Question

我试图通过使用下面的代码将Gson对象传递给intent，并将其传递给另一个活动以获取详细信息。我尝试在评论中使用此指令中的代码，但仍然是错误的..（How to pass gson serialised object to Intent in android?）

这是我的代码：

public class CustomListAdapter extends ArrayAdapter<Beer> {


    Context context;
    int layoutResourceId;
    public List<Beer> data = null;


   public CustomListAdapter(Context context, int resource, List<Beer> objects) {
        super(context, resource, objects);

        this.context = context;
        this.layoutResourceId = resource;
        this.context = context;
        this.data = objects;

    }

    static class DataHolder
    {
        ImageView ivBeer;
        TextView tvBeerName;
        TextView tvDescription;
        TextView abv;
    }

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

        DataHolder holder = null;

        if (convertView == null)
        {
            LayoutInflater inflater = ((Activity) context).getLayoutInflater();
            convertView = inflater.inflate(layoutResourceId, parent,false);
            holder = new DataHolder();

            holder.ivBeer = (ImageView) convertView.findViewById(R.id.ivBeer);
            holder.tvBeerName = (TextView) convertView.findViewById(R.id.tvBeerName);
            holder.tvDescription = (TextView) convertView.findViewById(R.id.tvDescription);
            holder.abv = (TextView) convertView.findViewById(R.id.abv);

            convertView.setTag(holder);
        }

        else
        {
            holder = (DataHolder) convertView.getTag();
        }

        Beer beer=data.get(position);

        holder.tvBeerName.setText(beer.name);
        Picasso.with(context).load(beer.imageUrl).into(holder.ivBeer);
        holder.tvDescription.setText(beer.description);
        holder.abv.setText(beer.abv);


// this is the trouble part: 

        Gson gson = new Gson();
            Intent intent = new Intent (CustomListAdapter.this, BeerDetailActivity.class);
            intent.putExtra("obj", gson.toJson(data));


        return convertView;

    }
}

Answer 1

如果您想将data对象传递给另一个活动BeerDetailActivity，则必须“调用”此活动开始：

context.startActivity(intent);

紧随其后：

intent.putExtra("obj", gson.toJson(data));

但是我不确定在getView

的adapter方法中这是否正确

如何将适配器传递到另一个活动屏幕？

1 个答案: