相关疑难解决方法(0)

所以我使用这个流行的数据绑定代码片段通过传入URL将图像加载到列表项的imageview中:

  <ImageView
        android:layout_width="match_parent"
        android:layout_height="150dp""
        app:imageUrl="@{movie.imageUrl}"
        />

绑定适配器:

class Movie{
    boolean isLoaded;

    @BindingAdapter({"bind:imageUrl"})
        public static void loadImage(final ImageView view, String imageUrl) {

            Picasso.with(view.getContext())
                .load(imageUrl)
                .into(view, new Callback.EmptyCallback() {
                @Override public void onSuccess() {
                    //set isLoaded to true for the listview item
                    // but cannot access boolean isLoaded as it is non static.
                });
    }

如果我只是使BindingAdapter非静态,那么它会抛出错误:

java.lang.IllegalStateException: Required DataBindingComponent is null     in class MovieTileBinding. A BindingAdapter in     com.example.moviesapp.Pojos.Results is not static and requires an object to     use, retrieved from the …