How can I observe API call based on user submit button and at same time getValue from edit text which is necessary for submit action?

Question

The problem is if I\'ll write observe statement in onCreate, it won\'t observe based on user click event. Because I want to only call repository API when user fill value in

Answer 1

First I will suggest you to Add data binding in your App

now in your Activity XML do something like this

 viewmodel.doneClicked()}"
    ... />

Now in your ViewModel

//value in key will be same as value in the EditText as it is bidirectional data binding
public MutableLiveData key = new MutableLiveData<>();

//update this MutableLiveData accordingly
private MutableLiveData isDataAvailable = new MutableLiveData<>();

//observe this LiveData
LiveData isDataAvailable(){
    return isDataAvailable;
}

public void doneClicked(){
    //here you can get value of your "key"
    //this method will call when clicking on the button
    //you can call your custom method from here,
    //also update data in "isDataAvailable"
}

In your Activity

viewModel.isDataAvailable().observe(this, aBoolean -> {
    //here you will receive change in value of isDataAvailable
}

PS Your question is not clear at all, and your code is not helpful

Do you want to observe change in mutableLiveData of getLicenseData(...) inside your viewModel?

mutableLiveData = manualLicenseRepository.getLicenseData(licenseKey, macAddress, productId);

Please also change the name of this variable to something related the data it is getting, mutableLiveData is not a good variable name

Edit 1 try this to observe changes in the data, it is recommended to observe LiveData but you can observer MutableLiveData as you have not provided sufficient information I m using your mutableLiveData variable

In your Activity try this

viewModel.mutableLiveData.observe(this, license -> {
    //here you can observe changes in your mutableLiveData when It receives data from Repo
    //here license is the object of data inserted into mutableLiveData from repo
});

Please explain more.

Hope this will help!