RecyclerView实现侧滑删除、置顶、滑动
阅读原文时间:2023年07月10日阅读:1

1、首先在build.gradle里添加

compile 'com.github.mcxtzhang:SwipeDelMenuLayout:V1.2.1'

2、设置recyclerView的item布局


<TextView  
    android:id="@+id/content"  
    android:layout\_width="match\_parent"  
    android:layout\_height="match\_parent"  
    android:background="?android:attr/selectableItemBackground"  
    android:gravity="center"  
    android:text="项目中我是任意复杂的原Item布局" />

<!-- 以下都是侧滑菜单的内容依序排列 -->  
<Button  
    android:id="@+id/btnTop"  
    android:layout\_width="60dp"  
    android:layout\_height="match\_parent"  
    android:background="#d9dee4"  
    android:text="置顶"  
    android:textColor="@android:color/white" />

<Button  
    android:id="@+id/btnUnRead"  
    android:layout\_width="120dp"  
    android:layout\_height="match\_parent"  
    android:background="#ecd50a"  
    android:clickable="true"  
    android:text="标记未读"  
    android:textColor="@android:color/white" />

<Button  
    android:id="@+id/btnDelete"  
    android:layout\_width="60dp"  
    android:layout\_height="match\_parent"  
    android:background="#d9dee4"  
    android:text="删除"  
    android:textColor="@android:color/white" />

3、Activity

public class RecyclerSlideActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private RecyclerSlideAdapter adapter;
private List mDatas;
private LinearLayoutManager mLayoutManager;

@Override  
protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.activity\_recycler\_slide);  
    initData();  
    recyclerView = (RecyclerView) findViewById(R.id.recycler);  
    adapter = new RecyclerSlideAdapter(this, mDatas);  
    adapter.setOnDelListener(new RecyclerSlideAdapter.onSlideListener() {

        @Override  
        public void onDel(int position) {  
            Toast.makeText(RecyclerSlideActivity.this, "删除:" + position, Toast.LENGTH\_SHORT).show();  
            mDatas.remove(position);  
            adapter.notifyItemChanged(position);  
        }

        @Override  
        public void onTop(int position) {  
            String s = mDatas.get(position);  
            mDatas.remove(s);  
            adapter.notifyItemInserted(0);  
            mDatas.add(0, s);  
            adapter.notifyItemRemoved(position + 1);  
            if (mLayoutManager.findFirstVisibleItemPosition() == 0) {  
                recyclerView.scrollToPosition(0);  
            }  
        }  
    });  
    recyclerView.setAdapter(adapter);  
    recyclerView.setLayoutManager(mLayoutManager = new LinearLayoutManager(this));

    recyclerView.setOnTouchListener(new View.OnTouchListener() {  
        @Override  
        public boolean onTouch(View view, MotionEvent motionEvent) {  
            if (motionEvent.getAction() == MotionEvent.ACTION\_UP) {  
                SwipeMenuLayout viewCache = SwipeMenuLayout.getViewCache();  
                if (null != viewCache) {  
                    viewCache.smoothClose();  
                }  
            }  
            return false;  
        }  
    });

}

private void initData() {  
    mDatas = new ArrayList<>();  
    for (int i = 0; i < 40; i++) {  
        mDatas.add("item" + i);  
    }  
}  

}

4、adapter

public class RecyclerSlideAdapter extends RecyclerView.Adapter {
private Context context;
private LayoutInflater mInflater;
private List mDatas;

public RecyclerSlideAdapter(Context context, List<String> mDatas) {  
    this.context = context;  
    this.mDatas = mDatas;  
    mInflater = LayoutInflater.from(context);  
}

@Override  
public Slide onCreateViewHolder(ViewGroup parent, int viewType) {

    return new Slide(mInflater.inflate(R.layout.item\_recycler, parent, false));  
}

@Override  
public void onBindViewHolder(final Slide holder, final int position) {  
    //这句话关掉IOS阻塞式交互效果,并依此打开左滑右滑  

// ((SwipeMenuLayout) holder.itemView).setIos(false).setLeftSwipe(position % 2 == 0 ? true : false);

// holder.content.setText(mDatas.get(position));

