What is the alternative in harmonyos for ValueAnimator.ofInt(int... values)?

user_16536010 0
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I am creating a custom component in HarmonyOS using Java SDK. Where I have to work on Animation for animate component. I have to animates component between int values. For that I need the instance of AnimatorValue(In Android ValueAnimator).

In Android we can create instance of ValueAnimator and pass int values like this:

ValueAnimator finalPositionAnimator = ValueAnimator.ofInt(10, 100);

but, In HMOS I am able to create instance of AnimatorValue using below code:

AnimatorValue finalPositionAnimator = new AnimatorValue();

but, I am not able to set int values.

harmonyos huawei-developers huawei-mobile-services android java
2 Answers

Currently, there is no similar method in HarmonyOS. You can try the following method to set the integer:

AnimatorValue animatorValue = new AnimatorValue();
animatorValue.setDuration(3000);
animatorValue.setValueUpdateListener((AnimatorValue animation, float value) -> {
    int finalValue = (int) (value * 90 + 10);
});
animatorValue.start();
user_11507120

I did as follow.

First create getAnimatedValue() util function as follow.

public static float getAnimatedValue(float fraction, int... values) {
        if (values == null || values.length == 0) {
            return 0;
        }
        if (values.length == 1) {
            return values[0] * fraction;
        } else {
            if (fraction == 1) {
                return values[values.length - 1];
            }
            float oneFraction = 1f / (values.length - 1);
            float offFraction = 0;
            for (int i = 0; i < values.length - 1; i++) {
                if (offFraction + oneFraction >= fraction) {
                    return values[i] + (fraction - offFraction) * (values.length - 1) * (values[i + 1] - values[i]);
                }
                offFraction += oneFraction;
            }
        }
        return 0;
    }

Then, you can use above method like this way

AnimatorValue animatorValue = new AnimatorValue();
animatorValue.setValueUpdateListener((animatorValue, v) -> {
         float value = AnimationUtils.getAnimatedValue(v, 10, 100);
});

You can see more methods similar like ofInt() under AnimatorValue here

user_165360100
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