从 RecyclerViewAdapter 启动 BottomSheet

Question

我在布局中有一个卡片视图，它有两个文本视图和一个图像视图，我有一个使用卡片视图设置项目的回收器视图。我想要实现的是在点击 Card View 时启动 Bottom Sheet这是主要活动中的代码列表代码List<Item> lstItem;    lstItem = new ArrayList<>();    lstItem.add(new Item("Samsung","Smartphones","QualitlstItem = new ArrayList<>();y Samsung Smartphones",R.drawable.samsung,"21000"));    lstItem.add(new Item("Lenovo","Smartphones","Quality Lenovo smartphones",R.drawable.lenovo,"15000"));将 Recycler View Adapter 附加到 Main Activity 的代码        FragmentManager fragmentManager = getSupportFragmentManager();        RecyclerViewAdapter2 mainAdapter2 = new RecyclerViewAdapter2(lstItem,fragmentManager);        mainRecyclerView.setLayoutManager(new GridLayoutManager(this,3));        mainRecyclerView.setAdapter(mainAdapter2);Recycler View Adapter 2代码        import android.content.Context;        import android.view.LayoutInflater;        import android.view.View;        import android.view.ViewGroup;        import android.widget.ImageView;        import android.widget.TextView;        import androidx.cardview.widget.CardView;        import androidx.fragment.app.FragmentManager;        import androidx.recyclerview.widget.RecyclerView;        import java.util.List;        public class RecyclerViewAdapter2 extends RecyclerView.Adapter<RecyclerViewAdapter2.MyViewHolder> {        private Context context;        private List<Item> data;        private FragmentManager fragmentManager;        public RecyclerViewAdapter2(List<Item> data, FragmentManager fragmentManager) {        this.data = data;        this.fragmentManager = fragmentManager;    }        @Override        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {          View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview_items, parent, false);          return new MyViewHolder(view);        }}

Answer 1

在您的 onClick 侦听器中，您需要使用fragmentManager传递给适配器的 。相反，你使用getSupportFragmentManager(). 更改后它对我有用。

holder.cardView.setOnClickListener(new View.OnClickListener() {

    @Override

    public void onClick(View v) {

        BottomSheetFragment bottomSheetFragment = new BottomSheetFragment();

        // <-- Here change getSupportFragmentManager() to fragmentManager

        bottomSheetFragment.show(fragmentManager, bottomSheetFragment.getTag());

    }

});

Answer 2

从 RecyclerView.Adapter 调用 BottomSheetDialog 片段。试试这个对我来说效果很好。

DialogFragment bottomSheetDialogFragment = new BottomsheetDialog();               

bottomSheetDialogFragment.show(((FragmentActivity)mContext).getSupportFragmentManager(), bottomSheetDialogFragment.getTag());

Answer 3

你不能这样做：

AppCompatActivity appCompatActivity = new AppCompatActivity();

FragmentManager fragmentManager = appCompatActivity.getSupportFragmentManager();

BottomSheetFragment bottomSheetFragment = new BottomSheetFragment();

bottomSheetFragment.show(fragmentManager, bottomSheetFragment.getTag());

您应该创建一个包含您的 BottomSheetFragment 的新活动（一个新类），并使用意图启动该活动。