【发布时间】：2021-02-01 16:20:09
【问题描述】：
为了得到坐标数组，我使用了here的答案
它允许我用 {"lat":any "lon":any} 创建一个数组
我正在尝试制作一个可以标记每个纬度和经度的循环，我尝试了这个
{LatLongArray.map((LatLongArray,index) => {
return (
<MapView.Marker
key = {index}
coordinate = {{ LatLongArray}}
>
</MapView.Marker>
);
})}
但是我得到了纬度和经度值未定义的错误 我还收到每个子组件应该有一个唯一键的错误。
循环在 MapView 组件内
感谢您的帮助。
这里是错误和堆栈跟踪。
[Mon Feb 01 2021 11:38:27.890] ERROR Warning: Failed prop type: The prop `coordinate.latitude` is marked as required in `MapMarker`, but its value is `undefined`.
MapMarker@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:127169:36
in AirportMap (at HomeScreen.js:16)
in RCTView (at View.js:34)
in View (at SafeAreaView.js:41)
in ForwardRef(SafeAreaView) (at HomeScreen.js:15)
in HomeScreen (at SceneView.tsx:122)
in StaticContainer
in StaticContainer (at SceneView.tsx:115)
in EnsureSingleNavigator (at SceneView.tsx:114)
in SceneView (at useDescriptors.tsx:153)
in RCTView (at View.js:34)
in View (at CardContainer.tsx:245)
in RCTView (at View.js:34)
in View (at CardContainer.tsx:244)
in RCTView (at View.js:34)
in View (at CardSheet.tsx:33)
in ForwardRef(CardSheet) (at Card.tsx:573)
in RCTView (at View.js:34)
in View (at createAnimatedComponent.js:165)
in AnimatedComponent (at createAnimatedComponent.js:215)
in ForwardRef(AnimatedComponentWrapper) (at Card.tsx:555)
in PanGestureHandler (at GestureHandlerNative.tsx:13)
in PanGestureHandler (at Card.tsx:549)
in RCTView (at View.js:34)
in View (at createAnimatedComponent.js:165)
in AnimatedComponent (at createAnimatedComponent.js:215)
in ForwardRef(AnimatedComponentWrapper) (at Card.tsx:544)
in RCTView (at View.js:34)
in View (at Card.tsx:538)
in Card (at CardContainer.tsx:206)
in CardContainer (at CardStack.tsx:620)
in RCTView (at View.js:34)
in View (at Screens.tsx:84)
in MaybeScreen (at CardStack.tsx:613)
in RCTView (at View.js:34)
in View (at Screens.tsx:54)
in MaybeScreenContainer (at CardStack.tsx:495)
in CardStack (at StackView.tsx:462)
in KeyboardManager (at StackView.tsx:458)
in SafeAreaProviderCompat (at StackView.tsx:455)
in RCTView (at View.js:34)
in View (at GestureHandlerRootView.android.js:26)
in GestureHandlerRootView (at StackView.tsx:454)
in StackView (at createStackNavigator.tsx:87)
in StackNavigator (at DrawerNavigationRoutes.js:23)
in homeScreenStack (at SceneView.tsx:122)
in StaticContainer
in StaticContainer (at SceneView.tsx:115)
in EnsureSingleNavigator (at SceneView.tsx:114)
in SceneView (at useDescriptors.tsx:153)
in RCTView (at View.js:34)
in View (at ResourceSavingScene.tsx:68)
in RCTView (at View.js:34)
in View (at ResourceSavingScene.tsx:63)
in ResourceSavingScene (at DrawerView.tsx:183)
in RCTView (at View.js:34)
in View (at src/index.native.js:123)
in ScreenContainer (at DrawerView.tsx:162)
in RCTView (at View.js:34)
in View (at Drawer.tsx:645)
in RCTView (at View.js:34)
in View (at createAnimatedComponent.js:240)
in AnimatedComponent(View) (at Drawer.tsx:638)
in RCTView (at View.js:34)
in View (at createAnimatedComponent.js:240)
in AnimatedComponent(View) (at Drawer.tsx:628)
