android - 为什么我在运行我的应用程序一段时间后得到 ConcurrentModificationException？

Question

我正在开发一个应用程序，我正在使用 achartengine 绘制一个图表，该图表显示了现在要测试的随机数数据。它按预期工作，但在运行几秒钟后它会崩溃，并且当它试图让 run() 线程进入睡眠状态时它会崩溃。它是 LogCat：

04-22 18:22:02.253: I/(1902): run() -> LogicAnalizerView
04-22 18:22:02.262: I/(1902): run() -> LogicAnalizerView - input.add(5.1999974),factor[n]
04-22 18:22:02.271: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:02.271: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:02.781: I/(1902): run() -> LogicAnalizerView
04-22 18:22:02.781: I/(1902): run() -> LogicAnalizerView - input.add(5.2999973),factor[n]
04-22 18:22:02.802: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:02.802: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:03.182: D/dalvikvm(1902): GC_CONCURRENT freed 445K, 6% free 9330K/9863K, paused 42ms+33ms
04-22 18:22:03.522: I/(1902): run() -> LogicAnalizerView
04-22 18:22:03.522: I/(1902): run() -> LogicAnalizerView - input.add(5.399997),factor[n]
04-22 18:22:03.522: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:03.522: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:04.052: I/(1902): run() -> LogicAnalizerView
04-22 18:22:04.052: I/(1902): run() -> LogicAnalizerView - input.add(5.499997),factor[n]
04-22 18:22:04.084: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:04.084: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:04.607: I/(1902): run() -> LogicAnalizerView
04-22 18:22:04.612: I/(1902): run() -> LogicAnalizerView - input.add(5.599997),factor[n]
04-22 18:22:04.622: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:04.632: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:05.131: I/(1902): run() -> LogicAnalizerView
04-22 18:22:05.131: I/(1902): run() -> LogicAnalizerView - input.add(5.699997),factor[n]
04-22 18:22:05.163: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:05.163: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:05.687: I/(1902): run() -> LogicAnalizerView
04-22 18:22:05.687: I/(1902): run() -> LogicAnalizerView - input.add(5.799997),factor[n]
04-22 18:22:05.691: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:05.691: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:06.302: I/(1902): run() -> LogicAnalizerView
04-22 18:22:06.302: I/(1902): run() -> LogicAnalizerView - input.add(5.8999968),factor[n]
04-22 18:22:06.351: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:06.351: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:06.962: I/(1902): run() -> LogicAnalizerView
04-22 18:22:06.962: I/(1902): run() -> LogicAnalizerView - input.add(5.9999967),factor[n]
04-22 18:22:06.962: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:06.991: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:07.491: I/(1902): run() -> LogicAnalizerView
04-22 18:22:07.491: I/(1902): run() -> LogicAnalizerView - input.add(6.0999966),factor[n]
04-22 18:22:07.521: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:07.521: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:07.933: D/dalvikvm(1902): GC_CONCURRENT freed 436K, 6% free 9334K/9863K, paused 12ms+62ms
04-22 18:22:08.061: I/(1902): run() -> LogicAnalizerView
04-22 18:22:08.061: I/(1902): run() -> LogicAnalizerView - input.add(6.1999965),factor[n]
04-22 18:22:08.061: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:08.061: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:08.133: D/AndroidRuntime(1902): Shutting down VM
04-22 18:22:08.133: W/dalvikvm(1902): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
04-22 18:22:08.481: E/AndroidRuntime(1902): FATAL EXCEPTION: main
04-22 18:22:08.481: E/AndroidRuntime(1902): java.util.ConcurrentModificationException
04-22 18:22:08.481: E/AndroidRuntime(1902):     at java.util.TreeMap$MapIterator.stepForward(TreeMap.java:883)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at java.util.TreeMap$BoundedMap$BoundedIterator.stepForward(TreeMap.java:1484)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at java.util.TreeMap$BoundedMap$BoundedEntrySet$1.next(TreeMap.java:1512)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at java.util.TreeMap$BoundedMap$BoundedEntrySet$1.next(TreeMap.java:1510)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at org.achartengine.chart.XYChart.draw(XYChart.java:250)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at org.achartengine.GraphicalView.onDraw(GraphicalView.java:166)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.View.draw(View.java:10978)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewGroup.drawChild(ViewGroup.java:2887)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewGroup.drawChild(ViewGroup.java:2885)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewGroup.drawChild(ViewGroup.java:2885)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.View.draw(View.java:10981)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.widget.FrameLayout.draw(FrameLayout.java:450)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2126)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewRootImpl.draw(ViewRootImpl.java:2026)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1634)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.os.Looper.loop(Looper.java:137)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at android.app.ActivityThread.main(ActivityThread.java:4424)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at java.lang.reflect.Method.invokeNative(Native Method)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at java.lang.reflect.Method.invoke(Method.java:511)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-22 18:22:08.481: E/AndroidRuntime(1902):     at dalvik.system.NativeStart.main(Native Method)
