Question

这是适配器类内的我的视图持有者类，它是一个单独的类文件。回收站视图显示为一个片段，单击回收站视图项后，我需要转到一个新的分段活动并获取单击项中显示的文本

    public class BookViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

        public final BookRecyclerAdapter mAdapter;

        private TextView titleTextView, authorTextView;

public BookViewHolder(View itemView, BookRecyclerAdapter adapter) {
            super(itemView);

            titleTextView = (TextView) itemView.findViewById(R.id.listItem_title_tView);
            authorTextView = (TextView) itemView.findViewById(R.id.listItem_author_tView);
            this.mAdapter = adapter;

            itemView.setOnClickListener(this);
        }

private void setBookCardView(String tText, String aText){

            titleTextView.setText(tText);
            authorTextView.setText(aText);
        }

@Override
        public void onClick(View v) {

            String title = titleTextView.getText().toString();
            String author = authorTextView.getText().toString();
//I NEED TO PASS THIS STRINGS TO NEW FRAGMENT
}
}

如何开始一个新的片段活动，该活动可以访问这两个字符串-title和author

Answer 1

使用捆绑包将数据适配器传递给您的点击监听器中的片段

 Fragment fragment = new FragmentName();
    FragmentManager fragmentManager = context.getSupportFragmentManager(); // this is basically context of the class
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    Bundle bundle=new Bundle();
    bundle.putString("string1", "your string");
bundle.putString("string2", "your string"); //key and value
    //set Fragmentclass Arguments
    fragment.setArguments(bundle);
    fragmentTransaction.replace(R.id.content_frame, fragment);
    fragmentTransaction.addToBackStack(null);
    fragmentTransaction.commit();

并获取片段中的数据

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { 
        return inflater.inflate(R.layout.fragment, container, false);
  String strtext=getArguments().getString("string1"); //fetching value by key
  String strtext1=getArguments().getString("string2"); 
    }

Answer 2

在视图持有者类的onClick中：

Bundle bundle = new Bundle();
bundle.putString("key", "value");
bundle.putString("key", "value");
SecondFragment secondFragment = new SecondFragment();
secondFragment.setArguments(bundle);
AppCompatActivity activity = (AppCompatActivity) v.getContext();
activity.getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout, secondFragment).addToBackStack(null).commit();

在接收片段中

View view = inflater.inflate(R.layout.fragment_book, container, false);

        Bundle bundle = this.getArguments();
        if(bundle != null){
            Snackbar.make(view, bundle.get("key").toString(), Snackbar.LENGTH_LONG).show();
        }

Answer 3

在视图持有者类的onClick方法中

Bundle bundle = new Bundle();
bundle.putString("key", "value");
bundle.putString("key", "value");
SecondFragment secondFragment = new SecondFragment();
secondFragment.setArguments(bundle);
AppCompatActivity activity = (AppCompatActivity) v.getContext();
activity.getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout, secondFragment).addToBackStack(null).commit();

之后，您可以开始检索片段中的数据

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { 
        return inflater.inflate(R.layout.fragment, container, false);
  String strtext=getArguments().getString("string1"); //fetching value by key
  String strtext1=getArguments().getString("string2"); 
    }

将recyclerview项目的文本视图中的字符串发送到新片段，并在单击时启动该片段活动

3 个答案: