自定義popuwindow+recyclerView下拉選擇框

需要說明：1.可自由顯示在控件下方，並根據控件寬度顯示對應的寬度。

2.recycleView可自定義背景，並且可帶自定義顏色側滑欄

3.點擊外部消失，選中條目後消失

 

方法簡單抽取

private PopuWindow popupWindow;
public void showSelectWindows(TextView view,List<String> mDataList)
{
//獲取佈局中的recyclerView
RecyclerView recyclerView = (RecyclerView)LayoutInflater.from(ConferenceReservationActivity.this).inflate(R.layout.ry,null);

recyclerView.setBackgroundResource(R.drawable.shape_white_bg);
recyclerView.setScrollbarFadingEnabled(false);

LinearLayoutManager layoutManager = new LinearLayoutManager(this);

//設置佈局管理器
recyclerView.setLayoutManager(layoutManager);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);

//設置Adapter
ConferenceAdapter adapter = new ConferenceAdapter(mDataList,Activity.this);

recyclerView.setAdapter(adapter);

adapter.setOnItemClickListener(new ConferenceAdapter.OnItemClickListener(){

 view.setText(content);
 popupWindow.dismiss();

});

    popupWindow = new PopupWindow(recyclerView,view.getWidth(),300);
//設置點擊外部消失
    popupWindow.setBackgroundDrawable(new ColorDrawable());
    popupWindow.setFocusable(true)
    //設定在指定view下顯示
    popupWindow.showAsDropDown(view,0,10);



}

 

帶陰影圓角背景shape_white_bg代碼

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
   <item>
       <shape android:shape="rectangle">
           <padding
               android:bottom="2px"
               android:left="2px"
               android:right="2px"
               android:top="2px" />
           <solid android:color="#0DCCCCCC" />
           <corners android:radius="15dp" />
       </shape>
   </item>
   <item>
       <shape android:shape="rectangle">
           <padding
               android:bottom="2px"
               android:left="2px"
               android:right="2px"
               android:top="2px" />
           <solid android:color="#10CCCCCC" />
           <corners android:radius="15dp" />
       </shape>
   </item>
   <item>
       <shape android:shape="rectangle">
           <padding
               android:bottom="2px"
               android:left="2px"
               android:right="2px"
               android:top="2px" />
           <solid android:color="#15CCCCCC" />
           <corners android:radius="15dp" />
       </shape>
   </item>
   <item>
       <shape android:shape="rectangle">
           <padding
               android:bottom="2px"
               android:left="2px"
               android:right="2px"
               android:top="2px" />
           <solid android:color="#20CCCCCC" />
           <corners android:radius="15dp" />
       </shape>
   </item>
   <item>
       <shape android:shape="rectangle">
           <padding
               android:bottom="2px"
               android:left="2px"
               android:right="2px"
               android:top="2px" />
           <solid android:color="#30CCCCCC" />
           <corners android:radius="15dp" />
       </shape>
   </item>
   <item>
       <shape android:shape="rectangle" >
           <solid android:color="#14898989" />
           <corners android:radius="15dp" />
           <padding android:bottom="2px"
               android:left="2px"
               android:right="2px"
               android:top="2px" />
       </shape>
   </item>
   <item>
       <shape android:shape="rectangle" >
           <corners android:radius="15dp" />
           <solid android:color="#FFFFFF" />
           <padding
               android:bottom="3px"
               android:left="3px"
               android:right="3px"
               android:top="3px" />
       </shape>
   </item>
</layer-list>

參考鏈接：https://www.jianshu.com/p/c72d19dafa75

rceycleView的佈局文件

<?xml version="1.0" encoding="utf-8"?>
    <android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_marginTop="5dp"
        android:layout_marginBottom="5dp"
        android:id="@+id/rv_notice"
        android:scrollbars="vertical"
        android:scrollSize="6dp"
        android:fadeScrollbars="false"
        android:scrollbarThumbVertical="@drawable/scorllview_button1"
        android:scrollbarTrackVertical="@drawable/scorllview_bg"
        android:scrollbarsStyle="insideOverlay"
        android:layout_width="match_parent"
        android:layout_height="550dp" />

設置側拉條背景drawable

scorllview_button1.xml

<?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<corners android:radius = "5.5dp"/>
<solid android:color = "#44825d5b"/>
</shape>

scrollview_bg.xml

<?xml version="1.0" encoding="utf-8"?>
    <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape>
<corners android:radius = "5.5dp"/>
<solid android:color = "#226c5448"/>
</shape>
</item>
</layer-list>

adapter

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

private List<String> mList;
private Context mContext;
    public ConferenceAdapter(List<String> list, Context context) {
        
        mList = list;
        mContext = context;
        
        
    }

    @NonNull
    @Override
    public ConferenceAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.conference_item,parent,false);
        return new ViewHolder(v);
    }


    @Override
    public void onBindViewHolder(@NonNull final ConferenceAdapter.ViewHolder holder, final int position) {

        holder.rlItem.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (onItemClickListener!=null)
                onItemClickListener.onItemClick(mList.get(position),position);
            }
        });
        holder.tvItem.setText(mList.get(position));
    }

    /**
     * Returns the total number of items in the data set held by the adapter.
     *
     * @return The total number of items in this adapter.
     */
    @Override
    public int getItemCount() {
        if (mList!=null&&mList.size()>0){
            return mList.size();
        }
       return 0;
    }
    
    public class ViewHolder extends RecyclerView.ViewHolder{

        private final RelativeLayout rlItem;
        private final TextView tvItem;
        public ViewHolder(View itemView) {
            super(itemView);
            rlItem = itemView.findViewById(R.id.rl_item);
            tvItem = itemView.findViewById(R.id.tv_item);
        }
    }
    public interface OnItemClickListener{
        
        void onItemClick(String content,int position);
    }
    OnItemClickListener onItemClickListener;
    
    public void setOnItemClickListener(OnItemClickListener mListener){
        onItemClickListener = mListener;
    }
}

item

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    android:id="@+id/rl_item"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="40dp"
    android:layout_margin="5dp"
    android:background="#ffffff">

    <TextView
        android:id="@+id/tv_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#777777"
        android:textSize="18sp"
        android:layout_centerInParent="true"/>
</RelativeLayout>