android - API 19 上可绘制的 XML 向量的资源 $NotFoundException

Question

我正在尝试使用以下代码加载可绘制的 XML 矢量:

int px = Application.get().getResources()
                .getDimensionPixelSize(R.dimen.bikeshare_small_marker_size);

Bitmap bitmap = Bitmap.createBitmap(px, px, Bitmap.Config.ARGB_8888);

Canvas c = new Canvas(bitmap);
Drawable shape = ContextCompat.getDrawable(Application.get(), R.drawable.bike_marker_small);
shape.setBounds(0, 0, bitmap.getWidth(), bitmap.getHeight());
shape.draw(c);

这是 bike_marker_small.xml 文件:

<vector android:height="24dp" android:viewportHeight="210.0"
    android:viewportWidth="210.0" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
    <path android:fillColor="#ffffff"
        android:pathData="M105.03,104.97m-53.84,0a53.84,53.84 117.34,1 1,107.67 0a53.84,53.84 117.34,1 1,-107.67 0"
        android:strokeAlpha="1" android:strokeColor="#3a4677" android:strokeWidth="1.46500003"/>
    <path android:fillAlpha="1" android:fillColor="#3a4677"
        android:pathData="M105.1,104.67m-47.53,0a47.53,47.53 118.07,1 1,95.06 0a47.53,47.53 118.07,1 1,-95.06 0"
        android:strokeAlpha="1" android:strokeColor="#000000" android:strokeWidth="0.26458332"/>
</vector>

在 Android 6、7 和 8 上这工作正常。但是，当我尝试在 API 19 (Android 4.4) 模拟器或设备上运行该应用程序时，我得到以下信息:

 android.content.res.Resources$NotFoundException: File res/drawable/bike_marker_small.xml from drawable resource ID #0x7f08005f. 
 If the resource you are trying to use is a vector resource, you may be referencing it in an unsupported way. 
 See AppCompatDelegate.setCompatVectorFromResourcesEnabled() for more info.
      at android.content.res.Resources.loadDrawable(Resources.java:2101)
      at android.content.res.Resources.getDrawable(Resources.java:700)
      at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:353)
      at org.onebusaway.android.map.googlemapsv2.bike.BikeStationOverlay.createBitmapFromShape(BikeStationOverlay.java:195)
      at org.onebusaway.android.map.googlemapsv2.bike.BikeStationOverlay.(BikeStationOverlay.java:87)
      at org.onebusaway.android.map.googlemapsv2.BaseMapFragment.setupBikeStationOverlay(BaseMapFragment.java:474)

我的 build.gradle 中有以下内容:

android {
    compileSdkVersion 27
    buildToolsVersion "26.0.2"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 21
        versionCode 86
        versionName "2.3.1"

        vectorDrawables.useSupportLibrary = true
    }
...

为什么这不起作用？

Answer 1

尝试使用 VectorDrawableCompat.create() 而不是 ContextCompat.getDrawable() 创建可绘制的 shape:

Drawable shape = VectorDrawableCompat.create(
    Application.get().getResources(),
    R.drawable.bike_marker_small, 
    Application.get().getTheme()
);