RecyclerView+PopupWindow實現下拉列表選擇效果

已適配Android7.0 popuwindow全屏顯示問題

實現主要代碼：

/**
 * Created by miao on 2017/9/29.
 * 自定義PopupWindow 實現下拉列表效果
 */

public abstract class SpinerPopWindow<T> extends PopupWindow{
    private List<T> datas;
    private Context mContext;
    private LayoutInflater mInflater;
    private RecyclerView recyclerView;
    private SpinerAdapter spinerAdapter;
    private int itemResId;
    private Activity mActivity;
    public SpinerPopWindow(Context context,List<T> list,int resId){
        this.mContext=context;
        this.datas = list;
        mInflater = LayoutInflater.from(mContext);
        this.itemResId=resId;
        mActivity= (Activity) context;
        initPopup();
    }

    /**
     * 初始化PopupWindow
     */
    private void initPopup(){
        View view = mInflater.inflate(R.layout.spiner_window_layout, null);
        setContentView(view);
        //設置PopupWindow寬高
        //設置PopupWindow寬高
        WindowManager windowManager = mActivity.getWindowManager();
        Display display = windowManager.getDefaultDisplay();
        setWidth(display.getWidth());
        setHeight(display.getHeight());
        //設置背景
        ColorDrawable dw = new ColorDrawable(0x60000000);
        setBackgroundDrawable(dw);
        setOutsideTouchable(true);

        recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
        //設置佈局管理器
        recyclerView.setLayoutManager(new LinearLayoutManager(mContext));
        //設置adapter
        spinerAdapter=new SpinerAdapter(mContext,datas,itemResId);
        recyclerView.setAdapter(spinerAdapter);


    }
    class SpinerAdapter extends RecyclerView.Adapter<SpinerAdapter.SpinerHolder>{
        private List<T> spinerList;
        private Context spinerContext;
        private LayoutInflater spinerInflater;
        private int mResId;
        public SpinerAdapter(Context context,List<T> list,int resId){
            this.spinerContext=context;
            this.spinerList = new ArrayList<>();
            this.mResId=resId;
            if (spinerList != null) {
                this.spinerList.addAll(list);
            }
            spinerInflater = LayoutInflater.from(spinerContext);
        }
        public void nodfiyData(List<T> list) {
            if (list != null) {
                this.spinerList.clear();
                this.spinerList.addAll(list);
            }
            notifyDataSetChanged();
        }
        @Override
        public SpinerHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = spinerInflater.inflate(mResId, parent, false);
            SpinerHolder holder=new SpinerHolder(view);

            return holder;
        }

        @Override
        public void onBindViewHolder(SpinerHolder holder, final int position) {
            setData(holder,position);

            //條目點擊事件
            if (mItemClickListener != null) {
                holder.itemView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mItemClickListener.onItemClick(spinerList.get(position), position);
                    }
                });
            }
            //長按點擊事件
            if (mItemLoogClickListener != null) {
                holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
                    @Override
                    public boolean onLongClick(View v) {
                        return mItemLoogClickListener.onItemLongClick(spinerList.get(position), position);
                    }
                });
            }
        }

        @Override
        public int getItemCount() {
            return spinerList.size();
        }

        class SpinerHolder extends RecyclerView.ViewHolder{
            public SpinerHolder(View itemView) {
                super(itemView);
            }
            public <T extends View> T getView(int id) {
                return (T) itemView.findViewById(id);
            }
        }
        //使用接口回調點擊事件
        private ItemClickListener mItemClickListener;

        public void setOnItemClickListener(ItemClickListener itemClickListener) {
            this.mItemClickListener = itemClickListener;
        }

        //使用接口回調點擊事件
        private ItemLongClickListener mItemLoogClickListener;

        public void setOnItemLongClickListener(ItemLongClickListener itemLongClickListener) {
            this.mItemLoogClickListener = itemLongClickListener;
        }
    }

    /**
     * 給佈局設置值
     * @param holder
     * @param position  對應的位置
     */
    public abstract void setData(SpinerAdapter.SpinerHolder holder, int position);

    /**
     * 刷新數據
     * @param list
     */
    public void nodfiyData(List<T> list){
        if(spinerAdapter!=null){
            spinerAdapter.nodfiyData(list);
        }
    }

    /**
     * 點擊事件
     * @param itemClickListener
     */
    public void setOnItemClickListener(ItemClickListener itemClickListener){
        if(spinerAdapter!=null){
            spinerAdapter.setOnItemClickListener(itemClickListener);
        }
    }

