Androidのlistview Sliding list items (click events and slide events coexist)-Bvin

Return Script Blackstone

Here exactly in the project there is such a BT demand, such as the ListView item can respond to click events can also respond to item's left and right sliding events, two events can be independent of each other.

I heard that the iphone list option has such a function of BT, the Android version of the mobile phone QQ and QQ Address book also have a similar effect, in the online all kinds of early-looking programs have tried, or can only slide can not click or can only click can not slide, and the operation is not sensitive, The code on the web is handled in Itemview's Ontouch method, judging the pixel difference between down and up. In fact, this operation is quite inconvenient, down-up this can only be counted as a drag event instead of sliding events, so you will associate the difference between scroll and fling.

You can look at my previous approach, using the Ontouch method of processing, it is difficult to separate sliding events and click events, even if you can swipe is very sensitive, operation 10 times a rare success.

classSwipelistenerImplementsview.ontouchlistener{

Viewholder Holder;
Houselist_item Item;
intStartX = 0;
intEndX = 0;

PublicSwipelistener (Viewholder holder, Houselist_item Item) {
Super();
This. Holder = Holder;
This. item = Item;
}



@Override
PublicBooleanOnTouch (View V, motionevent event) {
//TODO auto-generated Method Stub

if(event.getaction () = = Motionevent.action_down) {
StartX = (int) Event.getx ();
Debuger.log_e ("StartX", "+startx");
returntrue;
}Elseif(event.getaction () = = motionevent.action_up) {
EndX = (int) Event.getx ();
Debuger.log_e ("EndX", "+endx");
if(Startx-endx > 120) {
Debuger.log_e ("Trigger", "left stroke");
Holder.llMenu.setVisibility (view.visible);
returnfalse;
}Elseif(Endx-startx >120) {
Debuger.log_e ("Trigger", "right stroke");
Holder.llMenu.setVisibility (View.gone);
return true;
}Else{
Toast.maketext (CTX, "Click on item", +). Show ();
returntrue;
}


}
returntrue;
}

}

The code has comments that everyone can understand, like the above to let the sliding events and click events independently. At first it was silly to use the Onitemclick event with the ListView, which is really a bunker.

After a half-day effort to explore, today finally very smooth to achieve this effect. Here's the new code:

This is the adapter code, some omitted, mainly gesturedetector such a gesture listener.

PublicclassHouselist_adapterextendsbaseadapter{

PrivateGesturedetector detector;
PrivateListPrivateContext CTX =NULL;
PrivateLayoutinflater Inflater =NULL;
Flinglisteber Listener;

PublicHouselist_adapter (Context ctx,listSuper();
This. list = list;
This. CTX = CTX;
Inflater = (layoutinflater) ctx.getsystemservice (Context.layout_inflater_service);
Listener =NewFlinglisteber ();
detector =NewGesturedetector (listener);
}

@Override
PublicView GetView (intarg0, View arg1, ViewGroup arg2) {
//TODO auto-generated Method Stub
Viewholder holder =NULL;
if(arg1==NULL){
Arg1 = Inflater.inflate (R.layout.house_item_layout,NULL);
Holder =NewViewholder ();
Holder.llitem = (linearlayout) Arg1.findviewbyid (R.id.llitem);
Holder.tvtitle = (TextView) Arg1.findviewbyid (r.id.tvtitle);
Holder.tvbuildearea = (TextView) Arg1.findviewbyid (R.id.tvarea);
Holder.tvprice = (TextView) Arg1.findviewbyid (R.id.tvprice);
Holder.tvpriceunit = (TextView) Arg1.findviewbyid (r.id.tvpriceunit);
Holder.tvroom = (TextView) Arg1.findviewbyid (r.id.tvroom);
Holder.llflag = (linearlayout) Arg1.findviewbyid (R.id.llflag);
Holder.ivflag1 = (ImageView) Arg1.findviewbyid (R.ID.IVFLAG1);
Holder.ivflag2 = (ImageView) Arg1.findviewbyid (R.ID.IVFLAG2);
Holder.ivflag3 = (ImageView) Arg1.findviewbyid (R.ID.IVFLAG3);
Holder.ivflag4 = (ImageView) Arg1.findviewbyid (R.ID.IVFLAG4);
Holder.llmenu = (linearlayout) Arg1.findviewbyid (R.id.house_ltem_menu);
Holder.ivcall = (Button) Arg1.findviewbyid (R.id.ivcall);
Holder.ivdetails = (Button) Arg1.findviewbyid (R.id.ivcall);
Holder.ivmap = (Button) Arg1.findviewbyid (R.ID.IVMAP);
Holder.ivsend = (Button) Arg1.findviewbyid (r.id.ivsend);
Arg1.settag (holder);

