VectorDrawable不是居中对齐的

Question

我用我拥有的路径数据创建了一个VectorDrawable文件.但问题是图像没有在整个区域的中心对齐,而是创建为左上对齐.看一看:

文件:

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportHeight="24.0"
    android:viewportWidth="24.0">

    <path
        android:fillColor="@android:color/white"
        android:pathData="M7.144375,6.49965789 L13.196575,0.583973684 C13.333075,0.450552632 13.333075,0.233657895 13.196575,0.0995526316 C13.060075,-0.0331842105 12.838175,-0.0331842105 12.701675,0.0995526316 L6.649475,6.01592105 L0.596575,0.0995526316 C0.460775,-0.0331842105 0.238875,-0.0331842105 0.102375,0.0995526316 C-0.034125,0.233657895 -0.034125,0.450552632 0.102375,0.583973684 L6.154575,6.49965789 L0.102375,12.4153421 C-0.034125,12.5487632 -0.034125,12.7656579 0.102375,12.8997632 C0.170975,12.9661316 0.260575,12.9989737 0.350175,12.9989737 C0.439775,12.9989737 0.529375,12.9654474 0.597975,12.8997632 L6.650175,6.98339474 L12.702375,12.8997632 C12.770975,12.9661316 12.860575,12.9989737 12.950175,12.9989737 C13.039775,12.9989737 13.129375,12.9654474 13.197975,12.8997632 C13.334475,12.7656579 13.334475,12.5487632 13.197975,12.4153421 L7.145775,6.49965789 L7.144375,6.49965789 Z" />

</vector>

现在检查当使用app:srcCompat for imageView时它的实际外观.

有没有办法解决这个问题,因为我对VectorDrawables没有太多经验？

任何形式的帮助将不胜感激.

编辑:这是我如何使用矢量drawable.

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:srcCompat="@drawable/close_button"/>

Answer 1

您指定的向量是24x24,但路径不是那么大.如果我们实际检查它的尺寸,它的边界框坐标是:

     x: -0.034
     y: -0.033
 width: 13.369
height: 13.032

所以它只占据了左上角大约13x13的区域.

根据您的预期结果,您有几种方法可以解决此问题.

解决方案1

如果您希望将图标放大以占据整个24x24图标区域,那么更改viewportWidth和viewportHeight更合适的图标应该有效.

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportHeight="13.4"
    android:viewportWidth="13.1">

    <path
        android:fillColor="@android:color/white"
        android:pathData="M7.144375,6.49965789 L13.196575,0.583973684 C13.333075,0.450552632 13.333075,0.233657895 13.196575,0.0995526316 C13.060075,-0.0331842105 12.838175,-0.0331842105 12.701675,0.0995526316 L6.649475,6.01592105 L0.596575,0.0995526316 C0.460775,-0.0331842105 0.238875,-0.0331842105 0.102375,0.0995526316 C-0.034125,0.233657895 -0.034125,0.450552632 0.102375,0.583973684 L6.154575,6.49965789 L0.102375,12.4153421 C-0.034125,12.5487632 -0.034125,12.7656579 0.102375,12.8997632 C0.170975,12.9661316 0.260575,12.9989737 0.350175,12.9989737 C0.439775,12.9989737 0.529375,12.9654474 0.597975,12.8997632 L6.650175,6.98339474 L12.702375,12.8997632 C12.770975,12.9661316 12.860575,12.9989737 12.950175,12.9989737 C13.039775,12.9989737 13.129375,12.9654474 13.197975,12.8997632 C13.334475,12.7656579 13.334475,12.5487632 13.197975,12.4153421 L7.145775,6.49965789 L7.144375,6.49965789 Z" />

</vector>

我在这里通过改变视口来做的是告诉Android,VectorDrawable的实际内容是在(0,0)到(13.4,13.1)之间的区域.这不是确切的,但它可能足够接近.Android应该扩展该区域中的所有内容以填充24x24图标区域.

