changepoint

(motionevent event, mapview ){18. system. Out. println ("X->" + event. getx () + ":" + point_x );19. system. Out. println ("Y->" + event. Gety () + ":" + point_y );20. If (event. getaction () = motionevent. action_down ){21. changepoint (newpoint, 1 );22.} else if (event. getaction () = motionevent. action_up ){23. newpoint = mapview. getprojection (). frompixels (point_x, point_y );24. changepoint (newpoi

= new point (); the value of the Point variable is passed in, instead of the point object! The value of the Point variable is actually the address (also called reference) of the point object in the memory )!Example: Public class referencetype { Public void changepoint (point ){Point. x = 5;Point. Y = 6;}Public void changereference (point ){Point = NULL;} Public void testpassbystirng (string PARAM ){Param = "newvalue ";} Public static void main (strin

the movement of the map.16. @ Override17. public boolean onTouchEvent (MotionEvent event, MapView mapView ){18. System. out. println ("X->" + event. getX () + ":" + point_X );19. System. out. println ("Y->" + event. getY () + ":" + point_Y );20. if (event. getAction () = MotionEvent. ACTION_DOWN ){21. changePoint (newPoint, 1 );22.} else if (event. getAction () = MotionEvent. ACTION_UP ){23. newPoint = mapView. getProjection (). fromPixels (point_X,

("AAA =" + AA. a); system. out. println ("AAAA =" + AAA. a); system. out. println ("stra =" + stra); system. out. println ("strb =" + strb); A = B; A ++; AAA = AA; AA. A ++; stra = strb; stra = "buhao"; system. out. println ("A =" + a); system. out. println ("B =" + B); system. out. println ("AAA =" + AA. a); system. out. println ("AAAA =" + AAA. a); system. out. println ("stra =" + stra); system. out. println ("strb =" + strb) ;}} Class A {int A;}/* The result is: A = 1B = 2AAA = 11 AAAA = 111

creation is complete, the changestr method is called to put the s address in the string pool" luoliang. me "Address to the str variable, this function is changed to point the str variable to another" www. luoliang. of course, this process needs to determine whether the string pool exists. After the modification, the address of s is printed as the address of "luoliang. me. In this process, all the strings have not changed, because they are constants and only change the address pointed to by the

The development of eagleeye is the most tangled thing in Topo graph development. It has been a hard time for me to complete this eagleeye feature. Eagleeye provides the following functions: 1. view the thumbnail of the entire view 2. View changes are immediately reflected in eagleeye 3. eagleeye Positioning 4. eagleeye Scaling Please read the view of my first design article The eagleeye on the left interacts with the view on the right in real time. In fact, the eagleeye on the left regularly