResult" I want to pop up a message to the user containing a certain message.
This is my ViewModel:
public class RegisterViewModel extends ViewModel implements Observable {
.
.
.
public void registerUser(PostUserRegDao postUserRegDao) {
repository.executeRegistration(postUserRegDao).enqueue(new Callback<RegistratedUserDTO>() {
@Override
public void onResponse(Call<RegistratedUserDTO> call, Response<RegistratedUserDTO> response) {
RegistratedUserDTO registratedUserDTO = response.body();
/// here I want to set the message and send it to the Activity
if (registratedUserDTO.getRegisterUserResultDTO().getError() != null) {
}
}
});
}
And my Activity:
public class RegisterActivity extends BaseActivity {
@Override
protected int layoutRes() {
return R.layout.activity_register;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
AndroidInjection.inject(this);
super.onCreate(savedInstanceState);
ActivityRegisterBinding binding = DataBindingUtil.setContentView(this, layoutRes());
binding.setViewModel(mRegisterViewModel);
}
What would the best approach be in this case?
android-toast android-snackbar android-mvvm
android-toast android-snackbar android-mvvm
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
asked Nov 26 '18 at 15:54
user3182266user3182266
43221039
43221039
You can use regular callback interface for this.
– Khemraj
Nov 27 '18 at 9:17
add a comment |
You can use regular callback interface for this.
– Khemraj
Nov 27 '18 at 9:17
You can use regular callback interface for this.
– Khemraj
Nov 27 '18 at 9:17
You can use regular callback interface for this.
– Khemraj
Nov 27 '18 at 9:17
add a comment |
1 Answer
1
active
oldest
votes
0
Display sort of message in view from viewmodel using LiveData.
Step:
- Add LiveData into your viewmodel
- View just observe LiveData and update view related task
For example:
In Viewmodel:
var status = MutableLiveData<Boolean?>()
//In your network successfull response
status.value = true
In your Activity or fragment:
yourViewModelObject.status.observe(this, Observer { status ->
status?.let {
//Display Toast or snackbar
}
})
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Display sort of message in view from viewmodel using LiveData.
Step:
- Add LiveData into your viewmodel
- View just observe LiveData and update view related task
For example:
In Viewmodel:
var status = MutableLiveData<Boolean?>()
//In your network successfull response
status.value = true
In your Activity or fragment:
yourViewModelObject.status.observe(this, Observer { status ->
status?.let {
//Display Toast or snackbar
}
})
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
add a comment |
0
Display sort of message in view from viewmodel using LiveData.
Step:
- Add LiveData into your viewmodel
- View just observe LiveData and update view related task
For example:
In Viewmodel:
var status = MutableLiveData<Boolean?>()
//In your network successfull response
status.value = true
In your Activity or fragment:
yourViewModelObject.status.observe(this, Observer { status ->
status?.let {
//Display Toast or snackbar
}
})
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
add a comment |
0
0
0
Display sort of message in view from viewmodel using LiveData.
Step:
- Add LiveData into your viewmodel
- View just observe LiveData and update view related task
For example:
In Viewmodel:
var status = MutableLiveData<Boolean?>()
//In your network successfull response
status.value = true
In your Activity or fragment:
yourViewModelObject.status.observe(this, Observer { status ->
status?.let {
//Display Toast or snackbar
}
})
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
Display sort of message in view from viewmodel using LiveData.
Step:
- Add LiveData into your viewmodel
- View just observe LiveData and update view related task
For example:
In Viewmodel:
var status = MutableLiveData<Boolean?>()
//In your network successfull response
status.value = true
In your Activity or fragment:
yourViewModelObject.status.observe(this, Observer { status ->
status?.let {
//Display Toast or snackbar
}
})
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
answered Nov 30 '18 at 6:09
Mitesh VanaliyaMitesh Vanaliya
1,3381230
1,3381230
add a comment |
add a comment |
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You can use regular callback interface for this.
– Khemraj
Nov 27 '18 at 9:17