Android:如何以编程方式为可绘制的矢量设置描边颜色

Question

我遇到了 Android 中 VectorDrawable 的问题。我有一个矢量可绘制文件 (.xml)，我想在位图上绘制它。我设法加载了这个文件并将其绘制在位图上。我可以改变它的填充颜色，但问题是我不能改变它的笔触和颜色。

任何帮助将不胜感激!!!

谢谢!

这是可绘制文件:

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="312dp"
    android:height="312dp"
    android:viewportWidth="312.7"
    android:viewportHeight="312.699">
<path
    android:pathData="M306.35,266.34c0,22.09 -17.91,40.01 -40,40.01L46.35,306.35c-22.09,0 -40,-17.92 -40,-40.01v-219.99c0,-22.11 17.92,-40 40,-40h220c22.09,0 40,17.9 40,40L306.35,266.34z"
    android:strokeWidth="5"
    android:fillColor="@color/transparent"
    android:strokeColor="#231F20"/></vector>

这是我加载形状并用蓝色填充形状的方式:

Drawable drawable = getResources().getDrawable(R.drawable.graph_rounded_rectangle);
        drawable.setBounds(0, 0, width, height);
        drawable.setColorFilter(new PorterDuffColorFilter(getResources().getColor(R.color.blue), PorterDuff.Mode.MULTIPLY));
        drawable.draw(canvas);

Answer 1

如 Chris Banes 所说在 his blog ，您可以使用以下代码使用支持库为您的可绘制对象着色:

Drawable drawable = ContextCompat.getDrawable(mContext, R.drawable.ic_asset);

// Wrap the drawable so that future tinting calls work
// on pre-v21 devices. Always use the returned drawable.
drawable = DrawableCompat.wrap(drawable);

// We can now set a tint
DrawableCompat.setTint(drawable, Color.RED);
// ...or a tint list
DrawableCompat.setTintList(drawable, myColorStateList);
// ...and a different tint mode
DrawableCompat.setTintMode(drawable, PorterDuff.Mode.SRC_OVER);