Create Options Menu for RecyclerView-Item

问题

How do I create an Options Menu like in the following Screenshot:

The Options Menu should be opened afther clicking on the "More"-Icon of a RecyclerView Item!

My try was this:

@Override
public void onBindViewHolder(Holder holder, int position) {
    holder.txvSongTitle.setText(sSongs[position].getTitle());
    holder.txvSongInfo.setText(sSongs[position].getAlbum() + " - " + sSongs[position].getArtist());

holder.btnMore.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(mContext, "More...", Toast.LENGTH_SHORT).show();
        }
    });
}

But this causes problems because the full item is clicked if I touch on the RecyclerView Item More-Button...

Here's my RecyclerViewOnTouchListener:

public class RecyclerViewOnTouchListener implements RecyclerView.OnItemTouchListener {
    private GestureDetector mGestureDetector;
    private OnTouchCallback mOnTouchCallback;

    public RecyclerViewOnTouchListener(Context context, final RecyclerView recyclerView, final OnTouchCallback onTouchCallback) {
        mOnTouchCallback = onTouchCallback;

        mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }

            @Override
            public void onLongPress(MotionEvent e) {
                View child = recyclerView.findChildViewUnder(e.getX(), e.getY());

                if (child != null && onTouchCallback != null) {
                    onTouchCallback.onLongClick(child, recyclerView.getChildLayoutPosition(child));
                }

                super.onLongPress(e);
            }
        });
    }

    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
        View child = rv.findChildViewUnder(e.getX(), e.getY());

        if (child != null && mOnTouchCallback != null && mGestureDetector.onTouchEvent(e)) {
            mOnTouchCallback.onClick(child, rv.getChildLayoutPosition(child));
        }

        return false;
    }

    @Override
    public void onTouchEvent(RecyclerView rv, MotionEvent e) {

    }

    @Override
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

    }

    public interface OnTouchCallback {
        void onClick(View view, int position);
        void onLongClick(View view, int position);
    }
}

I wasn't able to find any similar problem so I hope you can help me!

回答1:

It is very easy to create an option menu like this. Just add a button in your list item design. You can use the following string to display 3 vertical dots.

<TextView
    android:id="@+id/textViewOptions"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:text="&#8942;"
    android:textAppearance="?android:textAppearanceLarge" />

Now in your adapter inside onBindViewHolder() use the following code.

holder.buttonViewOption.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {

        //creating a popup menu
        PopupMenu popup = new PopupMenu(mCtx, holder.buttonViewOption);
        //inflating menu from xml resource
        popup.inflate(R.menu.options_menu);
        //adding click listener
        popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.menu1:
                        //handle menu1 click
                        return true;
                    case R.id.menu2:
                        //handle menu2 click
                        return true;
                    case R.id.menu3:
                        //handle menu3 click
                        return true;
                    default:
                        return false;
                }
            }
        });
        //displaying the popup
        popup.show();

    }
});

Thats it.

Source: Options Menu For RecyclerView Item

回答2:

I found out that the only Menu, that looks like the Menu above is the PopupMenu.

So in onClick:

@Override
public void onClick(View view, int position, MotionEvent e) {
    ImageButton btnMore = (ImageButton) view.findViewById(R.id.item_song_btnMore);

    if (RecyclerViewOnTouchListener.isViewClicked(btnMore, e)) {
        PopupMenu popupMenu = new PopupMenu(view.getContext(), btnMore);

        getActivity().getMenuInflater().inflate(R.menu.menu_song, popupMenu.getMenu());

        popupMenu.show();

        //The following is only needed if you want to force a horizontal offset like margin_right to the PopupMenu
        try {
            Field fMenuHelper = PopupMenu.class.getDeclaredField("mPopup");
            fMenuHelper.setAccessible(true);
            Object oMenuHelper = fMenuHelper.get(popupMenu);

            Class[] argTypes = new Class[] {int.class};

            Field fListPopup = oMenuHelper.getClass().getDeclaredField("mPopup");
            fListPopup.setAccessible(true);
            Object oListPopup = fListPopup.get(oMenuHelper);
            Class clListPopup = oListPopup.getClass();

            int iWidth = (int) clListPopup.getDeclaredMethod("getWidth").invoke(oListPopup);

            clListPopup.getDeclaredMethod("setHorizontalOffset", argTypes).invoke(oListPopup, -iWidth);

            clListPopup.getDeclaredMethod("show").invoke(oListPopup);
        }
        catch (NoSuchFieldException nsfe) {
            nsfe.printStackTrace();
        }
        catch (NoSuchMethodException nsme) {
            nsme.printStackTrace();
        }
        catch (InvocationTargetException ite) {
            ite.printStackTrace();
        }
        catch (IllegalAccessException iae) {
            iae.printStackTrace();
        }
    }
    else {
        MusicPlayer.playSong(position);
    }
}

You have to make your onClick-Method pass the MotionEvent and finally implement the Method isViewClicked in your RecyclerViewOnTouchListener:

public static boolean isViewClicked(View view, MotionEvent e) {
    Rect rect = new Rect();

    view.getGlobalVisibleRect(rect);

    return rect.contains((int) e.getRawX(), (int) e.getRawY());
}

回答3:

Change the RecyclerViewOnTouchListener class to pass the MotionEvent to the OnTouchCallback implementation.