    //验证长按  
    holder.content.setOnLongClickListener(new View.OnLongClickListener() {  
        @Override  
        public boolean onLongClick(View view) {  
            Toast.makeText(context, "longclig", Toast.LENGTH\_SHORT).show();  
            return false;  
        }  
    });  
    holder.btnUnRead.setVisibility(position % 3 == 0 ? View.GONE : View.VISIBLE);  
    holder.btnDelete.setOnClickListener(new View.OnClickListener() {  
        @Override  
        public void onClick(View view) {  
            /\*\*  
             \* 如果删除时,不适用adapter.notifyItemRemoved(position),则删除没有动画效果  
             \* 如果想让侧滑菜单同时关闭,需要同时调用(CstSwipeDelMenu)holder.itemView).quickClose();  
             \*/  
            mOnSlideListener.onDel(holder.getAdapterPosition());  
        }  
    });  
    //注意事项,设置item点击,不能对真个holder.itemView设置,只能对第一个TextView设置  
    holder.content.setOnClickListener(new View.OnClickListener() {  
        @Override  
        public void onClick(View view) {  
            Toast.makeText(context, "onClick:" + position, Toast.LENGTH\_SHORT).show();  
        }  
    });  
    //置顶  
    holder.btnTop.setOnClickListener(new View.OnClickListener() {  
        @Override  
        public void onClick(View view) {  
            if (null != mOnSlideListener) {  
                mOnSlideListener.onTop(holder.getAdapterPosition());  
            }  
        }  
    });

}

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

/\*\*  
 \* 和Activity通信的接口  
 \*/  
public interface onSlideListener {  
    void onDel(int position);

    void onTop(int position);  
}

private onSlideListener mOnSlideListener;

public onSlideListener getmOnSlideListener() {  
    return mOnSlideListener;  
}

public void setOnDelListener(onSlideListener mOnDelListener) {  
    this.mOnSlideListener = mOnDelListener;  
}

public class Slide extends RecyclerView.ViewHolder {  
    TextView content;  
    Button btnDelete;  
    Button btnUnRead;  
    Button btnTop;

    public Slide(View itemView) {  
        super(itemView);  
        content = (TextView) itemView.findViewById(R.id.content);  
        btnDelete = (Button) itemView.findViewById(R.id.btnDelete);  
        btnUnRead = (Button) itemView.findViewById(R.id.btnUnRead);  
        btnTop = (Button) itemView.findViewById(R.id.btnTop);  
    }  
}  

}

RecyclerView滑动Scroll

package com.bumptech.glide.integration.recyclerview;

import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.AbsListView;
import android.widget.ListView;

/**
* Converts {@link android.support.v7.widget.RecyclerView.OnScrollListener} events to
* {@link AbsListView} scroll events.
*
*

Requires that the the recycler view be using a {@link LinearLayoutManager} subclass.
*/
public final class RecyclerToListViewScrollListener extends RecyclerView.OnScrollListener {
public static final int UNKNOWN_SCROLL_STATE = Integer.MIN_VALUE;
private final AbsListView.OnScrollListener scrollListener;
private int lastFirstVisible = -1;
private int lastVisibleCount = -1;
private int lastItemCount = -1;

public RecyclerToListViewScrollListener(AbsListView.OnScrollListener scrollListener) {
this.scrollListener = scrollListener;
}

@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
int listViewState;
switch (newState) {
case RecyclerView.SCROLL_STATE_DRAGGING:
listViewState = ListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL;
break;
case RecyclerView.SCROLL_STATE_IDLE:
listViewState = ListView.OnScrollListener.SCROLL_STATE_IDLE;
break;
case RecyclerView.SCROLL_STATE_SETTLING:
listViewState = ListView.OnScrollListener.SCROLL_STATE_FLING;
break;
default:
listViewState = UNKNOWN_SCROLL_STATE;
}

scrollListener.onScrollStateChanged(null /\*view\*/, listViewState);  

}

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

int firstVisible = layoutManager.findFirstVisibleItemPosition();  
int visibleCount = Math.abs(firstVisible - layoutManager.findLastVisibleItemPosition());  
int itemCount = recyclerView.getAdapter().getItemCount();

if (firstVisible != lastFirstVisible || visibleCount != lastVisibleCount  
    || itemCount != lastItemCount) {  
  scrollListener.onScroll(null, firstVisible, visibleCount, itemCount);  
  lastFirstVisible = firstVisible;  
  lastVisibleCount = visibleCount;  
  lastItemCount = itemCount;  
}  

}
}

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