}Else{
Holder = (viewholder) arg1.gettag ();
}
FinalHouselist_item Item = List.get (arg0);
Listener.setitem (item);
//Holder.llItem.setOnTouchListener (New Swipelistener (Holder,item));
Holder.llItem.setOnTouchListener (NewView.ontouchlistener () {

@Override
Public BooleanOnTouch (View V, motionevent event) {
//TODO auto-generated Method Stub
returnDetector.ontouchevent (event);
}
});

}

classFlinglisteberImplementsgesturedetector.ongesturelistener{

Houselist_item Item;
Viewholder Holder;

PublicHouselist_item GetItem () {
returnItem
}

PublicvoidSetItem (Houselist_item Item) {
This. item = Item;
}



PublicViewholder Getholder () {
returnHolder
}

PublicvoidSetholder (Viewholder holder) {
This. Holder = Holder;
}

@Override
PublicBooleanOndown (Motionevent e) {
//TODO auto-generated Method Stub
returnfalse;
}

@Override
PublicBooleanOnfling (motionevent E1, motionevent E2,floatVelocityx,
floatVELOCITYY) {
//TODO auto-generated Method Stub
if(E2.getx ()-e1.getx () >20) {
Toast.maketext (CTX, "left slide" +item.areaname, +). Show ();

}Else if(E1.getx ()-e2.getx () >20) {
Toast.maketext (CTX, "right slide" +item.areaname, +). Show ();
}

returnfalse;
}

@Override
PublicvoidOnlongpress (Motionevent e) {
//TODO auto-generated Method Stub

}

@Override
PublicBooleanOnscroll (motionevent E1, motionevent E2,
floatDistancex,floatDistancey) {
//TODO auto-generated Method Stub
returnfalse;
}

@Override
Public voidOnshowpress (Motionevent e) {
//TODO auto-generated Method Stub

}

@Override
PublicBooleanOnsingletapup (Motionevent e) {
//TODO auto-generated Method Stub
Toast.maketext (CTX, "Click on item", +). Show ();
return false;
}

}



}

This lets the item's sliding event to onfling to deal with, click the event to give Onsingletapup so that can let two events independent of each other, but so that the implementation of the discovery will still have a very smooth sliding, And then I thought that it must be the top and bottom of the ListView is in conflict with the left and right sliding events of item, so it is very sensitive to scrollview the previous definition of a touch event, never miss.

//sliding distance and coordinates
PrivatefloatXdistance, Ydistance, XLAST, Ylast;
@Override
PublicBooleanOnintercepttouchevent (motionevent ev) {
//TODO auto-generated Method Stub
Switch(Ev.getaction ()) {
CaseMotionevent.action_down:
Xdistance = Ydistance = 0f;
XLAST = Ev.getx ();
Ylast = Ev.gety ();
Break;
CaseMotionevent.action_move:
FinalfloatCurX = Ev.getx ();
FinalfloatCurY = Ev.gety ();

Xdistance + = Math.Abs (curx-xlast);
Ydistance + = Math.Abs (cury-ylast);
XLAST = CurX;
Ylast = CurY;

if(Xdistance > Ydistance) {
return false;
}
}

returnSuper. onintercepttouchevent (EV);
}

Copy this code into a ListView extension class to overwrite the line.

Original link:/link.php?url=http://www.cnblogs.com/bvin/p/3153191.html, reprint please specify.

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Androidのlistview Sliding list items (click events and slide events coexist)-Bvin