Question

我将上下文传递给recyclerview适配器时遇到问题，请参阅下面的代码。我应该如何在Onclick中使Toast工作？

我也有从这个Onclick

开始新活动的问题

    Intent intent = new Intent(context, Main2Activity.class);
    startActivity(intent);

因为startActivity不被识别为方法。有什么建议吗？

我的代码：

公共类MoviesAdapter扩展了RecyclerView.Adapter {

private List<Movie> moviesList;
private static final String TAG = "MyTestAppState";

Context context;

public MoviesAdapter(Context context, List<Movie> moviesList)  {
    this.context = context;
    this.moviesList = moviesList;
}


public class MyViewHolder extends RecyclerView.ViewHolder {
    public TextView title, year, genre;

    public MyViewHolder(View view) {
        super(view);
        title = (TextView) view.findViewById(R.id.TXtitle);
        genre = (TextView) view.findViewById(R.id.TXgenre);
        year = (TextView) view.findViewById(R.id.TXyear);
    }
}


public MoviesAdapter(List<Movie> moviesList) {
    this.moviesList = moviesList;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.movie_list_row, parent, false);

    itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Toast.makeText(context,"Test", Toast.LENGTH_SHORT).show();

            Log.v(TAG, "TEST");

        }
    });

    return new MyViewHolder(itemView);
}

@Override
public void onBindViewHolder(MyViewHolder holder, final int position) {
    Movie movie = moviesList.get(position);
    holder.title.setText(movie.getTitle());
    holder.genre.setText(movie.getGenre());
    holder.year.setText(movie.getYear());
}

@Override
public int getItemCount() {return moviesList.size();
}

}

Answer 1

使用context.startActivity(intent);代替startActivity(intent);

Answer 2

尝试

context.startActivity(intent);

确保在 AndroidManifest.xml

中添加 Main2Activity

recyclerview

2 个答案: