Android ListView To implement a simple example of a left-slip delete button for a fake iphone _android

Custom ListView is required. Let's make floatdellistview here.

Replication Ontouchevent method. As follows:

@Override public boolean ontouchevent (motionevent ev) {switch (ev.getaction ()) {case Motionevent.action_d 
        own:<br>//Get Pressed Entry view (child view) int childcount = Getchildcount (); 
        int[] listviewcoords = new int[2]; 
        Getlocationonscreen (listviewcoords); 
        int x = (int) ev.getrawx ()-listviewcoords[0]; 
        int y = (int) Ev.getrawy ()-listviewcoords[1]; 
          for (int i = 0; i < ChildCount i++) {downchild = Getchildat (i);//Rect Rect = new Rect (); 
          Assert downchild!= null; 
 
          Downchild.gethitrect (rect); 
 
          int childposition = Getpositionforview (Downchild); 
            if (Rect.contains (x, y)) {downx = Ev.getrawx (); 
 
            int downposition = childposition; 
            Velocitytracker = Velocitytracker.obtain (); 
            Assert velocitytracker!= null; 
            Velocitytracker.addmovement (EV); 
          Break } 
        } 
        Isswipe = false; 
      Break Case MotionEvent.ACTION_MOVE:velocityTracker.addMovement (EV);<br>//calculates horizontal and vertical movement speed Veloc 
        Itytracker.computecurrentvelocity (1000); 
        float Velocityx = Math.Abs (Velocitytracker.getxvelocity ()); 
float Velocityy = Math.Abs (Velocitytracker.getyvelocity ()); 
        <BR>//horizontal move distance float DeltaX = ev.getrawx ()-downx; 
        float Deltamode = Math.Abs (deltax); 
        if (DeltaX >) {//Right swipe (slippery) Isswipetoleft = false; 
        else if (DeltaX < -150) {//left swipe (left-hand) Isswipetoleft = true; }<br>//If the horizontal sliding distance is greater than 0 and the horizontal sliding rate is larger than the vertical, the horizontal slip if (Deltamode > 0 && velocityy < Velocityx 
          {<br>//The floatdelbuttonlayout here is a custom linearlayout. 
          ((floatdelbuttonlayout) downchild). Showdelbutton (EV, isswipetoleft); 
        Isswipe = true; 
      } break; Case MotionEvent.ACTION_CANCEL:case MotionEvent.ACTION_UP:downChild.setSelected (FALSE); 
          if (isswipe) {isswipe = false; 
        return true; 
    } break; 
  return super.ontouchevent (EV); }

Floatdelbuttonlayou.java:

public class Floatdelbuttonlayout extends LinearLayout {<BR>//provides delete button interface private Ondellistener Dellistener; 
<BR>//Current view index in list, using private int index in Dellistener; <BR>//Right or left-slip? 
    <BR> Private Boolean isswipetoleft;<br> public void Setondellistener (Ondellistener listener, int i) { 
    Dellistener = listener; 
  index = i; 
  Public Floatdelbuttonlayout {Super (context, NULL); 
  Public Floatdelbuttonlayout (context, AttributeSet attrs) {Super (context, attrs, 0); Floatdelbuttonlayout (context, AttributeSet attrs, int defstyle) {Super (context, Attrs, defstyl 
  e); 
  <BR>//used to show or hide the delete button. 
    public void Showdelbutton (Motionevent ev, Boolean isswipetoleft) {this.isswipetoleft = Isswipetoleft; 
  Ontouchevent (EV); 
      Private Onclicklistener Clickdel = new Onclicklistener () {@Override public void OnClick (View v) { DelliStener.ondel (index); 
} 
  }; <BR>/**<br> * The event here is the,<br>/@Override public Bo that we have shown from the ontouchevent inside Floatdellistview. Olean Ontouchevent (motionevent event) {switch (motioneventcompat.getactionmasked (event)) {case MOTIONEVENT.A ction_move:<br>//Get Delete button object, layout must have id del_button button view = (Button) findviewbyi 
        D (R.id.del_button); 
        View.settext (R.string.del);<br>//Set button Marginlayoutparams, of course, can be made into a variety of actions, such as fade and so on display. 
        Marginlayoutparams layoutparams = (marginlayoutparams) view.getlayoutparams (); 
        Assert layoutparams!= null; 
          if (isswipetoleft) {view.setvisibility (view.visible); 
          View.setonclicklistener (Clickdel); 
        Layoutparams.leftmargin =-200; 
          else {view.setvisibility (view.gone); 
        Layoutparams.leftmargin = 0; 
        } view.setlayoutparams (Layoutparams); Invalidate (); 
        Break 
  Return Super.ontouchevent (event); 
  public interface Ondellistener {void Ondel (int i); } 
}

Above this Android ListView implementation of the iphone to implement the left-slip Delete button is a simple example of the small series to share all the content, hope to give you a reference, but also hope that we support the cloud-dwelling community.