04-22 18:22:08.561: I/(1902): run() -> LogicAnalizerView
04-22 18:22:08.561: I/(1902): run() -> LogicAnalizerView - input.add(6.2999964),factor[n]
04-22 18:22:08.581: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:08.581: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:09.112: I/(1902): run() -> LogicAnalizerView
04-22 18:22:09.112: I/(1902): run() -> LogicAnalizerView - input.add(6.3999963),factor[n]
04-22 18:22:09.131: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:09.131: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:09.495: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:09.671: I/(1902): run() -> LogicAnalizerView
04-22 18:22:09.681: I/(1902): run() -> LogicAnalizerView - input.add(6.499996),factor[n]
04-22 18:22:09.691: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:09.701: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:09.731: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:10.231: I/(1902): run() -> LogicAnalizerView
04-22 18:22:10.231: I/(1902): run() -> LogicAnalizerView - input.add(6.599996),factor[n]
04-22 18:22:10.251: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:10.251: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:10.572: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:11.101: I/(1902): run() -> LogicAnalizerView
04-22 18:22:11.101: I/(1902): run() -> LogicAnalizerView - input.add(6.699996),factor[n]
04-22 18:22:11.101: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:11.101: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:11.155: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:11.615: I/(1902): run() -> LogicAnalizerView
04-22 18:22:11.615: I/(1902): run() -> LogicAnalizerView - input.add(6.799996),factor[n]
04-22 18:22:11.641: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:11.641: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:12.182: I/(1902): run() -> LogicAnalizerView
04-22 18:22:12.182: I/(1902): run() -> LogicAnalizerView - input.add(6.899996),factor[n]
04-22 18:22:12.213: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:12.213: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:12.381: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:12.581: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:12.762: I/(1902): run() -> LogicAnalizerView
04-22 18:22:12.762: I/(1902): run() -> LogicAnalizerView - input.add(6.9999957),factor[n]
04-22 18:22:12.821: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:12.821: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:13.134: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:13.351: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:13.361: I/(1902): run() -> LogicAnalizerView
04-22 18:22:13.361: I/(1902): run() -> LogicAnalizerView - input.add(7.0999956),factor[n]
04-22 18:22:13.361: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:13.361: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:13.491: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:13.551: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:13.873: I/(1902): run() -> LogicAnalizerView
04-22 18:22:13.873: I/(1902): run() -> LogicAnalizerView - input.add(7.1999955),factor[n]
04-22 18:22:13.873: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:13.873: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:14.001: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:14.073: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:14.422: I/(1902): run() -> LogicAnalizerView
04-22 18:22:14.422: I/(1902): run() -> LogicAnalizerView - input.add(7.2999954),factor[n]
04-22 18:22:14.422: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:14.422: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:14.541: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:14.621: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:14.921: I/(1902): run() -> LogicAnalizerView
04-22 18:22:14.933: I/(1902): run() -> LogicAnalizerView - input.add(7.3999953),factor[n]
04-22 18:22:14.953: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:14.953: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:15.151: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:15.401: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:15.461: I/(1902): run() -> LogicAnalizerView
04-22 18:22:15.461: I/(1902): run() -> LogicAnalizerView - input.add(7.499995),factor[n]
04-22 18:22:15.461: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:15.474: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:15.601: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:15.661: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:16.028: I/(1902): run() -> LogicAnalizerView
04-22 18:22:16.028: I/(1902): run() -> LogicAnalizerView - input.add(7.599995),factor[n]
04-22 18:22:16.031: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:16.031: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:16.171: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:16.241: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:16.591: I/(1902): run() -> LogicAnalizerView
