java - Android IndexOutOfBound Exception : Invalid location 0, size is 0 -

i stuck , error when running gameview class. compiles no error when running on android emulation crashes. post logcat after code.

code

    public class gameview extends view {  private context mycontext; private list<card> deck = new arraylist<card>(); private int scaledcardw; private int scaledcardh; private int screenw; private int screenh; private list<card> myhand = new arraylist<card>(); private list<card> opphand = new arraylist<card>(); private list<card> discardpile = new arraylist<card>(); private float scale; private paint whitepaint; private int oppscore; private int myscore;  public gameview(context context) {     super(context);     mycontext = context;     scale = mycontext.getresources().getdisplaymetrics().density;      whitepaint = new paint();     whitepaint.setantialias(true);     whitepaint.setcolor(color.white);     whitepaint.setstyle(paint.style.stroke);     whitepaint.settextalign(paint.align.left);     whitepaint.settextsize(scale * 15);  }  private void initcards() {     (int = 0; < 4; i++) {         (int j = 102; j < 115; j++) {             int tempid = j + (i * 100);             card tempcard = new card(tempid);             int resourceid = getresources().getidentifier("card" + tempid,                     "drawable", mycontext.getpackagename());             bitmap tempbitmap = bitmapfactory.decoderesource(                     mycontext.getresources(), resourceid);             scaledcardw = (int) (screenw / 8);             scaledcardh = (int) (scaledcardw * 1.28);             bitmap scaledbitmap = bitmap.createscaledbitmap(tempbitmap,                     scaledcardw, scaledcardh, false);             tempcard.setbitmap(scaledbitmap);              deck.add(tempcard);         }     } }  private void drawcard(list<card> handtodraw) {     handtodraw.add(0, deck.get(0));     deck.remove(0);      if (deck.isempty()) {         (int = discardpile.size() - 1; > 0; i--) {             deck.add(discardpile.get(i));             discardpile.remove(i);             collections.shuffle(deck, new random());          }     } }  private void dealcards() {     collections.shuffle(deck, new random());     (int = 0; < 7; i++) {         drawcard(myhand);         drawcard(opphand);     } }  @override public void onsizechanged(int w, int h, int oldw, int oldh) {     super.onsizechanged(w, h, oldw, oldh);     dealcards();  }  @override protected void ondraw(canvas canvas) {     canvas.drawtext("computer score: " + integer.tostring(oppscore), 10,             whitepaint.gettextsize() + 10, whitepaint);     canvas.drawtext("my score: " + integer.tostring(myscore), 10, screenh             - whitepaint.gettextsize() - 10, whitepaint); }      } 

logcat export.

    03-18 07:51:46.795: w/dalvikvm(4395): threadid=3: thread exiting uncaught exception (group=0x4001b188)     03-18 07:51:46.795: e/androidruntime(4395): uncaught handler: thread main exiting due uncaught exception     03-18 07:51:46.805: e/androidruntime(4395): java.lang.indexoutofboundsexception: invalid location 0, size 0     03-18 07:51:46.805: e/androidruntime(4395):     @ java.util.arraylist.get(arraylist.java:341)     03-18 07:51:46.805: e/androidruntime(4395):     @ com.agpfd.crazyeights.gameview.drawcard(gameview.java:66)     03-18 07:51:46.805: e/androidruntime(4395):     @ com.agpfd.crazyeights.gameview.dealcards(gameview.java:81)     03-18 07:51:46.805: e/androidruntime(4395):     @ com.agpfd.crazyeights.gameview.onsizechanged(gameview.java:89)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.view.view.setframe(view.java:6897)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.view.view.layout(view.java:6824)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.widget.framelayout.onlayout(framelayout.java:333)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.view.view.layout(view.java:6830)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.widget.framelayout.onlayout(framelayout.java:333)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.view.view.layout(view.java:6830)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.view.viewroot.performtraversals(viewroot.java:996)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.view.viewroot.handlemessage(viewroot.java:1633)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.os.handler.dispatchmessage(handler.java:99)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.os.looper.loop(looper.java:123)     03-18 07:51:46.805: e/androidruntime(4395):     @ android.app.activitythread.main(activitythread.java:4363)     03-18 07:51:46.805: e/androidruntime(4395):     @ java.lang.reflect.method.invokenative(native method)     03-18 07:51:46.805: e/androidruntime(4395):     @ java.lang.reflect.method.invoke(method.java:521)     03-18 07:51:46.805: e/androidruntime(4395):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:860)     03-18 07:51:46.805: e/androidruntime(4395):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:618)     03-18 07:51:46.805: e/androidruntime(4395):     @ dalvik.system.nativestart.main(native method) 

any appreciated.

initcards() never called anywhere, deck list empty, calling handtodraw.add(0, deck.get(0)) in drawcard() leads exception have, , indicates problem: you're trying access element @ index 0 of list of size 0:

invalid location 0, size 0