Question

我希望更改ObjectAnimator的值，AnimatorSet是<set xmlns:android="http://schemas.android.com/apk/res/android"> <objectAnimator android:valueFrom="1.0" android:valueTo="0.0" android:propertyName="alpha" android:duration="0" /> <objectAnimator android:valueFrom="-170"  android:valueTo="0" android:propertyName="rotationY" android:duration="@integer/anim_length" /> <objectAnimator android:valueFrom="0.0" android:valueTo="1.0" android:propertyName="alpha" android:startOffset="@integer/anim_length_half" android:duration="0" /> </set>的一部分，在动画目录的指定文件中以Xml编码。

我不想用Java代码替换Xml文件，我也不想将其拆分。

有可能吗？

示例代码：

    public static string ToCamelCase(string s)
    {
        if (string.IsNullOrEmpty(s) || !char.IsUpper(s[0]))
        {
            return s;
        }

        char[] chars = s.ToCharArray();

        for (int i = 0; i < chars.Length; i++)
        {
            if (i == 1 && !char.IsUpper(chars[i]))
            {
                break;
            }

            bool hasNext = (i + 1 < chars.Length);
            if (i > 0 && hasNext && !char.IsUpper(chars[i + 1]))
            {
                // if the next character is a space, which is not considered uppercase 
                // (otherwise we wouldn't be here...)
                // we want to ensure that the following:
                // 'FOO bar' is rewritten as 'foo bar', and not as 'foO bar'
                // The code was written in such a way that the first word in uppercase
                // ends when if finds an uppercase letter followed by a lowercase letter.
                // now a ' ' (space, (char)32) is considered not upper
                // but in that case we still want our current character to become lowercase
                if (char.IsSeparator(chars[i + 1]))
                {
                    chars[i] = ToLower(chars[i]);
                }

                break;
            }

            chars[i] = ToLower(chars[i]);
        }

        return new string(chars);
    }

Answer 1

这是可能的。

    AnimatorSet animatorSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_yours);

    List<Animator> animators = animatorSet.getChildAnimations();
    for (int i = 0; i < animators.size(); i++) {
        Animator animator = animators.get(i);
        if (animator instanceof ObjectAnimator) {
            ObjectAnimator objectAnimator = (ObjectAnimator) animator;
            if ("rotationY".equals(objectAnimator.getPropertyName())) {
                float fromValue = -100;
                float toValue = 0;
                objectAnimator.setFloatValues(fromValue, toValue);
            }
        }
    }
    // and you use changed AnimoatorSet..

编程中AnimatorSet的ObjectAnimator中的Chage值

1 个答案: