The label parameter should be set so this animate*AsState can be better

本文介绍了如何在动画中设置label参数,以便更好地在AnimationPreview中检查状态。通过示例展示了如何为animateColor设置状态条件,同时提及了设备上的运行按钮功能。

The label parameter should be set so this animate*AsState can be better inspected in the Animation Preview.

Compose提示:

The label parameter should be set so this animate*AsState can be better inspected in the Animation Preview. 

需要添加label标签:

label = "inspection label"

完整:

        animateColorAsState(targetValue = if (enable.value)  Color.Blue else Color.Yellow,
            label = "inspection label"
        )

最终效果:左侧有个运行按钮,可以直接运行到设备上。

The error 'The argument type 'Animation<dynamic>?' can't be assigned to the parameter type 'Animation<double>'' occurs because you are trying to pass an `Animation` of a dynamic type (which can hold any type) to a parameter that expects an `Animation` of a specific type, in this case, `double`. Here are some ways to solve this issue: ### 1. Type casting If you are sure that the `Animation<dynamic>` actually holds a `double` value, you can cast it to `Animation<double>`. ```dart Animation<dynamic>? dynamicAnimation; Animation<double> doubleAnimation = dynamicAnimation as Animation<double>; ``` However, this approach is risky. If the `dynamicAnimation` does not actually hold a `double` value, it will result in a runtime error. So, it's better to use a more cautious approach. ### 2. Use a type check and conversion You can check if the `Animation<dynamic>` holds a `double` value and then create a new `Animation<double>` from it. ```dart Animation<dynamic>? dynamicAnimation; Animation<double>? doubleAnimation; if (dynamicAnimation != null) { if (dynamicAnimation.value is double) { doubleAnimation = Tween<double>( begin: dynamicAnimation.value as double, end: dynamicAnimation.value as double, ).animate(dynamicAnimation.controller); } } ``` ### 3. Ensure correct type when creating the animation Make sure that when you create the animation, you specify the correct type as `double`. For example: ```dart AnimationController controller = AnimationController( duration: const Duration(seconds: 1), vsync: this, ); Animation<double> doubleAnimation = Tween<double>(begin: 0.0, end: 1.0).animate(controller); ```
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