解决方案2

另一种解决方案是将路径移动到24x24视口的中心.您可以使用VectorDrawable <group>标记执行此操作.

我们需要将转换应用于移动该路径的路径,使其居中.

路径的中心现在是:

x = -0.034 + 13.369/2
  = 6.651
y = -0.033 + 13.032/2
  = 6.483

我们希望将其移至12,12.因此,我们将路径包装在一个具有适当数量translateX和translateY值的组中.

我们需要沿X轴向右移动(12 - 6.651)= 5.349,我们需要向下移动(12 - 6.483)= 5.517.

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportHeight="24"
    android:viewportWidth="24">

    <group translateX="5.349" translateY="5.517"> 
        <path
            android:fillColor="@android:color/white"
            android:pathData="M7.144375,6.49965789 L13.196575,0.583973684 C13.333075,0.450552632 13.333075,0.233657895 13.196575,0.0995526316 C13.060075,-0.0331842105 12.838175,-0.0331842105 12.701675,0.0995526316 L6.649475,6.01592105 L0.596575,0.0995526316 C0.460775,-0.0331842105 0.238875,-0.0331842105 0.102375,0.0995526316 C-0.034125,0.233657895 -0.034125,0.450552632 0.102375,0.583973684 L6.154575,6.49965789 L0.102375,12.4153421 C-0.034125,12.5487632 -0.034125,12.7656579 0.102375,12.8997632 C0.170975,12.9661316 0.260575,12.9989737 0.350175,12.9989737 C0.439775,12.9989737 0.529375,12.9654474 0.597975,12.8997632 L6.650175,6.98339474 L12.702375,12.8997632 C12.770975,12.9661316 12.860575,12.9989737 12.950175,12.9989737 C13.039775,12.9989737 13.129375,12.9654474 13.197975,12.8997632 C13.334475,12.7656579 13.334475,12.5487632 13.197975,12.4153421 L7.145775,6.49965789 L7.144375,6.49965789 Z" />
    </group>
</vector>

当然,您也可以选择将这两种方法结合起来.或者如果您需要十字架,也可以向组添加比例,不仅可以移动,还可以放大一点.

Answer 2

<group
    android:pivotX="12"
    android:pivotY="12"
    android:scaleX="0.75"
    android:scaleY="0.75">

<path
    android:fillColor="@android:color/white"
    android:pathData="M7.144375,6.49965789 L13.196575,0.583973684 C13.333075,0.450552632 13.333075,0.233657895 13.196575,0.0995526316 C13.060075,-0.0331842105 12.838175,-0.0331842105 12.701675,0.0995526316 L6.649475,6.01592105 L0.596575,0.0995526316 C0.460775,-0.0331842105 0.238875,-0.0331842105 0.102375,0.0995526316 C-0.034125,0.233657895 -0.034125,0.450552632 0.102375,0.583973684 L6.154575,6.49965789 L0.102375,12.4153421 C-0.034125,12.5487632 -0.034125,12.7656579 0.102375,12.8997632 C0.170975,12.9661316 0.260575,12.9989737 0.350175,12.9989737 C0.439775,12.9989737 0.529375,12.9654474 0.597975,12.8997632 L6.650175,6.98339474 L12.702375,12.8997632 C12.770975,12.9661316 12.860575,12.9989737 12.950175,12.9989737 C13.039775,12.9989737 13.129375,12.9654474 13.197975,12.8997632 C13.334475,12.7656579 13.334475,12.5487632 13.197975,12.4153421 L7.145775,6.49965789 L7.144375,6.49965789 Z" />
</group>

关注 Group 标签，pivotX 和ivotY 将定位图像，如果 viewportHeight 和 viewportWidth 为 24，则意味着ivotX 和ivotY 12 会将其放置在中心，因为 24/2 是 12 :)

另一个重要的标签，scaleX 和scaleY 将缩放图像的大小。