in PanGestureHandler (at GestureHandlerNative.tsx:13)
in PanGestureHandler (at Drawer.tsx:619)
in DrawerView (at DrawerView.tsx:215)
in SafeAreaProviderCompat (at DrawerView.tsx:213)
in RCTView (at View.js:34)
in View (at GestureHandlerRootView.android.js:26)
in GestureHandlerRootView (at DrawerView.tsx:212)
in DrawerView (at createDrawerNavigator.tsx:47)
in DrawerNavigator (at DrawerNavigationRoutes.js:76)
in DrawerNavigatorRoutes (at SceneView.tsx:122)
in StaticContainer
in StaticContainer (at SceneView.tsx:115)
in EnsureSingleNavigator (at SceneView.tsx:114)
in SceneView (at useDescriptors.tsx:153)
in RCTView (at View.js:34)
in View (at CardContainer.tsx:245)
in RCTView (at View.js:34)
in View (at CardContainer.tsx:244)
in RCTView (at View.js:34)
in View (at CardSheet.tsx:33)
in ForwardRef(CardSheet) (at Card.tsx:573)
in RCTView (at View.js:34)
in View (at createAnimatedComponent.js:165)
in AnimatedComponent (at createAnimatedComponent.js:215)
in ForwardRef(AnimatedComponentWrapper) (at Card.tsx:555)
in PanGestureHandler (at GestureHandlerNative.tsx:13)
in PanGestureHandler (at Card.tsx:549)
in RCTView (at View.js:34)
in View (at createAnimatedComponent.js:165)
in AnimatedComponent (at createAnimatedComponent.js:215)
in ForwardRef(AnimatedComponentWrapper) (at Card.tsx:544)
in RCTView (at View.js:34)
in View (at Card.tsx:538)
in Card (at CardContainer.tsx:206)
in CardContainer (at CardStack.tsx:620)
in RCTView (at View.js:34)
in View (at Screens.tsx:84)
in MaybeScreen (at CardStack.tsx:613)
in RCTView (at View.js:34)
in View (at Screens.tsx:54)
in MaybeScreenContainer (at CardStack.tsx:495)
in CardStack (at StackView.tsx:462)
in KeyboardManager (at StackView.tsx:458)
in RNCSafeAreaProvider (at SafeAreaContext.tsx:74)
in SafeAreaProvider (at SafeAreaProviderCompat.tsx:42)
in SafeAreaProviderCompat (at StackView.tsx:455)
in GestureHandlerRootView (at GestureHandlerRootView.android.js:31)
in GestureHandlerRootView (at StackView.tsx:454)
in StackView (at createStackNavigator.tsx:87)
in StackNavigator (at App.js:44)
in EnsureSingleNavigator (at BaseNavigationContainer.tsx:409)
in ForwardRef(BaseNavigationContainer) (at NavigationContainer.tsx:91)
in ThemeProvider (at NavigationContainer.tsx:90)
in ForwardRef(NavigationContainer) (at App.js:42)
in App (at renderApplication.js:45)
in RCTView (at View.js:34)
in View (at AppContainer.js:106)
in RCTView (at View.js:34)
in View (at AppContainer.js:132)
in AppContainer (at renderApplication.js:39)
【问题讨论】：
-
我找不到这个
google-maps-markers包来检查他们的 API，但我认为coordinate道具可能不会使用具有单个LatLongArray属性的对象。尝试只传递LatLongArray对象，即coordinate={LatLongArray}。这只会传递具有所需lat/lon属性的LatLongArray对象。 -
同样的错误失败的道具类型值未定义，
-
您能否提供您正在使用的 MapView 组件的链接，以便我们验证它的 API 以及标记如何与它一起使用？是github.com/react-native-maps/react-native-maps吗？
-
是的，它是 react-native-maps 将删除 google-maps-markers 标签。也许是因为它是“纬度”而不是“纬度”？
-
对，所以看起来
Marker组件使用了coordinate属性，但它应该是带有latitude和longitude键的LatLng对象。 github.com/react-native-maps/react-native-maps/blob/master/docs/…您能否将完整的错误消息和堆栈跟踪添加到您的问题中？
标签： javascript arrays react-native react-native-maps