Android谷歌地图,谷歌地方,北纬度超过南纬

Question

我正在使用谷歌地图并使用JSON从谷歌地方解析我的位置周围的咖啡馆.当我从当前位置95%咖啡馆开始导航到所选择的咖啡馆时,我得到了折线但是在某些情况下我得到的错误就像北纬度超过南纬和应用程序崩溃.

这是我的logcat:

07-07 18:11:46.037: E/AndroidRuntime(25854): FATAL EXCEPTION: main
07-07 18:11:46.037: E/AndroidRuntime(25854): java.lang.IllegalArgumentException: southern latitude exceeds northern latitude (30.7223365 > 30.722303)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.google.android.gms.internal.fq.a(Unknown Source)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.google.android.gms.maps.model.LatLngBounds.<init>(Unknown Source)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.google.android.gms.maps.model.LatLngBounds.<init>(Unknown Source)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.example.google_map_ex.MainActivity.findDirections(MainActivity.java:285)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.example.google_map_ex.MainActivity$JSONParse$1.onItemClick(MainActivity.java:366)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.widget.AdapterView.performItemClick(AdapterView.java:301)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.widget.AbsListView.performItemClick(AbsListView.java:1490)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.widget.AbsListView$PerformClick.run(AbsListView.java:3275)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.widget.AbsListView$1.run(AbsListView.java:4518)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.os.Handler.handleCallback(Handler.java:725)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.os.Handler.dispatchMessage(Handler.java:92)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.os.Looper.loop(Looper.java:137)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at android.app.ActivityThread.main(ActivityThread.java:5283)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at java.lang.reflect.Method.invokeNative(Native Method)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at java.lang.reflect.Method.invoke(Method.java:511)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
07-07 18:11:46.037: E/AndroidRuntime(25854):    at dalvik.system.NativeStart.main(Native Method)

Answer 1

利用LatLngBounds.Builder类使用.include()包含LatLng.它将防止此错误.

LatLngBounds.Builder builder = new LatLngBounds.Builder();
builder.include(currentLocation).include(streetLocation);

//Animate to the bounds
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngBounds(builder.build(), 100);
mMap.moveCamera(cameraUpdate);

Answer 2

在您的代码中找到这一行：

mMapView.animateCamera(CameraUpdateFactory.newLatLngBounds(new LatLngBounds(pointA, pointB), 50));

并将其更改为：

mMapView.animateCamera(CameraUpdateFactory.newLatLngBounds(new LatLngBounds(pointB, pointA), 50));

把两点调换一下，就解决了！

编辑：当然，您需要某种方法来检查是否需要切换，但这取决于您的实现和应用程序逻辑。虚拟解决方案是使用 try-catch 并在崩溃时切换点。