Android GoogleMaps V2 MarkerDemo IllegalStateException没有包括点
我正在为GoogleMaps V2创建MarkerDemo的自定义实现。 我有一个奇怪的错误，我将LatLng值提供给LatLngBounds.Builder实例，然后将其作为变量传递给.build。 当我通过Eclipse在调试模式下运行应用程序时，Map会加载。 当我通过Eclipse正常运行时，会抛出一个带有“no included points”的IllegalStateException作为消息。 有人可以帮忙吗？
这是一些协助的代码。
public class MyActivity extends android.support.v4.app.FragmentActivity implements OnMarkerClickListener, OnInfoWindowClickListener, OnMarkerDragListener { private HashMap<DataItem, ArrayList> mUserLocations = new HashMap<DataItem, ArrayList>(); private ArrayList mFeedData; private NetworkingHandler mHandler = new NetworkingHandler("tag"); private GoogleMap mMap; private final String DOWNLOAD_USER_LOCATIONS_URL = "http://www.myfeedurllocation.com/page.php"; @Override public void onCreate(Bundle savedBundleInstance) { super.onCreate(savedBundleInstance); setContentView(R.layout.activity_myactivitylayout); downloadUserLocations(); setUpMapIfNeeded(); } @Override protected void onResume() { super.onResume(); setUpMapIfNeeded(); } private void setUpMapIfNeeded() { // Do a null check to confirm that we have not already instantiated the // map. if (mMap == null) { // Try to obtain the map from the SupportMapFragment. mMap = ((SupportMapFragment) getSupportFragmentManager() .findFragmentById(R.id.map)).getMap(); // Check if we were successful in obtaining the map. if (mMap != null) { setUpMap(); } } } private void setUpMap() { // Hide the zoom controls as the button panel will cover it. mMap.getUiSettings().setZoomControlsEnabled(false); mMap.getUiSettings().setRotateGesturesEnabled(true); mMap.getUiSettings().setCompassEnabled(true); // Add lots of markers to the map. addMarkersToMap(); // Setting an info window adapter allows us to change the both the // contents and look of the // info window. mMap.setInfoWindowAdapter(new CustomInfoWindowAdapter()); // Set listeners for marker events. See the bottom of this class for // their behavior. mMap.setOnMarkerClickListener(this); mMap.setOnInfoWindowClickListener(this); mMap.setOnMarkerDragListener(this); // Pan to see all markers in view. // Cannot zoom to bounds until the map has a size. final View mapView = getSupportFragmentManager().findFragmentById( R.id.map).getView(); if (mapView.getViewTreeObserver().isAlive()) { mapView.getViewTreeObserver().addOnGlobalLayoutListener( new OnGlobalLayoutListener() { @SuppressLint("NewApi") // We check which build version we are using. @Override public void onGlobalLayout() { LatLngBounds.Builder bounds = new LatLngBounds.Builder(); for (DataItem location : mUserLocations.keySet()) { bounds.include(new LatLng( Double.parseDouble(location.mData .get("latitude")), Double .parseDouble(location.mData .get("longitude")))); } mapView.getViewTreeObserver() .removeGlobalOnLayoutListener(this); mMap.moveCamera(CameraUpdateFactory.newLatLngBounds( bounds.build(), 80)); } }); } } private void addMarkersToMap() { for (DataItem location : mUserLocations.keySet()) { StringBuilder stringBuilder = new StringBuilder(); for (DataItem user : mUserLocations.get(location)) { stringBuilder.append("\n" + user.mData.get("textToAdd")); } mMap.addMarker(new MarkerOptions() .position( new LatLng(Double.parseDouble(location.mData .get("latitude")), Double .parseDouble(location.mData.get("longitude")))) .title(location.mData.get("textToAdd")) .snippet(stringBuilder.toString()) .icon( BitmapDescriptorFactory .defaultMarker(BitmapDescriptorFactory.HUE_RED))); } } private void downloadUserLocations() { Runnable r = new Runnable() { @Override public void run() { try { mFeedData = mHandler .returnDataArrayList(DOWNLOAD_USER_LOCATIONS_URL); for (DataItem item : mFeedData) { // create location DataItem location = new DataItem(); location.mTags.add("locationText1"); location.mTags.add("latitude"); location.mTags.add("longitude"); location.mData.put("locationText1", item.mData.get("locationText1")); location.mData.put("latitude", item.mData.get("latitude")); location.mData.put("longitude", item.mData.get("longitude")); // create user DataItem user = new DataItem(); user.mTags.add("userText1"); user.mTags.add("userText2"); user.mData .put("userText1", item.mData.get("userText1")); user.mData .put("userText2", item.mData.get("userText2")); if (mUserLocations.keySet().contains(location)) { mUserLocations.get(location).add(user); } else { mUserLocations.put(location, new ArrayList()); mUserLocations.get(location).add(user); } } } catch (MalformedURLException e) { e.printStackTrace(); } catch (ParserConfigurationException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }; new Thread(r).start(); } @Override public void onMarkerDrag(Marker arg0) {} @Override public void onMarkerDragEnd(Marker arg0) {} @Override public void onMarkerDragStart(Marker arg0) {} @Override