In the class implementing onItemClick, add the following:

    @Override
    public void onClick(final View view, int position, MotionEvent e) {
        View menuButton = view.findViewById(R.id.menu);
        if (isViewClicked(e, menuButton)) {
            menuButton.setOnCreateContextMenuListener(this);
            menuButton.showContextMenu();
            return;
        }
        ...
    }

Where isViewClicked is the following:

    private boolean isViewClicked(MotionEvent e, View view) {
        Rect rect = new Rect();
        view.getGlobalVisibleRect(rect);
        return rect.contains((int) e.getRawX(), (int) e.getRawY());
    }

To show a list of items anchored to a view (the menu button) use ListPopupWindow

回答4:

step.1 add Recyclerview view layout.

step.2 Recyclerview rows layout recycler_item.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_margin="8dp"
    card_view:cardCornerRadius="4dp">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/itemTextView"
            style="@style/Base.TextAppearance.AppCompat.Body2"
            android:layout_width="wrap_content"
            android:layout_height="?attr/listPreferredItemHeight"
            android:gravity="center_vertical"
            android:layout_centerVertical="true"
            android:padding="8dp" />

        <ImageView
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:src="@mipmap/more"
            android:layout_alignParentRight="true"
            android:text="Button"
            android:padding="10dp"
            android:layout_marginRight="10dp"/>
    </RelativeLayout>
</android.support.v7.widget.CardView>

Step 3. RecyclerAdapter

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private List<String> mItemList;

    public RecyclerAdapter(List<String> itemList) {
        mItemList = itemList;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        View view = LayoutInflater.from(context).inflate(R.layout.recycler_item, parent, false);
        return RecyclerItemViewHolder.newInstance(view);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
        RecyclerItemViewHolder holder = (RecyclerItemViewHolder) viewHolder;
        String itemText = mItemList.get(position);
        holder.setItemText(itemText);
    }

    @Override
    public int getItemCount() {
        return mItemList == null ? 0 : mItemList.size();
    }

}

step.4 menu layout navigation_drawer_menu_items.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    >
        <item
            android:id="@+id/navigation_drawer_item1"
            android:icon="@android:drawable/ic_dialog_map"
            android:title="Item 1" />
        <item
            android:id="@+id/navigation_drawer_item2"
            android:icon="@android:drawable/ic_dialog_info"
            android:title="Item 2" />

        <item
            android:id="@+id/navigation_drawer_item3"
            android:icon="@android:drawable/ic_menu_share"
            android:title="Item 3"/>
</menu>

step.5 add class RecyclerItemClickListener.java

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;

public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
    private OnItemClickListener mListener;



    public interface OnItemClickListener {
        void onItemClick(View view, int position);
    }

    GestureDetector mGestureDetector;

    public RecyclerItemClickListener(Context context, OnItemClickListener listener) {
        mListener = listener;
        mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }
        });
    }

    @Override public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
        View childView = view.findChildViewUnder(e.getX(), e.getY());
        if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
            mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
        }
        return false;
    }

    @Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }

    @Override public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
        // do nothing
    }
}

step.6 add ItemTouchListener on Recyclerview.

private void initRecyclerView() {
        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView); 
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        RecyclerAdapter recyclerAdapter = new RecyclerAdapter(createItemList());
        recyclerView.setAdapter(recyclerAdapter);      

        recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(this, new RecyclerItemClickListener.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, final int position) {

                        ImageView moreImage = (ImageView) view.findViewById(R.id.button);

                        moreImage.setOnClickListener(new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                openOptionMenu(v,position);
                            }
                        });
                    }
                })
        );
    }

step.4 create popup menu.

public void openOptionMenu(View v,final int position){
    PopupMenu popup = new PopupMenu(v.getContext(), v);
    popup.getMenuInflater().inflate(R.menu.navigation_drawer_menu_items, popup.getMenu());
    popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            Toast.makeText(getBaseContext(), "You selected the action : " + item.getTitle()+" position "+position, Toast.LENGTH_SHORT).show();
            return true;
        }
    });
    popup.show();
}

回答5:

All the answers above are great. I just wanna add a small tip. making the 'more' button with textView is also a good solution but there is a more convenient way to do that. you can get the vector asset from vector asset menu in the android studio and use this asset to any button or view wherever you want.

//for instance 
//ic_more_vert_black_24dp.xml
<vector android:height="24dp" android:tint="#cccccc"
android:viewportHeight="24.0" android:viewportWidth="24.0"
android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="#FF000000" android:pathData="M12,8c1.1,0 2,-0.9 2,-2s- 
0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM12,10c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 
-0.9,-2 -2,-2zM12,16c-1.1,0 -2,0.9 -2,2s0.9,2 2,2 2,-0.9 2,-2 -0.9,-2 -2,-2z"/>
</vector>

回答6:

There is a simple way to show menu like this:

ViewHolder: define fields
```
private ImageView menuBtn;
private PopupMenu popupMenu;
```

Create method bind with logic of creating menu on button click and closing it on reusing view:

    if (popupMenu != null) {
        popupMenu.dismiss();
    }
    menuBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                popupMenu = new PopupMenu(v.getContext(), v);
                createMenu(popupMenu.getMenu());

                popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() {
                    @Override
                    public void onDismiss(PopupMenu menu) {
                        popupMenu = null;
                    }
                });
                popupMenu.show();
            }
        });

Method createMenu(Menu menu) is up to you, here is simple example:

 menu.add("Menu title")
     .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                @Override
                public boolean onMenuItemClick(MenuItem item) {
                    // do whatever you want
                }
            });

For handling click on other part of list item you do not need set OnItemTouchListener on recycler view, but simple in method onBindViewHolder do:

holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //handle click here
        }
    });
    holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            //handle long click here
        }
    });

来源：https://stackoverflow.com/questions/37601346/create-options-menu-for-recyclerview-item

标签

android

android-recyclerview