mDragflowLayout.setOnItemClickListener(new ClickToDeleteItemListenerImpl(R.id.iv_close){
        
             //点击删除成功时回调
            @Override
            protected void onDeleteSuccess(DragFlowLayout dfl, View child, Object data) {
               //your code
            }
        });

 //预存指定个数的Item. 这些Item会反复使用
 mDragflowLayout.prepareItemsByCount(10);

        //设置拖拽状态监听器
        mDragflowLayout.setOnDragStateChangeListener(new DragFlowLayout.OnDragStateChangeListener() {
            @Override
            public void onDragStateChange(DragFlowLayout dfl, int dragState) {
                System.out.println("on drag state change : dragState = " + dragState);
            }
        });
        //添加view观察者
        mDragflowLayout.addViewObserver(new IViewObserver() {
            @Override
            public void onAddView(View child, int index) {
                Logger.i(TAG, "onAddView", "index = " + index);
            }
            @Override
            public void onRemoveView(View child, int index) {
                Logger.i(TAG, "onRemoveView", "index = " + index);
            }
        });

//root gradle
allprojects {
    repositories {
        maven { url "https://jitpack.io" }
    }
}
// if you use androidx . please use '1.8.8-x'
implementation 'com.github.LightSun:android-drag-FlowLayout:1.8.8'

 <com.heaven7.android.dragflowlayout.DragFlowLayout
                android:id="@+id/drag_flowLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">
    </com.heaven7.android.dragflowlayout.DragFlowLayout>

        //用这个处理点击事件
        mDragflowLayout.setOnItemClickListener(new ClickToDeleteItemListenerImpl(R.id.iv_close){
            @Override
            protected void onDeleteSuccess(DragFlowLayout dfl, View child, Object data) {
               //your code
            }
        });
        
        //DragAdapter 泛型参数就是为了每个Item绑定一个对应的数据。通常很可能是json转化过来的bean对象
        mDragflowLayout.setDragAdapter(new DragAdapter<TestBean>() {
        
            @Override  //获取你的item布局Id
            public int getItemLayoutId() {
                return R.layout.item_drag_flow;
            }
            //绑定对应item的数据
            @Override
            public void onBindData(View itemView, int dragState, TestBean data) {
                itemView.setTag(data);

                TextView tv = (TextView) itemView.findViewById(R.id.tv_text);
                tv.setText(data.text);
                //iv_close是关闭按钮。只有再非拖拽空闲的情况下才显示
                itemView.findViewById(R.id.iv_close).setVisibility(
                        dragState!= DragFlowLayout.DRAG_STATE_IDLE
                        && data.draggable ? View.VISIBLE : View.INVISIBLE);
            }
            //根据指定的child获取对应的数据。
            @NonNull
            @Override
            public TestBean getData(View itemView) {
                return (TestBean) itemView.getTag();
            }
        });

//数据实体实现IDraggable (是否可拖拽) 接口，并且 isDraggable 为false即可
 private static class  TestBean implements IDraggable{
        String text;
        boolean draggable = true; 
        public TestBean(String text) {
            this.text = text;
        }
        @Override
        public boolean isDraggable() {
            return draggable;
        }
    }

repositories {
        jcenter()
}
// if you use androidx . please use '1.8.8-x'
compile 'com.heaven7.android.dragflowlayout:dragflowlayout:1.8.8'

  //设置拖拽状态监听器
    public void setOnDragStateChangeListener(OnDragStateChangeListener l)
 //获取拖拽状态
    public @DragState int getDragState()
 //设置Item点击事件处理器
    public void setOnItemClickListener(OnItemClickListener l)
 //设置数据适配器
    void setDragAdapter(DragAdapter<T> adapter)
 //获取Item管理器(方便CRUD-增删改查 item)
    public DragItemManager getDragItemManager()
 //设置全局是否可拖拽。如果false,则无法长按拖拽了。
    public void setDraggable(boolean draggable)
 //设置缓存view的个数。可避免重复创建item view
    public void prepareItemsByCount(int count)
    
  //标记拖拽开始，这个会使得拖拽状态变更为draggable. .
     public void beginDrag();
 //标记拖拽结束, 内部会自动将拖拽状态改为 DRAG_STATE_IDLE .
    public void finishDrag();

  mDragflowLayout.setOnItemClickListener(new ClickToDeleteItemListenerImpl(R.id.iv_close){
            @Override
            protected void onDeleteSuccess(DragFlowLayout dfl, View child, Object data) {
               //your code
            }
        });