04-22 18:22:16.591: I/(1902): run() -> LogicAnalizerView - input.add(7.699995),factor[n]
04-22 18:22:16.621: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:16.621: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:16.731: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:16.791: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:17.145: I/(1902): run() -> LogicAnalizerView
04-22 18:22:17.145: I/(1902): run() -> LogicAnalizerView - input.add(7.799995),factor[n]
04-22 18:22:17.145: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:17.145: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:17.271: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:17.331: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:17.684: I/(1902): run() -> LogicAnalizerView
04-22 18:22:17.684: I/(1902): run() -> LogicAnalizerView - input.add(7.899995),factor[n]
04-22 18:22:17.704: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:17.711: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:17.831: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:17.902: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:18.221: I/(1902): run() -> LogicAnalizerView
04-22 18:22:18.231: I/(1902): run() -> LogicAnalizerView - input.add(7.9999948),factor[n]
04-22 18:22:18.243: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:18.243: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:18.364: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:18.442: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:18.795: I/(1902): run() -> LogicAnalizerView
04-22 18:22:18.795: I/(1902): run() -> LogicAnalizerView - input.add(8.099995),factor[n]
04-22 18:22:18.802: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:18.815: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:18.932: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:18.991: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:19.371: I/(1902): run() -> LogicAnalizerView
04-22 18:22:19.371: I/(1902): run() -> LogicAnalizerView - input.add(8.199995),factor[n]
04-22 18:22:19.392: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:19.392: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:19.441: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:19.522: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:19.952: I/(1902): run() -> LogicAnalizerView
04-22 18:22:19.952: I/(1902): run() -> LogicAnalizerView - input.add(8.299995),factor[n]
04-22 18:22:19.952: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:19.952: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:20.002: I/dalvikvm(1902): threadid=3: reacting to signal 3
04-22 18:22:20.074: I/dalvikvm(1902): Wrote stack traces to '/data/anr/traces.txt'
04-22 18:22:20.513: I/(1902): run() -> LogicAnalizerView
04-22 18:22:20.513: I/(1902): run() -> LogicAnalizerView - input.add(8.399996),factor[n]
04-22 18:22:20.534: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:20.534: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:21.066: I/(1902): run() -> LogicAnalizerView
04-22 18:22:21.092: I/(1902): run() -> LogicAnalizerView - input.add(8.499996),factor[n]
04-22 18:22:21.102: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:21.112: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:21.623: I/(1902): run() -> LogicAnalizerView
04-22 18:22:21.623: I/(1902): run() -> LogicAnalizerView - input.add(8.599997),factor[n]
04-22 18:22:21.623: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:21.623: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:22.152: I/(1902): run() -> LogicAnalizerView
04-22 18:22:22.161: I/(1902): run() -> LogicAnalizerView - input.add(8.699997),factor[n]
04-22 18:22:22.173: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:22.182: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:22.711: I/(1902): run() -> LogicAnalizerView
04-22 18:22:22.761: I/(1902): run() -> LogicAnalizerView - input.add(8.799997),factor[n]
04-22 18:22:22.761: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:22.761: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:23.295: I/(1902): run() -> LogicAnalizerView
04-22 18:22:23.295: I/(1902): run() -> LogicAnalizerView - input.add(8.899998),factor[n]
04-22 18:22:23.314: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:23.314: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:23.884: I/(1902): run() -> LogicAnalizerView
04-22 18:22:23.884: I/(1902): run() -> LogicAnalizerView - input.add(8.999998),factor[n]
04-22 18:22:23.884: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:23.884: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:24.383: I/(1902): run() -> LogicAnalizerView
04-22 18:22:24.391: I/(1902): run() -> LogicAnalizerView - input.add(9.099998),factor[n]
04-22 18:22:24.391: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:24.391: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:24.901: I/(1902): run() -> LogicAnalizerView
04-22 18:22:24.901: I/(1902): run() -> LogicAnalizerView - input.add(9.199999),factor[n]
04-22 18:22:24.911: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:24.911: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:25.466: I/(1902): run() -> LogicAnalizerView
04-22 18:22:25.491: I/(1902): run() -> LogicAnalizerView - input.add(9.299999),factor[n]
04-22 18:22:25.511: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:25.511: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:26.045: I/(1902): run() -> LogicAnalizerView
04-22 18:22:26.045: I/(1902): run() -> LogicAnalizerView - input.add(9.4),factor[n]
04-22 18:22:26.071: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:26.071: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:26.592: I/(1902): run() -> LogicAnalizerView
04-22 18:22:26.601: I/(1902): run() -> LogicAnalizerView - input.add(9.5),factor[n]
04-22 18:22:26.613: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:26.613: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:27.133: I/(1902): run() -> LogicAnalizerView
04-22 18:22:27.133: I/(1902): run() -> LogicAnalizerView - input.add(9.6),factor[n]
04-22 18:22:27.141: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:27.161: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:27.682: I/(1902): run() -> LogicAnalizerView
04-22 18:22:27.682: I/(1902): run() -> LogicAnalizerView - input.add(9.700001),factor[n]
04-22 18:22:27.691: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:27.691: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:28.217: I/(1902): run() -> LogicAnalizerView
04-22 18:22:28.217: I/(1902): run() -> LogicAnalizerView - input.add(9.800001),factor[n]
04-22 18:22:28.221: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:28.231: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:28.779: I/(1902): run() -> LogicAnalizerView
04-22 18:22:28.781: I/(1902): run() -> LogicAnalizerView - input.add(9.900002),factor[n]
04-22 18:22:28.791: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:28.801: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:29.320: I/(1902): run() -> LogicAnalizerView
04-22 18:22:29.321: I/(1902): run() -> LogicAnalizerView - input.add(10.000002),factor[n]
04-22 18:22:29.321: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:29.331: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:29.882: I/(1902): run() -> LogicAnalizerView
04-22 18:22:29.882: I/(1902): run() -> LogicAnalizerView - input.add(10.100002),factor[n]
04-22 18:22:29.882: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:29.882: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:30.410: I/(1902): run() -> LogicAnalizerView
04-22 18:22:30.411: I/(1902): run() -> LogicAnalizerView - input.add(10.200003),factor[n]
04-22 18:22:30.411: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:30.411: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:30.931: I/(1902): run() -> LogicAnalizerView
04-22 18:22:30.931: I/(1902): run() -> LogicAnalizerView - input.add(10.300003),factor[n]
04-22 18:22:30.931: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:30.931: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:31.464: I/(1902): run() -> LogicAnalizerView
04-22 18:22:31.464: I/(1902): run() -> LogicAnalizerView - input.add(10.400003),factor[n]
04-22 18:22:31.464: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:31.464: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:32.020: I/(1902): run() -> LogicAnalizerView
04-22 18:22:32.021: I/(1902): run() -> LogicAnalizerView - input.add(10.500004),factor[n]
04-22 18:22:32.021: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:32.021: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:32.570: I/(1902): run() -> LogicAnalizerView
04-22 18:22:32.570: I/(1902): run() -> LogicAnalizerView - input.add(10.600004),factor[n]
04-22 18:22:32.570: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:32.570: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:33.094: I/(1902): run() -> LogicAnalizerView
04-22 18:22:33.094: I/(1902): run() -> LogicAnalizerView - input.add(10.700005),factor[n]
04-22 18:22:33.094: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:33.094: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:33.636: I/(1902): run() -> LogicAnalizerView
04-22 18:22:33.636: I/(1902): run() -> LogicAnalizerView - input.add(10.800005),factor[n]
04-22 18:22:33.636: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:33.661: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:34.192: I/(1902): run() -> LogicAnalizerView
04-22 18:22:34.192: I/(1902): run() -> LogicAnalizerView - input.add(10.900005),factor[n]
04-22 18:22:34.192: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:34.192: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:34.743: I/(1902): run() -> LogicAnalizerView
04-22 18:22:34.743: I/(1902): run() -> LogicAnalizerView - input.add(11.000006),factor[n]
04-22 18:22:34.743: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:34.743: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:35.271: I/(1902): run() -> LogicAnalizerView
04-22 18:22:35.271: I/(1902): run() -> LogicAnalizerView - input.add(11.100006),factor[n]
04-22 18:22:35.271: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:35.271: I/(1902): run() -> LogicAnalizerView - Thread.sleep()
04-22 18:22:35.803: I/(1902): run() -> LogicAnalizerView
04-22 18:22:35.803: I/(1902): run() -> LogicAnalizerView - input.add(11.2000065),factor[n]
04-22 18:22:35.811: I/(1902): run() -> LogicAnalizerView - mView.repaint()
04-22 18:22:35.811: I/(1902): run() -> LogicAnalizerView - Thread.sleep()