public void onInfoWindowClick(Marker arg0) {} @Override public boolean onMarkerClick(Marker arg0) { return false; } class CustomInfoWindowAdapter implements InfoWindowAdapter { private final RadioGroup mOptions; // These a both viewgroups containing an ImageView with id "badge" and // two TextViews with id // "title" and "snippet". private final View mWindow; private final View mContents; CustomInfoWindowAdapter() { mWindow = getLayoutInflater().inflate(R.layout.custom_info_window, null); mContents = getLayoutInflater().inflate( R.layout.custom_info_contents, null); mOptions = (RadioGroup) findViewById(R.id.custom_info_window_options); } @Override public View getInfoWindow(Marker marker) { if (mOptions.getCheckedRadioButtonId() != R.id.custom_info_window) { // This means that getInfoContents will be called. return null; } render(marker, mWindow); return mWindow; } @Override public View getInfoContents(Marker marker) { if (mOptions.getCheckedRadioButtonId() != R.id.custom_info_contents) { // This means that the default info contents will be used. return null; } render(marker, mContents); return mContents; } private void render(Marker marker, View view) { int badge = R.drawable.map_pin; // Use the equals() method on a Marker to check for equals. Do not // use ==. ((ImageView) view.findViewById(R.id.badge)).setImageResource(badge); String title = marker.getTitle(); TextView titleUi = ((TextView) view.findViewById(R.id.title)); if (title != null) { // Spannable string allows us to edit the formatting of the // text. SpannableString titleText = new SpannableString(title); titleText.setSpan(new ForegroundColorSpan(Color.RED), 0, titleText.length(), 0); titleUi.setText(titleText); } else { titleUi.setText(""); } String snippet = marker.getSnippet(); TextView snippetUi = ((TextView) view.findViewById(R.id.snippet)); if (snippet != null) { SpannableString snippetText = new SpannableString(snippet); snippetText.setSpan(new ForegroundColorSpan(Color.MAGENTA), 0, 10, 0); snippetText.setSpan(new ForegroundColorSpan(Color.BLUE), 12, 21, 0); snippetUi.setText(snippetText); } else { snippetUi.setText(""); } } } } 这是我的堆栈跟踪。
02-14 15:23:50.219: E/AndroidRuntime(8952): FATAL EXCEPTION: main 02-14 15:23:50.219: E/AndroidRuntime(8952): java.lang.IllegalStateException: no included points 02-14 15:23:50.219: E/AndroidRuntime(8952): at com.google.android.gms.internal.at.a(Unknown Source) 02-14 15:23:50.219: E/AndroidRuntime(8952): at com.google.android.gms.maps.model.LatLngBounds$Builder.build(Unknown Source) 02-14 15:23:50.219: E/AndroidRuntime(8952): at com.mypackage.MyActivity$1.onGlobalLayout(MyActivity.java:109) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.ViewTreeObserver.dispatchOnGlobalLayout(ViewTreeObserver.java:682) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1850) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1112) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4472) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.Choreographer.doCallbacks(Choreographer.java:555) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.Choreographer.doFrame(Choreographer.java:525) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.os.Handler.handleCallback(Handler.java:615) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.os.Handler.dispatchMessage(Handler.java:92) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.os.Looper.loop(Looper.java:137) 02-14 15:23:50.219: E/AndroidRuntime(8952): at android.app.ActivityThread.main(ActivityThread.java:4898) 02-14 15:23:50.219: E/AndroidRuntime(8952): at java.lang.reflect.Method.invokeNative(Native Method) 02-14 15:23:50.219: E/AndroidRuntime(8952): at java.lang.reflect.Method.invoke(Method.java:511) 02-14 15:23:50.219: E/AndroidRuntime(8952): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006) 02-14 15:23:50.219: E/AndroidRuntime(8952): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773) 02-14 15:23:50.219: E/AndroidRuntime(8952): at dalvik.system.NativeStart.main(Native Method)
不要打扰建设者。
LatLngBounds mapBounds; for (DataItem location : mUserLocations.keySet()) { if (mapBounds==null) { LatLng point = new LatLng(Double.parseDouble(location.mData.get("latitude")), Double.parseDouble(location.mData.get("longitude"))) mapBounds =new LatLngBounds(point, point); } else { mapBounds = mapBounds.including(new LatLng(Double.parseDouble(location.mData.get("latitude")), Double.parseDouble(location.mData.get("longitude")))); } }
我犯了同样的错误。
在Api中，它解释了这个：
public LatLngBounds（LatLng southwest，LatLng northeast）：IllegalArgumentException如果东北角的纬度低于西南角的纬度。
使用以下代码，当计算边界的列表为空时启动exception：
LatLngBounds.Builder builder = LatLngBounds.builder(); for(ModelLatLngDisplay p: list){ builder = builder.include(p.latLng); } return builder.build();