java - 如何在没有上下文的android Holder类中使用Font Awesome？

Question

我正在尝试在我的应用中使用很棒的字体。但是我不知道如何在不将上下文作为参数传递的情况下使用它。这是我的 xml 文件:

    <Button
        android:layout_below="@id/author"
        android:id="@+id/compare_btn"
        android:layout_toRightOf="@id/cart_btn"
        android:layout_width="45dp"
        android:layout_height="wrap_content"
        android:text="@string/fa_random" />

这是我的 Holder 类，它当然不会扩展 Activity 或 fragment 。

    public class ListRowViewHolder extends RecyclerView.ViewHolder {
        protected NetworkImageView productImageURL;
        protected TextView review;
        protected TextView productName;
        protected RelativeLayout recLayout;
        protected TextView categoryId;
        protected TextView price;
        protected Button wishListBtn, cartBtn, compareBtn;

        public ListRowViewHolder(View view) {
            super(view);
            this.productImageURL = (NetworkImageView) view.findViewById(R.id.thumbnail);
            this.productName = (TextView) view.findViewById(R.id.title);
            this.review = (TextView) view.findViewById(R.id.url);
            this.recLayout = (RelativeLayout) view.findViewById(R.id.recLayout);
            this.categoryId = (TextView) view.findViewById(R.id.subreddit);
            this.price = (TextView) view.findViewById(R.id.author);
            this.wishListBtn=(Button) view.findViewById(R.id.wishlist_btn);
  this.cartBtn=(Button) view.findViewById(R.id.cart_btn);//set Font Awesome here
            this.compareBtn=(Button) view.findViewById(R.id.customer_button);//
            view.setClickable(false);
        }

    }

这是我的回收器适配器中的一种方法，它根据 json 数据设置 textview 的文本

 @Override
    public void onBindViewHolder(final ListRowViewHolder listRowViewHolder, int position) {

        ListItems listItems = listItemsList.get(position);
        listRowViewHolder.itemView.setSelected(focusedItem == position);
        String local ="http://carrottech.com/lcart/media/catalog/product/"+listItems.getProductImageURL().trim();
        System.out.print(local+"sdaaaaaaaaaaaaaaaaaaaaaa");
        listRowViewHolder.getLayoutPosition();
        mImageLoader = MySingleton.getInstance(mContext).getImageLoader();
        listRowViewHolder.productImageURL.setImageUrl(local, mImageLoader);
        listRowViewHolder.productImageURL.setDefaultImageResId(R.drawable.reddit_placeholder);

        listRowViewHolder.productName.setText(Html.fromHtml(listItems.getProductName()));
        listRowViewHolder.categoryId.setText(Html.fromHtml(String.valueOf(listItems.getCategoryId())));
        listRowViewHolder.price.setText(Html.fromHtml(String.valueOf(listItems.getProductPrice())));
        listRowViewHolder.review.setText(Html.fromHtml("Write Review"));
        listRowViewHolder.wishListBtn.setText(Html.fromHtml("&#f001;"));
    }

我一直在使用这样的字体类设置 Font awesome:

public class FontManager {

    public static final String ROOT = "fonts/",
            FONTAWESOME = "fonts/fontawesome-webfont.ttf";

    public static Typeface getTypeface(Context context, String font) {
        return Typeface.createFromAsset(context.getAssets(), font);
    }

}

在我以前的 Activity 或 fragment 中

  Typeface iconCalendar = FontManager.getTypeface(getContext(), FontManager.FONTAWESOME);
  jcustomerDobIcon.setTypeface(iconCalendar);

但是如果没有要传递给 FontManager 类的上下文怎么办呢？请帮忙!

Answer 1

how to do it if dont have a context to pass to the FontManager class

使用 View.getContext() 方法从 ListRowViewHolder 类中的 View 获取 Context。

就像在 onBindViewHolder 方法中将 Context 传递给 FontManager 类:

Typeface iconCalendar = FontManager.getTypeface(
                         listRowViewHolder.wishListBtn.getContext(),
                                     FontManager.FONTAWESOME); 
listRowViewHolder.wishListBtn.setTypeface(iconCalendar);
listRowViewHolder.wishListBtn.setText(Html.fromHtml("&#f001;"));