Swipe ListView item From right to left show delete button

Question

I have a custom ListView showing the list of words selecting from database. When I swipe this listview item i want to show Delete button like image below. And when I press t

Answer 1

I have gone through tons of third party libraries to try to achieve this. But none of them exhibits smoothness and usability experience which i wanted. Then i decided to write it myself. And the result was , well, i loved it. I will share the code here. Maybe i will write it as a library which can be embedded in any recycler view in future. But for now here is the code.

Note: i have uses recycler view and ViewHolder. Some values are hardcoded so change them according to your requirement.

• row_layout.xml

• ChatAdaptor.java

  public class ChatAdaptor extends RecyclerView.Adapter {

  List sessions;
  Context context;
  ChatAdaptorInterface listener;
  
  public interface ChatAdaptorInterface{
      void cellClicked(MXGroupChatSession session);
      void utilityButton1Clicked(MXGroupChatSession session);
      void utilityButton2Clicked(MXGroupChatSession session);
  }
  
  public ChatAdaptor(List sessions, ChatAdaptorInterface listener, Context context){
      this.sessions=sessions;
      this.context=context;
      this.listener=listener;
  }
  
  @Override
  public ChatViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
      View view=(View)LayoutInflater.from(parent.getContext()).inflate(R.layout.chat_row,null);
      ChatViewHolder chatViewHolder=new ChatViewHolder(view);
      return chatViewHolder;
  }
  
  @Override
  public void onBindViewHolder(ChatViewHolder holder, final int position) {
      MXGroupChatSession session=this.sessions.get(position);
      holder.selectedSession=session;
      holder.titleView.setText(session.getTopic());
      holder.subtitleView.setText(session.getLastFeedContent());
      Picasso.with(context).load(new File(session.getCoverImagePath())).transform(new CircleTransformPicasso()).into(holder.imageView);
  }
  
  @Override
  public int getItemCount() {
      return sessions.size();
  }
  
  public class ChatViewHolder extends RecyclerView.ViewHolder{
      ImageView imageView;
      TextView titleView;
      TextView subtitleView;
      ViewGroup cell;
      ViewGroup cellContainer;
      Button button1;
      Button button2;
  
      MXGroupChatSession selectedSession;
      private GestureDetectorCompat gestureDetector;
  
      float totalx;
      float buttonTotalWidth;
  
      Boolean open=false;
      Boolean isScrolling=false;
  
  
      public ChatViewHolder(View itemView) {
          super(itemView);
          cell=(ViewGroup) itemView.findViewById(R.id.chat_row_cell);
          cellContainer=(ViewGroup) itemView.findViewById(R.id.chat_row_container);
          button1=(Button) itemView.findViewById(R.id.slide_button_1);
          button2=(Button) itemView.findViewById(R.id.slide_button_2);
  
          button1.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  listener.utilityButton1Clicked(selectedSession);
              }
          });
  
          button2.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  listener.utilityButton2Clicked(selectedSession);
              }
          });
  
          ViewTreeObserver vto = cellContainer.getViewTreeObserver();
          vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
              @Override
              public void onGlobalLayout() {
                  buttonTotalWidth = button1.getWidth()+button2.getWidth();
              }
          });
  
          this.titleView=(TextView)itemView.findViewById(R.id.chat_title);
          subtitleView=(TextView)itemView.findViewById(R.id.chat_subtitle);
          imageView=(ImageView)itemView.findViewById(R.id.chat_image);
          gestureDetector=new GestureDetectorCompat(context,new ChatRowGesture());
  
          cell.setOnTouchListener(new View.OnTouchListener() {
              @Override
              public boolean onTouch(View v, MotionEvent event) {
                  if(gestureDetector.onTouchEvent(event)){
                      return true;
                  }
  
                  if(event.getAction() == MotionEvent.ACTION_UP) {
                      if(isScrolling ) {
                          isScrolling  = false;
                          handleScrollFinished();
                      };
                  }
                  else if(event.getAction() == MotionEvent.ACTION_CANCEL){
                      if(isScrolling ) {
                          isScrolling  = false;
                          handleScrollFinished();
                      };
                  }
                  return false;
              }
          });
      }
  
  
      public class ChatRowGesture extends GestureDetector.SimpleOnGestureListener {
  
          @Override
          public boolean onSingleTapUp(MotionEvent e) {
              if (!open){
                  listener.cellClicked(selectedSession);
              }
              return true;
          }
  
          @Override
          public boolean onDown(MotionEvent e) {
              return true;
          }
  
          @Override
          public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
                  isScrolling=true;
                  totalx=totalx+distanceX;
                  freescroll(totalx);
  
              return true;
          }
      }
  
      void handleScrollFinished(){
          if (open){
              if (totalx>2*buttonTotalWidth/3){
                  slideLeft();
                  totalx=buttonTotalWidth;
              }else{
                  slideRight();
                  totalx=0;
              }
          }else{
              if (totalx>buttonTotalWidth/3){
                  slideLeft();
                  totalx=buttonTotalWidth;
              }else{
                  slideRight();
                  totalx=0;
              }
          }
  
      }
  
      void slideRight(){
          TransitionManager.beginDelayedTransition(cellContainer);
          ViewGroup.MarginLayoutParams params;
          params=(ViewGroup.MarginLayoutParams) cell.getLayoutParams();
          params.setMargins(0,0,0,0);
          cell.setLayoutParams(params);
          open=false;
      }
  
      void slideLeft(){
          TransitionManager.beginDelayedTransition(cellContainer);
          ViewGroup.MarginLayoutParams params;
          params=(ViewGroup.MarginLayoutParams) cell.getLayoutParams();
          params.setMargins(((int)buttonTotalWidth*-1),0,(int)buttonTotalWidth,0);
          cell.setLayoutParams(params);
          open=true;
      }
      void freescroll(float x){
          if (x0){
              int xint=(int)x;
              ViewGroup.MarginLayoutParams params;
              params=(ViewGroup.MarginLayoutParams) cell.getLayoutParams();
              params.setMargins(params.leftMargin,0,xint,0);
              cell.setLayoutParams(params);
          }
      }
  }
  

Hope this helps someone!!