Getting Started with Android-android custom controls

The first type: Inherit view

To implement your own properties

<Com.cc.imagewithmarkersample.MyView Android:id="@+id/myviewid"Android:layout_width="wrap_content"Android:layout_height="wrap_content"Android:layout_centerhorizontal="true"SRCLT="@drawable/red"SRCRT="@drawable/green"SRCRB="@drawable/green"/>

 Public classMyView extends View {//private String Mtext;    Private intmsrclt, MSRCRT, MSRCRB; Private StaticFinal String SRCLT ="SRCLT"; Private StaticFinal String SRCRT ="SRCRT"; Private StaticFinal String SRCRB ="SRCRB"; Private StaticFinalintcanvas_w= Max, canvas_h= Max; Private StaticFinalintrect_w= -, rect_h= -; PrivateBitmap Bitmap; Private intBitmap_w,bitmap_h; Private intlt_x=0, lt_y=0; Private intrt_x= -, rt_y=0; Private intrb_x= -, rb_y= -; Private intbitmap_x= -, bitmap_y= -; PrivateRect mrect=NULL;  PublicMyView (Context context) {super (context); }     PublicMyView (Context context, AttributeSet Attrs) {Super (context, attrs);//int textid = Attrs.getattributeresourcevalue (null, "Text", 0);        intSrclefttopid = Attrs.getattributeresourcevalue (NULL, SRCLT,0); intSrcrighttopid = Attrs.getattributeresourcevalue (NULL, SRCRT,0); intSrcrightbottomid = Attrs.getattributeresourcevalue (NULL, SRCRB,0);//Mtext = Context.getresources (). GetText (Textid). toString ();MSRCLT =Srclefttopid; MSRCRT=Srcrighttopid; MSRCRB=Srcrightbottomid; Mrect=NewRect (bitmap_x,bitmap_y,rect_w+bitmap_x,rect_h+bitmap_y); }     Public voidSetimagebitmap (Bitmap BM) {/** Get Picture Height **/Bitmap_w=bm.getwidth (); Bitmap_h=bm.getheight (); Bitmap_x= (canvas_w-bitmap_w)/2; Bitmap_y= (canvas_h-bitmap_h)/2; if(Bitmap! =BM) {Bitmap=m; }} @Overrideprotected voidOnDraw (canvas canvas) {Paint Paint=NewPaint ();        Paint.setcolor (Color.gray);        Canvas.drawbitmap (Bitmap, bitmap_x, bitmap_y, paint); Paint.setalpha ( -);        Canvas.drawrect (Mrect,paint); Paint.setalpha (255);        ONDRAWLT (canvas, paint);        Ondrawrt (canvas, paint); ONDRAWRB (canvas, paint);//Canvas.drawtext (Mtext, BW/2, (), paint);    }    Private voidondrawlt (canvas canvas, paint paint) {InputStream is=getresources (). Openrawresource (MSRCLT); Bitmap Mbitmap= Bitmapfactory.decodestream ( is); intBH =mbitmap.getheight (); intBW =mbitmap.getwidth ();    Canvas.drawbitmap (Mbitmap, lt_x, lt_y, paint); }    Private voidondrawrt (canvas canvas, paint paint) {InputStream is=getresources (). Openrawresource (MSRCRT); Bitmap Mbitmap= Bitmapfactory.decodestream ( is); intBH =mbitmap.getheight (); intBW =mbitmap.getwidth ();    Canvas.drawbitmap (Mbitmap, rt_x, rt_y, paint); }    Private voidONDRAWRB (canvas canvas, paint paint) {InputStream is=getresources (). Openrawresource (MSRCRB); Bitmap Mbitmap= Bitmapfactory.decodestream ( is); intBH =mbitmap.getheight (); intBW =mbitmap.getwidth ();    Canvas.drawbitmap (Mbitmap, rb_x, rb_y, paint); }}

Getting Started with Android-android custom controls