Question

我正在尝试将TextView绑定到我的ViewHolder上，并且无法弄清楚我做错了什么。我只是在注释掉的标题User Crumbs下的两行代码中遇到了麻烦。它看起来应该可以工作，但Java告诉我它需要一个表达式这是我的代码：

    @Override
public void onBindViewHolder(BreadSliceViewHolder holder, int position) {
    /****************
     * User Icon *
     ****************/
    int userNameId = 0;
    userNameId = ViewHolderUtilities
            .getUserIcon(userNameId);
    holder.bind(position);
    holder.iconView.setImageResource(userNameId);

    /****************
     * User Crumbs*
     ****************/

    String crumbsString = TextView;
    holder.numberOfCrumbs.setText(crumbsString);
}

@Override
public int getItemCount() {
    return mBreadSliceItems;
}

public interface BreadSliceClickListener {
    void onBreadSliceClick(int clickedItemIndex);
}

class BreadSliceViewHolder extends RecyclerView.ViewHolder
        implements View.OnClickListener {
    final ImageView iconView;
    final ImageView crumbImageView;


    final TextView listItemBreadView;
    final TextView numberOfCrumbs;
    final TextView viewHolderIndex;


    BreadSliceViewHolder(View view) {
        super(view);
        iconView = (ImageView) view.findViewById(R.id.user_icon);
        crumbImageView = (ImageView) view.findViewById(R.id.crumb_imageView);

        numberOfCrumbs = (TextView) view.findViewById(R.id.number_of_crumbs);
        listItemBreadView = (TextView) view.findViewById(R.id.user_name);
        viewHolderIndex = (TextView) view.findViewById(R.id.total_distance);


        view.setOnClickListener(this);
    }

Answer 1

这一行错了：

String crumbsString = TextView;

不知道从哪里提取crumbsString值，没有足够的代码来理解。但它不应该是TextView类。）

Answer 2

将此library(ggplot2) dat <- data.frame(x = c(1, 2, 3), y = c(1, 2, 3)) f <- function(dat) { ylimits = c(min(dat$x, dat$y), max(dat$x, dat$y)) g(dat, ylim = ylimits) } g <- function(dat, ...) { args <- rlang::dots_list(...) ggplot(dat, aes(x = x, y = y)) + geom_point() + coord_cartesian(ylim = eval(args[['ylim']])) } f(dat)更改为：String crumbsString = TextView;

如何将TextView绑定到ViewHolder

2 个答案: