android - 在我的案例中如何使用 butterknife？

Question

在我的代码中，如果我想使用 butterknife，应该如何更改？

Layout list_item是listview，所以我可以生成butterknife注入(inject)，但我不知道如何修复其他代码，我应该使用ViewHolder吗？

public class GangAdapter extends ArrayAdapter<Gang> {


public GangAdapter(Context context, ArrayList<Gang> gangs) {
    super(context, 0, gangs);
}


@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {

    if (convertView == null) {
        convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
    }

    Gang currentFeature = getItem(position);


    ImageView spotImageView = convertView.findViewById(R.id.Image);
    spotImageView.setImageResource(currentFeature.getImageResourceId());

    TextView featureTextView = convertView.findViewById(R.id.where);
    featureTextView.setText(currentFeature.getFeature());

    TextView detailTextView = convertView.findViewById(R.id.about);
    detailTextView.setText(currentFeature.getExplanation());

    return convertView;
}

这是我的 list_item.xml。我认为没有问题。不是吗？

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<TextView
    android:paddingBottom="10dp"
    android:paddingTop="10dp"
    android:id="@+id/where"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:textSize="24sp"
    android:textStyle="bold" />

<ImageView
    android:id="@+id/image"
    android:layout_width="match_parent"
    android:layout_height="300dp"
    android:layout_gravity="center"
    android:scaleType="centerCrop" />

<TextView
    android:id="@+id/about"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="left" />

Answer 1

您可以设置注释并在绑定(bind)时将膨胀 View 传递给

public class GangAdapter extends ArrayAdapter<Gang> {

    @BindView(R.id.Image) ImageView spotImageView;
    @BindView(R.id.where) TextView featureTextView ;
    @BindView(R.id.about) TextView detailTextView ;
    //^^^^^^^^^^^ do the setup

    public GangAdapter(Context context, ArrayList<Gang> gangs) {
        super(context, 0, gangs);
    }


    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {

        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
            ButterKnife.bind(this, convertView);
            //                     ^^^^^^^^^^^
            // pass the view with which you want to bind the views
        }

        Gang currentFeature = getItem(position);


        spotImageView.setImageResource(currentFeature.getImageResourceId());

        featureTextView.setText(currentFeature.getFeature());

        detailTextView.setText(currentFeature.getExplanation());

        return convertView;
    }
}