Question

我在阅读和观看<代码>touchEvents时,主要因为我的GC在有 透镜/幻灯片时正在爆炸,或有许多触动活动。如果我不打上电话,那么我从DDMS中接手的头几条<代码>GC_EXPLICIT即可看出,它只是les子。然后,我开始对周围的屏幕和滑动,这些物体在13513个物体周围被射出,实际上造成超过100天的<代码>GC_FOR_MALLOC。这里是我的简单测试代码,以下是“杀菌剂”的标志。如果你有关于工作或原因的文件,或甚至可能仅仅对我进行另一次深入讨论,请<><>greatly 我们赞赏!<>。 Cheers, and well luck on You own endeavors.

[code]

    public class testClass extends Activity implements IOnSceneTouchListener{   
        int numberOfTouches = 0;        

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            requestWindowFeature(Window.FEATURE_NO_TITLE);
            setContentView(R.layout.main);
        }

        @Override   
        public boolean onSceneTouchEvent(Scene pScene, TouchEvent pSceneTouchEvent) {                       
            numberOfTouches++;              
            return false;   
        } 

    }

<<>strong>[logcat]

06-28 15:24:55.317: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 5 objects / 128 bytes in 53ms
06-28 15:24:55.903: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 5 objects / 136 bytes in 59ms
06-28 15:24:56.708: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 5 objects / 128 bytes in 59ms
06-28 15:25:06.614: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 6 objects / 168 bytes in 58ms
06-28 15:25:09.833: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 7 objects / 192 bytes in 65ms
06-28 15:25:14.270: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 8 objects / 232 bytes in 59ms
06-28 15:25:18.294: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 6 objects / 160 bytes in 59ms
06-28 15:25:33.942: DEBUG/dalvikvm(1103): GC_FOR_MALLOC freed 13513 objects / 1403264 bytes in 121ms
06-28 15:26:53.684: DEBUG/dalvikvm(2139): GC_EXPLICIT freed 140 objects / 6960 bytes in 99ms
06-28 15:26:58.731: DEBUG/dalvikvm(1215): GC_EXPLICIT freed 668 objects / 71136 bytes in 117ms
06-28 15:27:31.637: DEBUG/dalvikvm(1103): GC_FOR_MALLOC freed 13962 objects / 1504296 bytes in 122ms
06-28 15:27:44.723: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 63 objects / 2152 bytes in 59ms
06-28 15:27:46.676: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 5 objects / 128 bytes in 65ms
06-28 15:27:47.238: DEBUG/dalvikvm(2501): GC_EXPLICIT freed 5 objects / 128 bytes in 58ms

我尚未实际解决这一问题,但对这一严重问题的伟大文章 st: rel=“nofollow” Android 问题

[edit] as stracka said, it s most likely due to flooding. My real issue is however with the allocations that are being made on each event? Is there a way to reuse these events/objects to limit allocations due to touch?

I m currently using andEngine, and the touchEvents are pooled so there should be at most ~5 ever allocated from scratch; otherwise they just reuse don t they?

感谢任何想法......。

Answer 1

你们是否使用旧的安乐器? 我刚刚读过Beginning Condo/strong>的“冲撞”问题1.5。作者的工作是让国际律师联合会在Touch()手稿上短暂睡觉,以限制所收到事件的数量。我不知道这一解决办法是多么可行,或者如果对你有任何用处;这本书的相关网页可以在这里找到:

Answer 2

        @Override
        public boolean onTouchEvent(MotionEvent event) {
            numberOfTouches++;
            //events can be handled as well.
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    invalidate();
                    break;
                case MotionEvent.ACTION_MOVE:
                    invalidate();
                    break;
                case MotionEvent.ACTION_UP:
                    invalidate();
                    break;
            }
            return true;
        }

This goes light on GC and mallocs. This is the override method of a View. Try it and reply..

android.view.on TouchEvent (Motion). 活动

参考:

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