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如何使用RecyclerView,试图遵循developer.android.com的建议,但出现错误_Android_Android Recyclerview_Android Adapter_Layout Inflater_Android Viewholder - Fatal编程技术网

如何使用RecyclerView,试图遵循developer.android.com的建议,但出现错误

如何使用RecyclerView,试图遵循developer.android.com的建议,但出现错误,android,android-recyclerview,android-adapter,layout-inflater,android-viewholder,Android,Android Recyclerview,Android Adapter,Layout Inflater,Android Viewholder,我正在尝试使用RecyclerView来显示我的数据集,尝试关注这个网站 问题是,有一些部分出错,无法找到如何修复它,我做的正是该网站所建议的 public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> { private String[] mDataset; // Provide a reference to the views for each data item

我正在尝试使用RecyclerView来显示我的数据集,尝试关注这个网站

问题是,有一些部分出错,无法找到如何修复它,我做的正是该网站所建议的

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private String[] mDataset;

    // Provide a reference to the views for each data item
    // Complex data items may need more than one view per item, and
    // you provide access to all the views for a data item in a view holder
    public static class ViewHolder extends RecyclerView.ViewHolder {
        // each data item is just a string in this case
        public TextView mTextView;
        public ViewHolder(TextView v) {
            super(v);
            mTextView = v;
        }
    }

    // Provide a suitable constructor (depends on the kind of dataset)
    public MyAdapter(String[] myDataset) {
        mDataset = myDataset;
    }

    // Create new views (invoked by the layout manager)
    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
                                               int viewType) {
        // create a new view
        View v = LayoutInflater.from(parent.getContext())
                           .inflate(R.layout.my_text_view, parent, false);
        // set the view's size, margins, paddings and layout parameters
        ...
        ViewHolder vh = new ViewHolder(v);     // ERROR
        return vh;
    }

    // Replace the contents of a view (invoked by the layout manager)
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        // - get element from your dataset at this position
        // - replace the contents of the view with that element
        holder.mTextView.setText(mDataset[position]);

    }

    // Return the size of your dataset (invoked by the layout manager)
    @Override
    public int getItemCount() {
        return mDataset.length;
    }
}
我该怎么做

似乎开发者.android.com有一些打字错误?

你试过吗

ViewHolder vh = new ViewHolder((TextView) v);

ViewHolder中的构造函数持有TextView。因此,您无法将视图发送到ViewHolder。尝试像这样将视图缓存到TextView

ViewHolder vh = new ViewHolder((TextView)v);

膨胀视图时,通常最好创建正在膨胀的特定类型视图的实例。在这种情况下,您正在对
文本视图进行充气。由于
TextView
是从
View
扩展而来,编译器不会对此抱怨,但当您尝试将
View
用作
TextView
时,您的应用程序将崩溃

// create a new view
TextView v = (TextView) LayoutInflater.from(parent.getContext())
                       .inflate(R.layout.my_text_view, parent, false);

视图
更改为
文本视图

请在您的问题中添加ViewHolder代码。您的
ViewHolder
类在哪里?添加了完整的代码,就像在那个网站上一样,似乎我已经得到了答案,但developer.android.com网站上似乎有打字错误。这将有助于解决问题,但是,@Glurt-answer是一种更合适的方法吗?在这种情况下,你的观点没有什么不同。这是第一个答案,而且很有帮助。改为使用@Glurt-answer
// create a new view
TextView v = (TextView) LayoutInflater.from(parent.getContext())
                       .inflate(R.layout.my_text_view, parent, false);