Android-如何在矢量图像上实现中心比例动画

Question

我最近开始涉足矢量图像和动画.但是,一旦路径变形动画完成,我希望能够在所有方向上均匀地缩放我的图像.

我尝试过在任何地方应用pivotX和Y但它似乎没有什么区别.

我怎样才能实现中心规模,而不仅仅是从左到右扩展？

test_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_gravity="center"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/test_image"
        android:layout_gravity="center"
        android:src="@drawable/animated_logo"
        android:layout_width="200dp"
        android:layout_height="200dp" />

</FrameLayout>

animated_logo.xml

<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/closed_logo" >
    <target
        android:animation="@anim/scale"
        android:name="logo"/>
</animated-vector>

scale.anim

<set xmlns:android="http://schemas.android.com/apk/res/android">
<objectAnimator
    android:duration="1500"
    android:propertyName="scaleX"
    android:valueFrom="1.0"
    android:valueTo="10"
    android:valueType="floatType"/>
<objectAnimator
    android:duration="1500"
    android:propertyName="scaleY"
    android:valueFrom="1.0"
    android:valueTo="10"
    android:valueType="floatType"/>

closed_logo.xml

    <?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:viewportWidth="75"
    android:viewportHeight="75"
    android:width="1000dp"
    android:height="1000dp">
    <group android:name="logo">
        <path
            android:name="box"
            android:fillColor="#DADADA"
            android:pathData="M65.5,54.4L11.1,65.5L0,11.1L54.4,0L65.5,54.4z"/>


    <path
            android:name="bottom_left"
            android:fillColor="#47A89C"
            android:pathData="M 7.1,22.2 l 15.2,36.0 l 10.4,-25.6 L 32.699997,32.6 L 7.1,22.2 L 7.1,22.2z" />

        <path
            android:name="top_left"
            android:fillColor="#564B74"
            android:pathData="M43.1,7.1L7.1,22.2l25.6,10.4L43.1,7.1z" />

        <path
            android:name="top_right"
            android:fillColor="#D2A219"
            android:pathData="M 22.3,58.2 L 58.3,43.0 l 0.0,0.0 L 32.7,32.6 L 22.3,58.2z" />

        <path
            android:name="bottom_right"
            android:fillColor="#BD6474"
            android:pathData="M 32.7,32.6 L 58.3,43.0 l 0.0,0.0 L 43.0,7.1 L 32.7,32.6z" />
    </group>
</vector>

Answer 1

我知道这个问题已经过时了,以防它对任何人都有帮助.

将pivotX和pivotY添加到要设置动画的组中.所以对于您的情况,请更改

  <group android:name="logo">

至

  <group android:name="logo" android:pivotX="37.5" android:pivotY="37.5">