    /**
     * 長按事件
     * @param itemLongClickListener
     */
    public void setOnItemLongClickListener(ItemLongClickListener itemLongClickListener){
        if(spinerAdapter!=null){
            spinerAdapter.setOnItemLongClickListener(itemLongClickListener);
        }
    }
   @Override
    public void showAsDropDown(View anchor) {
        if(Build.VERSION.SDK_INT >= 24) {
            Rect rect = new Rect();
            anchor.getGlobalVisibleRect(rect);
            int h = anchor.getResources().getDisplayMetrics().heightPixels - rect.bottom;
            setHeight(h);
        }
        super.showAsDropDown(anchor);
    }

    @Override
    public void showAsDropDown(View anchor, int xoff, int yoff) {
        if(Build.VERSION.SDK_INT >= 24) {
            Rect rect = new Rect();
            anchor.getGlobalVisibleRect(rect);
            int h = anchor.getResources().getDisplayMetrics().heightPixels - rect.bottom;
            setHeight(h);
        }
        super.showAsDropDown(anchor, xoff, yoff);
    }
    /**
     * 設置PopupWindow的位置
     *
     * @param parent
     */
    public void showPopupWindow(View parent) {
        if (!this.isShowing()) {
            this.showAsDropDown(parent, 0, 2);
        } else {
            this.dismiss();
        }
    }
}

條目點擊事件接口：

/**
 * Created by Administrator on 2017/5/28.
 * 點擊事件接口
 */

public interface ItemClickListener {
    void onItemClick(Object obj, int position);

/**
 * Created by Administrator on 2017/5/28.
 * 長按點擊事件接口
 */

public interface ItemLongClickListener {
    boolean onItemLongClick(Object obj, int position);
}

調用：

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private TextView tvItem1, tvItem2, tvItem3;
    private List<String> list;
    private ListPopu listPopu;
    private View line;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initData();
        tvItem1 = (TextView) findViewById(R.id.tv_item1);
        tvItem2 = (TextView) findViewById(R.id.tv_item2);
        tvItem3 = (TextView) findViewById(R.id.tv_item3);
        line = findViewById(R.id.line);


        tvItem1.setOnClickListener(this);
        tvItem2.setOnClickListener(this);
        tvItem3.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        int id = v.getId();
        if (listPopu != null) {
            listPopu.dismiss();
            listPopu = null;
        } else {
            if(id ==R.id.tv_item2){
                setTextDrawable(R.mipmap.up_icon,tvItem2);
            }else if(id ==R.id.tv_item3){
                setTextDrawable(R.mipmap.up_icon,tvItem3);
            }else if(id ==R.id.tv_item1){
                setTextDrawable(R.mipmap.up_icon,tvItem1);
            }
            getList();
        }
    }

    private void getList() {
        listPopu = new ListPopu(this, list, R.layout.spiner_window_layout_item);
        //設置PopWindow顯示的位置
        listPopu.showAsDropDown(line);
        //條目點擊監聽
        listPopu.setOnItemClickListener(new ItemClickListener() {
            @Override
            public void onItemClick(Object obj, int position) {
                Toast.makeText(MainActivity.this, list.get(position), Toast.LENGTH_LONG).show();
                listPopu.dismiss();
                listPopu = null;
            }
        });
        //監聽PopupWindow消失
        listPopu.setOnDismissListener(new PopupWindow.OnDismissListener() {
            @Override
            public void onDismiss() {
                setTextDrawable(R.mipmap.dow_icon,tvItem1);
                setTextDrawable(R.mipmap.dow_icon,tvItem2);
                setTextDrawable(R.mipmap.dow_icon,tvItem3);
            }
        });
    }

    class ListPopu extends SpinerPopWindow<String> {


        public ListPopu(Context context, List<String> list, int resId) {
            super(context, list, resId);
        }

        @Override
        public void setData(SpinerAdapter.SpinerHolder holder, int position) {
            TextView item = holder.getView(R.id.item);
            String s = list.get(position);
            item.setText(s);

        }
    }

    /**
     * 初始化數據
     */
    private void initData() {
        list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add("item:" + i);
        }
    }

    /**
     * 設置textview右邊顯示圖片
     */
    private void setTextDrawable(int imageid, TextView tv) {
        Drawable drawable = getResources().getDrawable(imageid);
        drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
        tv.setCompoundDrawables(null, null, drawable, null);
    }

    /**
     * 監聽物理返回鍵
     *
     * @param keyCode
     * @param event
     * @return
     */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (listPopu != null) {
                listPopu.dismiss();
                listPopu = null;
                return true;
            }
        }
        return super.onKeyDown(keyCode, event);
    }
}

源碼地址：
http://pan.baidu.com/s/1geFS4zp