1. package
2. {
3. import flash.display.Sprite;
4. import flash.external.ExternalInterface;
5. import flash.net.LocalConnection;
7. public class MemeryGcTest extends Sprite
8. {
9. private const num:int = 30000; //子元素个数 根据自己的电脑配置来设置
11. private var parentContainer:Sprite;//父容器
12. private var childrenRect:Array;//所有子元素的引用
14. public function MemeryGcTest(){
15. init();
16. }
17. private function init() : void{
18. parentContainer=new Sprite();
19. addChild(parentContainer);
20. createAllChildrens();
21. removeAllchildrens();
22. setChildrenNull();
23. //doGc();
24. }
27. /**
28. * 移除所有对象
29. *
30. */
31. private function removeAllchildrens():void {
32. removeAllChildrens( );
34. removeChild(parentContainer);
36. }
37. /**
38. * 设置不用对象为null 否则不会进行垃圾回收
39. *
40. */
41. private function setChildrenNull():void{
42. childrenRect = null;
43. parentContainer = null;
44. }
45. /**
46. * 创建所有子元素
47. *
48. */
49. private function createAllChildrens() : void {
50. childrenRect=new Array();
51. for(var i:int = 0;i<num; i++){
52. var sprite:Sprite=new Sprite();
53. childrenRect.push(sprite);
54. sprite.graphics.beginFill(0xff0000);
55. sprite.graphics.drawRect(0+i/50,0,100,100);
56. sprite.graphics.endFill();
57. parentContainer.addChild(sprite);
58. }
59. }
60. /**
61. * 移除所有子元素
62. *
63. */
64. private function removeAllChildrens():void{
65. for(var i:int=0;i<num;i++){
66. parentContainer.removeChild(childrenRect[i]);
67. delete childrenRect[i];
68. }
69. }
70. /**
71. * 强制垃圾回收
72. *
73. */
74. private function doGc():void{
75. try{
76. var conn1:LocalConnection= new LocalConnection();
77. conn1.connect("testGc");
78. var conn2:LocalConnection= new LocalConnection();
79. conn2.connect("testGc");
80. }catch(error:Error){
81. conn1 = null;
82. conn2 = null;
83. }
84. }
85. }
86. 
    

设置回收需要事先将要回收的对象置空。设置为null。