如何在本机反应中从纬度，长数组映射多个标记

分类：编程问答

如何解决如何在本机反应中从纬度，长数组映射多个标记

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，我试过了

{LatLongArray.map((LatLongArray,index) => {

         return (
          <MapView.Marker
            key = {index}
            coordinate = {{ LatLongArray}}
            >

          </MapView.Marker>

         );

       })}

但我得到的错误是 lat 和 lon 值未定义 我还收到错误，每个子组件都应该有一个唯一的键。

循环在 MapView 组件内

感谢您的帮助。

这是错误和堆栈跟踪。

[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)

解决方法

我解决了这个问题很简单

由于 react-native-maps api 将“纬度”和“经度”作为数组中的键。

我替换了所有的“纬度”和“经度”，它绘制了所有的机场。

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