Question

我想在我的recyclerview适配器中打开一个片段表单onClick并传递数据。我知道如何打开一个活动（检查下面的代码），但我怎么能以相同的方式打开片段。请查看下面的代码以便更好地理解。我是android的新手，并试图从免费资源中学习。对不起，如果有什么不对。

CODE

@Override
        public void onClick(View v) {
            int position = getAdapterPosition();
            PlaylistDetailsItem playlistDetailsItems = this.playlistDetailsItems.get(position);
            Intent intent = new Intent(this.context, VideoActivity.class);

            intent.putExtra("videoHeading", playlistDetailsItems.getPlaylistDetailsSnippet()
                    .getPlaylistDetailsTitle());

            intent.putExtra("videoDesc", playlistDetailsItems.getPlaylistDetailsSnippet()
                    .getPlaylistDetailsDescription());

            intent.putExtra("videoID", playlistDetailsItems.getPlaylistDetailsSnippet()
                    .getPlaylistDetailsResourceId().getVideoId());

            this.context.startActivity(intent);

        }
    }

Answer 1

在onClick中添加以下代码

 FirstFragment firstFrag = new FirstFragment();
 this.getFragmentManager().beginTransaction()
      .replace(R.id.layout_container, firstFrag, TAG_FRAGMENT)
      .addToBackStack(null)
      .commit();

Answer 2

    Bundle b = new Bundle();
    replaceFragmentInternal(new fragment,b,true,false);

//将数据放入bundle中并在方法中传递。在顶级活动中使用此方法，这样您就不必一次又一次地编写相同的代码。

replaceFragmentInternal(Fragment fragment, Bundle bundle, boolean addToBackStack, boolean anim) {
        if (bundle != null)
            fragment.setArguments(bundle);

        tag = fragment.getClass().getSimpleName();
        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        //ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
        //ft.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_left, R.anim.slide_in_right, R.anim.slide_out_right);
        ft.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left, R.anim.slide_in_left, R.anim.slide_out_right);
        ft.replace(R.id.container_internal, fragment, tag);
        fragment.setRetainInstance(true);

        if (addToBackStack)
            ft.addToBackStack(tag);

        try {
            ft.commit();

        } catch (Exception ex) {
            ex.printStackTrace();
            ft.commitAllowingStateLoss();
        }
    }

Answer 3

首先，您必须创建一个像这样的Fragment类，并记住导入android.support.v4.app.Fragment; （支持v4片段）

public class MyFragment extends Fragment {

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    View  view = inflater.inflate(R.layout.your_xml_file, container, false);
    return view;
}

}

并调用像

这样的片段

    MyFragment myfragment = new Fragment();

//pass data
        Bundle bundle = new Bundle();
        bundle.putString("KEY","DATA");
        myfragment.setArguments(bundle);

     FragmentTransaction fragmentManager = activity.getSupportFragmentManager().beginTransaction();
            fragmentManager.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);

                fragmentManager.addToBackStack(null);

            fragmentManager.replace(R.id.content, mFragment, TAG).commit();

Answer 4

如果没有，您是否创建了Viewholder，然后在关闭适配器之前在底部的回收器视图适配器下方粘贴（在底部“}”之前）

public ViewHolder(View itemView) {
        super(itemView);
        mView = itemView;
        mIdView = (TextView) itemView.findViewById(R.id.id);
        mContentView = (TextView) itemView.findViewById(R.id.content);

        mView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final int position = getAdapterPosition();
                if (null != listener) {     
                    listener.onListFragmentInteraction(mValues.get(position));
                }
           }
    });
}

另请阅读本教程以发送数据： https://developer.android.com/training/basics/fragments/communicating.html

所有这些看起来很难，但这是为了学习而且看起来很专业

如何从onClick打开片段

4 个答案: