谷歌地图 - ArrayIndexOutOfBounds on Android Polyline draw. - google maps - ArrayIndexOutOfBounds on Android polyline draw 小贝子编程网

我正在使用谷歌地图精简模式版本，其中我在联想K50a40上绘制多边形线和标记，我收到以下错误

  **Non-fatal Exception: java.lang.ArrayIndexOutOfBoundsException: length=42; index=42**
   at maps.ah.k.a(Unknown Source:4000)
   at maps.ah.k.a(Unknown Source)
   at maps.ah.k.a(Unknown Source)
   at maps.ah.i.a(Unknown Source)
   at maps.ah.d.onDraw(Unknown Source)
   at android.view.View.draw(View.java:16457)
   at android.view.View.buildDrawingCacheImpl(View.java:15722)
   at android.view.View.buildDrawingCache(View.java:15576)
   at android.view.View.draw(View.java:16204)
   at android.view.ViewGroup.drawChild(ViewGroup.java:3746)
   at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3536)
   at android.view.View.updateDisplayListIfDirty(View.java:15402)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:3730)
   at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:3710)
   at android.view.View.updateDisplayListIfDirty(View.java:15361)
   at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:286)
   at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:292)
   at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:327)
   at android.view.ViewRootImpl.draw(ViewRootImpl.java:3024)
   at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2828)
   at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2440)
   at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1325)
   at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6741)
   at android.view.Choreographer$CallbackRecord.run(Choreographer.java:912)
   at android.view.Choreographer.doCallbacks(Choreographer.java:714)
   at android.view.Choreographer.doFrame(Choreographer.java:649)
   at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:898)
   at android.os.Handler.handleCallback(Handler.java:815)
   at android.os.Handler.dispatchMessage(Handler.java:104)
   at android.os.Looper.loop(Looper.java:207)
   at android.app.ActivityThread.main(ActivityThread.java:5769)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

以下是我在谷歌地图上绘制路线的逻辑

 public static void drawRouteIntoMap(List<? extends MapHelper> position, final GoogleMap googleMap , final boolean removeMarker) {
        /*List<MapHelper> position = new ArrayList<MapHelper>();
        for (int i = lastPosition; i < maps.size(); i++) {
            position.add(maps.get(i));
        }*/
        if (position.size() > 0 && Validator.isNotNull(googleMap)) {
           // googleMap.clear();
            final List<? extends MapHelper> tempList=new ArrayList<>(position);
            if(tempList.size()!=pointList.size()) {
                tempList.removeAll(pointList);
            }
            List<PolylineOptions> polylineOptionses = new ArrayList<PolylineOptions>();
            PolylineOptions option = null;
            Boolean lastPause = null;
            for (MapHelper map : tempList) {
                if (map.isPause()) {
                    if (Validator.isNull(lastPause) || !lastPause) {
                        option = new PolylineOptions().width(5).color(Color.rgb(255, 0, 155)).geodesic(true);
                        polylineOptionses.add(option);
                    }
                    option.add(new LatLng(map.getLatitude(), map.getLongitude()));
                } else {
                    if (Validator.isNull(lastPause) || lastPause) {
                        option = new PolylineOptions().width(5).color(Color.rgb(0, 179, 253)).geodesic(true);
                        polylineOptionses.add(option);
                    }
                    option.add(new LatLng(map.getLatitude(), map.getLongitude()));
                }
                lastPause = map.isPause();
            }
            for (PolylineOptions options : polylineOptionses) {
                googleMap.addPolyline(options);
            }
            if(Validator.isNotNull(option)) {
                List<LatLng> points = option.getPoints();
                final LatLngBounds.Builder mapBounds = new LatLngBounds.Builder();
                for (LatLng latLng : points) {
                    mapBounds.include(latLng);
                }
                googleMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
                    @Override
                    public void onMapLoaded() {
                        if(removeMarker) {
                            if (Validator.isNotNull(endMarker)) {
                                startMarker.remove();
                                endMarker.remove();
                            }
                        }
                        LatLng startPoint = new LatLng(tempList.get(0).getLatitude(), tempList.get(0).getLongitude());
                        Marker marker1=googleMap.addMarker(new MarkerOptions().position(startPoint).title("start").icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN)));
                        LatLng endPoint = new LatLng(tempList.get(tempList.size() - 1).getLatitude(), tempList.get(tempList.size() - 1).getLongitude());
                        Marker marker2=googleMap.addMarker(new MarkerOptions().position(endPoint).title("finish").icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
                        googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(mapBounds.build(), 10));
                        googleMap.animateCamera(CameraUpdateFactory.newLatLngBounds(mapBounds.build(), 10));
                        googleMap.moveCamera(CameraUpdateFactory.zoomOut());
                        startMarker=marker1;
                        endMarker=marker2;
                    }
                });
                pointList = position;
            }
        }
    }

我

在其中进行测试的设备它只发生在联想K50A40型号中，我无法弄清楚实际原因，需要任何帮助。

为什么会崩溃？

通过查看异常，一切都表明您错误地遍历了数组（或列表）。

检查主要消息

java.lang.ArrayIndexOutOfBoundsException： length=42; index=42

弄清楚之后的内容更加棘手，主要是因为我们没有任何关于代码的信息：

   at maps.ah.k.a(Unknown Source:4000)
   at maps.ah.k.a(Unknown Source)
   at maps.ah.k.a(Unknown Source)
   at maps.ah.i.a(Unknown Source)

为什么它可以在其他一些设备上工作？

不同的

Android设备具有不同的软件基础和硬件基础（取决于制造它们的公司），因此在某些时候可以看到不同的行为。

因此，即使其他设备可以处理非致命异常，联想K50a40似乎也无法。甚至可能是联想系统设计错误，无从得知。

我该怎么办？

你无能为力。帮助您找到路径的解决方案是：

将控制台日志放置在任何可能的位置。
删除尽可能多的逻辑并一点一点地添加，直到找到破坏它的东西。
删除 java 中的forEach，并在任何可能的地方强制进行常规for (int i = 0; i < maps.size(); i++)循环，并监控 i 的值。

代码评估

也就是说，有些东西我并没有从你的代码中得到。

if (map.isPause()) {
    if (Validator.isNull(lastPause) || !lastPause) {
        option = new PolylineOptions().width(5).color(Color.rgb(255, 0, 155)).geodesic(true);
        polylineOptionses.add(option);
    }
    option.add(new LatLng(map.getLatitude(), map.getLongitude()));
} else {
    if (Validator.isNull(lastPause) || lastPause) {
        option = new PolylineOptions().width(5).color(Color.rgb(0, 179, 253)).geodesic(true);
        polylineOptionses.add(option);
    }
    option.add(new LatLng(map.getLatitude(), map.getLongitude()));
}

如果map.isPause()返回 true，Validator.isNull(lastPause) || !lastPause返回 false，会发生什么情况？

如果我理解正确，您将在空对象上运行option.add(new LatLng(map.getLatitude(), map.getLongitude()));。

这将导致空异常。

你能给出一些不是变量pointList上下文吗？

我知道这可能不是你所希望的，但我仍然希望它会有所帮助。

谷歌地图 - ArrayIndexOutOfBounds on Android Polyline draw.

为什么会崩溃？

为什么它可以在其他一些设备上工作？

我该怎么办？

代码评估

相关内容

最新更新

热门标签：