I'm using data binding, I want to set a text to a TextView via LiveData like this: 

```
binding.lifecycleOwner = viewLifecycleOwner
binding.viewModel = viewModel

```

to set the textview

```
viewModel.toolbarTitle.postValue(R.string.profile_title_my_documents)

```

view model implementation

```
val toolbarTitle = MutableLiveData<@androidx.annotation.StringRes Int>()

```

and then the xml (removed irrelevant stuff)

```
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    >
  <data>
    <variable
        name="viewModel"
        type="packagename.MyViewModel"
        />
  </data>

  <TextView
        android:id="@+id/title"
        style="@style/toolbar_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@{viewModel.toolbarTitle}"
        />
</layout>

```

so basically if I remove the LiveData and use an Int value it works fine, but with LiveData I get an exception: 

```
2020-04-09 14:38:59.929 19744-19744/ E/AndroidRuntime: FATAL EXCEPTION: main
    Process: , PID: 19744
    java.lang.RuntimeException: Failed to call observer method
        at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:226)

...
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x0
        at android.content.res.Resources.getText(Resources.java:348)
        at android.widget.TextView.setText(TextView.java:5831)
        at ToolbarBindingImpl.executeBindings(ToolbarBindingImpl.java:146)
        at androidx.databinding.ViewDataBinding.executeBindingsInternal(ViewDataBinding.java:472)
        at androidx.databinding.ViewDataBinding.executeBindingsOn(ViewDataBinding.java:486)
        at MyBindingImpl.executeBindings(MyBindingImpl.java:151)
        at androidx.databinding.ViewDataBinding.executeBindingsInternal(ViewDataBinding.java:472)
        at androidx.databinding.ViewDataBinding.executePendingBindings(ViewDataBinding.java:444)
        at androidx.databinding.ViewDataBinding$OnStartListener.onStart(ViewDataBinding.java:1685)
        at java.lang.reflect.Method.invoke(Native Method)

```

it crashes most likely because when the screen open the livedata int value is O and it gets sent to the textview and crashes because there is no resId == 0

How to get around this? and second question, is this a good approach to use livedata like this or is it unnecessary?

**UPDATE**
I used this to get around zero values: 

```
android:text='@{viewModel.toolbarTitle == 0 ? "" : context.getString(viewModel.toolbarTitle)}'

```