java.lang.IllegalStateException: Required DataBindingComponent is null in class ItemMovieBindingImpl. A BindingAdapter in hbs.com.boostcampmoviesearch.MovieVM is not static and requires an object to use, retrieved from the DataBindingComponent. If you d..

1. Error Content : 

java.lang.IllegalStateException: Required DataBindingComponent is null in class ItemMovieBindingImpl. A BindingAdapter in hbs.com.boostcampmoviesearch.MovieVM is not static and requires an object to use, retrieved from the DataBindingComponent. If you don't use an inflation method taking a DataBindingComponent, use DataBindingUtil.setDefaultComponent or make all BindingAdapter methods static.

2. Error reason:

val globalParam = ???
 
 
 
BindingAdapter(["param1"])
 
fun abcde(param1){
 
globalParam
 
}

BindingAdapter는 독립적이여야 한다. 파라매터들은 xml을 통해서만 값을 받아야한다.

그렇지 않고 globalParam을 이용했기 때문에 오류가 일어나는 것이다.

3. Error Solve

BindingAdapter(["param1","param2"])
 
fun abcde(param1, param2){
 
param1
 
param2
 
}

<ImageView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:scaleType="fitXY"
            bind:param1="@{param1}"
            bind:param2="@{param2}"/>