据我所知，我认为问题出在 ConcurrentModificationException 上，我已经对此进行了调查，但我无法确定：/。

http://developer.android.com/reference/java/util/ConcurrentModificationException.html http://developer.android.com/reference/java/util/Collection.html

这是我的一段 Java 代码，其中图表被重绘：

    //onResume() se llama al resumir la Activity y tambien al crearse la Activity
    @Override
    protected void onResume() {
        super.onResume();
        actionBar.setSelectedNavigationItem(2);     //seleccion el item 0 (LC)
        //Creo el Thread y lo inicio
        Running = true;
        myThread = new Thread(this);
        myThread.start();
    }

    //onPause() se llama cuando se pausa la Activity y tambien antes de su destruccion
    @Override
    protected void onPause() {
        super.onPause();
        //destruyo el Thread
        Running = false;
        try {
            myThread.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        myThread = null;    //pongo el Thread como null para no provocar errores
    }

    @Override
    public void run() {

        while(Running){

            int[] factor = {0, 2, 4, 6}; 

            if(DEBUG) Log.i(TAG, "run() -> LogicAnalizerView");

            data = USBMulti.getLogicAnalizerData();
            for(int n = 0; n < 4; ++n){
                if(bitTest(data,n)) factor[n] += 1;
            }

            if(DEBUG) Log.i(TAG, "run() -> LogicAnalizerView - input.add(" + time + "),factor[n]");
            input1.add(time,factor[0]);
            input2.add(time,factor[1]);
            input3.add(time,factor[2]);
            input4.add(time,factor[3]);

            if(DEBUG) Log.i(TAG, "run() -> LogicAnalizerView - mView.repaint()");
            mView.repaint();    // Redibujo el grafico
            time += 0.1;

            if(DEBUG) Log.i(TAG, "run() -> LogicAnalizerView - Thread.sleep()");

            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }

    }

谢谢：）

score 1 · Accepted Answer

好的，我找到了解决方案。问题是我在一个不是 UI 线程的线程中更新 UI，所以我必须使用下面的处理程序并将修改 UI 的代码放在处理程序中，我从我的 run() 方法调用处理程序：

uiCallback.sendEmptyMessage(0);

处理程序称为 uiCallback ，我以这种方式定义处理程序：

private Handler uiCallback = new Handler () {
    public void handleMessage (Message msg) {
        if (DEBUG) Log.i(TAG, "run() -> Handler");
        int[] factor = {0, 2, 4, 6};

        data = USBMulti.getLogicAnalizerData();
        for(int n = 0; n < 4; ++n) {
            if(bitTest(data,n)) factor[n] += 1;
        }

        input1.add(time,factor[0]);
        input2.add(time,factor[1]);
        input3.add(time,factor[2]);
        input4.add(time,factor[3]);

        if (DEBUG) Log.i(TAG, "run() -> LogicAnalizerView - mView.repaint()");
        if (mView != null) {
            mView.repaint(); // Redibujo el grafico
        }
        time += 0.1;
    }
};

所以我在 UI Thread 上重新绘制了图表，它工作得很好:)。

谢谢：）

score 0 · Accepted Answer

在我看来，您正在调用.add您的数据集，同时achartengine正在迭代同一数据集。

我不是 100% 确定重绘是如何工作的，但如果它在另一个线程中启动，您可能需要某种方式进行同步，以便它不会在您修改它的同时读取您的数据集。

不确切知道如何做到这一点，但我希望这能为您指明正确的方向。

android - 为什么我在运行我的应用程序一段时间后得到 ConcurrentModificationException？

2 回答 2

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