Android Drag pictures and multi-layer image overlay

Before moving:

After moving:

Code:

1     // two images to overlay 2     ImageView mIv; 3     ImageView mIv2; 4     // show the image after drawing 5     ImageView Mimageview; 6     canvas    canvas; 7     8     int lastx, lasty;

1     @Override2     protected voidonCreate (Bundle savedinstancestate) {3         Super. OnCreate (savedinstancestate);4 Setcontentview (r.layout.main);5 6Mimageview =(ImageView) Findviewbyid (R.id.conta);7 Mimageview.setimageresource (R.DRAWABLE.A);8Mimageview.setdrawingcacheenabled (true);//Enable caching9          TenMIv2 =(ImageView) Findviewbyid (R.ID.IMG2); OneMiv2.setdrawingcacheenabled (true); AMiv2.setontouchlistener ( This);  -          -MIv =(ImageView) Findviewbyid (r.id.img); theMiv.setdrawingcacheenabled (true); -Miv.setontouchlistener ( This);  -}

Here is the key code for the move

1     @Override2      Public BooleanOnTouch (View V, motionevent event) {3 4         Switch(Event.getaction ()) {5 6          CaseMotionevent.action_down:7LASTX = (int) event.getrawx ();8Lasty = (int) Event.getrawy ();9 Ten              Break; One          CaseMotionevent.action_move: A  -             intDX = (int) event.getrawx ()-Lastx; -             intDY = (int) Event.getrawy ()-lasty; the  -             intleft = V.getleft () +DX; -             inttop = v.gettop () +dy; -             intright = V.getright () +DX; +             intBottom = V.getbottom () +dy; -  +            A log.i (' life ', ' left = ' + left + ' v.getleft= ' + v.getleft () +" ; EVENT.GETRAWX = "
+ event.getrawx () + "; LASTX = "+ Lastx +"dx =" + dx); -  - V.layout (left, top, right, bottom); -  inLASTX = (int) event.getrawx (); -Lasty = (int) Event.getrawy (); to  +              Break; -          Casemotionevent.action_up: the  *              Break; $         }Panax Notoginseng  -         return true; the}

Event handling for the Save button

1@SuppressLint ("Newapi")2      Public voidSave (View view) {3         //Save the superimposed picture4Bitmap Bitmap =Mimageview.getdrawingcache ();5         if(Canvas = =NULL) {6Canvas =NewCanvas (bitmap);7         }8         //draw according to the position of two robots9Canvas.drawbitmap (Miv.getdrawingcache (), Miv.getleft (), Miv.gettop (),NULL);TenCanvas.drawbitmap (Miv2.getdrawingcache (), Miv2.getleft (), Miv2.gettop (),NULL); One          A         //display on the interface - Mimageview.setimagebitmap (bitmap); -          the         //Save to local -File f =NewFile (Getcachedir (). GetAbsolutePath () + "/" -+ systemclock.currentthreadtimemillis () + "Img.jpg"); -         Try { + Savemybitmap (f, bitmap); -}Catch(IOException e) { + e.printstacktrace (); A         } at          -         //two robot settings are not visible - miv.setvisibility (view.gone); - miv2.setvisibility (view.gone); -}

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Android Drag pictures and multi-layer image overlay