我可以膨胀一个视图来替换 mapbox android 中的图标吗？

Question

在 mapbox 中添加标记时，可以为标记添加自定义图标。我想知道我们是否可以膨胀视图（R.layout 文件）而不是分配可绘制图标。

代码如下：-

 public void onMapReady(MapboxMap mapboxMap) {
                IconFactory iconFactory=IconFactory.getInstance(context);
                for(int i=0;i<coordinates.size();i++){
                    mapboxMap.addMarker(new MarkerOptions()
                    .position(new LatLng(lat,longt))
                    .icon(iconFactory.fromResource(R.drawable.ic_location_green))
                          //can we inflate a view here instead of assigning a drawable image?
                }

            }

Answer 1

我认为不可能

您可以做的是在运行时绘制自定义图标：

画在Canvas
在运行时生成Drawable（而不是创建xml，你可以创建一个对象。所以如果你要键入<shape>，你可以替换它在 Java)

Shape();

生成一个视图并复制它的位图（How to convert Views to bitmaps?）这个选项只会提供它的外观——点击监听器之类的东西将不起作用 , 因此我看不出选择这个选项的理由

Answer 2

这可以使用以下实用程序 class:

  /**
   * Utility class to generate Bitmaps for Symbol.
   * <p>
   * Bitmaps can be added to the map with {@link com.mapbox.mapboxsdk.maps.MapboxMap#addImage(String, Bitmap)}
   * </p>
   */
  private static class SymbolGenerator {

    /**
     * Generate a Bitmap from an Android SDK View.
     *
     * @param view the View to be drawn to a Bitmap
     * @return the generated bitmap
     */
    public static Bitmap generate(@NonNull View view) {
      int measureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
      view.measure(measureSpec, measureSpec);

      int measuredWidth = view.getMeasuredWidth();
      int measuredHeight = view.getMeasuredHeight();

      view.layout(0, 0, measuredWidth, measuredHeight);
      Bitmap bitmap = Bitmap.createBitmap(measuredWidth, measuredHeight, Bitmap.Config.ARGB_8888);
      bitmap.eraseColor(Color.TRANSPARENT);
      Canvas canvas = new Canvas(bitmap);
      view.draw(canvas);
      return bitmap;
    }
  }

可以找到集成此代码的完整示例 here. Note that this code can be executed on a background thread, so you don't need to block the main thread for it. While we don't expose a binary atm we are looking into creating a little plugin around this code. The feature request for it can be found here。

我可以膨胀一个视图来替换 mapbox android 中的图标吗？

Can I inflate a view replacing the icon in mapbox android?

java

android

google-maps

mapbox

mapbox-android