Using Butter Knife in Custom BaseAdapter SubClass Results in “Unable to inject views” error

Question

I\'m attempting to use Butter Knife to simplify creation of a custom BaseAdapter class. I\'m following the example here: http://jakewharton.github.io/butterknife/ under the \"A

Answer 1

For me it turned out that the ViewBinder was not correctly refreshed. A clean project-build solved this issue.

Answer 2

Also check if you are inflating correct R.layout. file. If not - necessary views are not found and this error occurs.

Answer 3

I had a similar problem with ButterKnife, but the reason was that I was inflating my fragment with the wrong layout.

(I know the question was already answered, but I decided to post my solution in case someone had the same issue)

Answer 4

Those who are still looking it happens if you are trying to bind wrong View type from XML in Java file it .

For example

You have TextView with id result

 <TextView
        android:id="@+id/result"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:gravity="center"
        android:layout_centerHorizontal="true"
        android:layout_margin="3dp"
        android:layout_weight="2"
        android:background="#fff"
        android:text="Calculator"
        android:textSize="25sp" />

And you try to bind it with Button in java file

@BindView(R.id.result) Button result;

It gone crash you app.

Butterknife will throw exception for illegal casting of views as Unable to Inject View Error

Answer 5

Check if your @InjectViews has correct type. I've used ImageView instead of LinearLayout. That might be your problem too.

Update:

Make sure you are not using ButterKnife's @OnItemClick(R.id.non_list_view) with a non ListView. I was using it for a android.support.v7.widget.RecyclerView which was causing following exception:

java.lang.RuntimeException: Unable to inject views for MyFragment{... id=.... android:switcher:...}