Utilizing shadows in React Native applications

When I try to add shadows to components, I receive an error message.

View #128489 of type ABI49_0_0RCTView has a shadow set but cannot calculate shadow efficiently. To resolve this, consider setting a background color or applying the shadow to a more specific component.

In my CSS, I have specified where the shadows should be applied. I prefer to keep the SHADOW styles separate so that I can easily change background colors.


const SHADOW = {
    // For iOS
    light: {
      shadowColor: COLORS.black,
      shadowOffset: {
        width: 0,
        height: 2,
      },
      shadowOpacity: 0.1,
      shadowRadius: 4,
    },
    medium: {
      shadowColor: COLORS.black,
      shadowOffset: {
        width: 0,
        height: 4,
      },
      shadowOpacity: 0.2,
      shadowRadius: 2,
    },
    // For Android
    android: {
      elevation: 5,
    },
  };

const BUTTON = {
    padding: 15,
    backgroundColor: COLORS.button,
    borderRadius: 10,
    marginBottom: 10,
    alignItems: 'center',
    ...Platform.select({
      ios: {
        ...SHADOW.medium,
      },
      android: {
        ...SHADOW.android,
      },
    }),
}

const CARD = {
  padding: 15,
  backgroundColor: 'rgba(48, 48, 48, 1)',
  borderRadius: 8,
  marginBottom: 10,
  alignItems: 'center',
  ...Platform.select({
    ios: {
      ...SHADOW.medium,
    },
    android: {
      ...SHADOW.android,
    },
  }),
}

I was hoping to avoid getting warning errors with this setup.

Answer №1

Successfully resolved the problem by setting a solid backgroundColor for CARD. It was discovered that adding opacity to the background color would trigger a warning message.

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