PopupWindow+RecyclerView实现上下滑动框功能

package aud.hik.com.audiorecordtool; import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView; import java.util.List; public class FileListAdapter extends RecyclerView.Adapter<FileListAdapter.ViewHolder> {  private final String TAG = "FileListAdapter";  private List<String> mFileList = null;  private OnItemClickListener mOnItemClickListener = null;  static class ViewHolder extends RecyclerView.ViewHolder{    TextView fileNameView;     public ViewHolder(View view) {      super(view);      fileNameView = (TextView) view.findViewById(R.id.file_name);    }  }   public FileListAdapter(List<String> fileList) {    this.mFileList = fileList;  }   //加载item 的布局 创建ViewHolder实例  @Override  public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item,parent,false);//加载view布局文件    ViewHolder holder = new ViewHolder(view);    return holder;  }   //对RecyclerView子项数据进行赋值  @Override  public void onBindViewHolder(ViewHolder holder, int position) {    if(null == holder)    {      MyLog.LOGE(TAG,"Holder is null");      return;    }    final String fileName= mFileList.get(position);    MyLog.LOGI(TAG,"filename = "+fileName +"filenameview = "+holder.fileNameView);    holder.fileNameView.setText(fileName);     final int tempPosition = position;     if(null != mOnItemClickListener)    {      holder.itemView.setOnClickListener( new View.OnClickListener() {         @Override        public void onClick(View v) {          mOnItemClickListener.onClickItem(tempPosition,fileName);        }      }); //      holder.itemView.setOnLongClickListener( new View.OnLongClickListener() {//        @Override//        public boolean onLongClick(View v) {//          mOnItemClickListener.onLongClick(tempPosition,fileName);//          return false;//        }//      });    }  }   //返回子项个数  @Override  public int getItemCount() {    return mFileList.size();  }    public interface OnItemClickListener{    void onClickItem( int position,String fileName);//    void onLongClickItem( int position,String fileName);  }    public void setOnItemClickListener(OnItemClickListener onItemClickListener ){    this.mOnItemClickListener = onItemClickListener;  }}

private void showPopupWindow(){    View view = LayoutInflater.from(this).inflate(R.layout.pop_window,null);    //初始化List数据    mVecFile = getFileName(TEXT_READ);    //初始化RecyclerView    RecyclerView recyslerview = (RecyclerView) view.findViewById(R.id.recycler_view);    //创建LinearLayoutManager 对象 这里使用 LinearLayoutManager 是线性布局的意思    LinearLayoutManager layoutmanager = new LinearLayoutManager(this);    //设置RecyclerView 布局    recyslerview.setLayoutManager(layoutmanager);    //设置Adapter    FileListAdapter adapter = new FileListAdapter(mVecFile);     adapter.setOnItemClickListener(new FileListAdapter.OnItemClickListener() {//      @Override//      public void onLongClickItem(int position,String fileName) {//        Toast.makeText(AudioRecordActivity.this,"onLongClick事件    您点击了第："+position+"个Item",Toast.LENGTH_SHORT).show();//      }       @Override      public void onClickItem(int position,String fileName) {        mTextName = fileName;        mEdiTxtName.setText(mTextName);        String mTextPath = TEXT_READ+"/"+mTextName;        // File file = new File(path);        Toast.makeText(AudioRecordActivity.this, mTextPath, Toast.LENGTH_SHORT).show();         mList = new ArrayList<>();        try {          FileReader fr = new FileReader(mTextPath);          BufferedReader br = new BufferedReader(fr);//以行的方式读取文件          String str = null;          while(null != (str = br.readLine()))          {            mList.add(str);            MyLog.LOGI(TAG,str);          }          fr.close();          br.close();        }        catch(FileNotFoundException e)        {          e.printStackTrace();        }        catch (IOException e){          e.printStackTrace();        }         MyLog.LOGI(TAG,"list size="+mList.size());        if(0 != mList.size())        {          mTextView.setText(mList.get(mListIndex));        }        else        {          return;        }      }    });    recyslerview.setAdapter(adapter);        //解决android7.0以上手机的适配问题    PopupWindow popupWindow = new PopupWindow(view, LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT){      @Override      public void showAsDropDown(View anchor) {        if(Build.VERSION.SDK_INT >= 24){          Rect visibleFrame = new Rect();          anchor.getGlobalVisibleRect(visibleFrame);          int height = anchor.getResources().getDisplayMetrics().heightPixels - visibleFrame.bottom;          setHeight(height);        }        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);      }    };    ColorDrawable dw = new ColorDrawable(0x10000000);    popupWindow.setBackgroundDrawable(dw);    popupWindow.setOutsideTouchable(true);    popupWindow.setFocusable(true);     popupWindow.showAsDropDown(mEdiTxtName);  }

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal"  android:background="@color/colorPrimaryDark"  android:layout_margin="1dp">   <TextView    android:id="@+id/file_name"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:textColor="@color/colorWhite"    android:textSize = "30sp"/> </LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">   <android.support.v7.widget.RecyclerView    android:id="@+id/recycler_view"    android:layout_width="match_parent"    android:layout_height="match_parent">  </android.support.v7.widget.RecyclerView></LinearLayout>