RatingBar benutzerdefinierte Vector Drawables überlagern

Question

RatingBar in Android ist frustrierend.

Ich habe https://stackoverflow.com/a/13107765 verfolgt, um eine benutzerdefinierte Bewertungsleiste mit meinen eigenen Zeichnern zu implementieren, aber alle Sterne überlagern sich einfach gegenseitig, so dass schließlich nur ein einziger Stern angezeigt wird.

Ich kann nicht für das Leben von mir herausfinden, warum.

EDIT: PNG Drawables scheinen gut zu funktionieren, SVGs als Vektor Drawables jedoch verwendet werden, dieses Problem verursacht

Answer 1

Hier eine temporäre Fix, bis sie in es in der Unterstützung lib aussehen (ich es auch in Kern gesteckt haben https://gist.github.com/harrane/815e8a94d7ca75d964714228af69c60c)

public class RatingBarVectorFix extends RatingBar { 

    private Bitmap mSampleTile; 

    public RatingBarVectorFix(Context context) { 
     this(context, null); 
    } 

    public RatingBarVectorFix(Context context, AttributeSet attrs) { 
     this(context, attrs, android.support.v7.appcompat.R.attr.ratingBarStyle); 
    } 

    public RatingBarVectorFix(Context context, AttributeSet attrs, int defStyleAttr) { 
     super(context, attrs, defStyleAttr); 
     init(); 
    } 

    private void init() { 
     LayerDrawable drawable = (LayerDrawable) tileify(getProgressDrawable(), false); 
     drawable.findDrawableByLayerId(android.R.id.background).setColorFilter(backgroundTintColor, PorterDuff.Mode.SRC_ATOP); 
     drawable.findDrawableByLayerId(android.R.id.progress).setColorFilter(progressTintColor, PorterDuff.Mode.SRC_ATOP); 
     setProgressDrawable(drawable); 
    } 

    /** 
    * Converts a drawable to a tiled version of itself. It will recursively 
    * traverse layer and state list drawables. 
    */ 
    private Drawable tileify(Drawable drawable, boolean clip) { 
     if (drawable instanceof DrawableWrapper) { 
      Drawable inner = ((DrawableWrapper) drawable).getWrappedDrawable(); 
      if (inner != null) { 
       inner = tileify(inner, clip); 
       ((DrawableWrapper) drawable).setWrappedDrawable(inner); 
      } 
     } else if (drawable instanceof LayerDrawable) { 
      LayerDrawable background = (LayerDrawable) drawable; 
      final int N = background.getNumberOfLayers(); 
      Drawable[] outDrawables = new Drawable[N]; 

      for (int i = 0; i < N; i++) { 
       int id = background.getId(i); 
       outDrawables[i] = tileify(background.getDrawable(i), 
         (id == android.R.id.progress || id == android.R.id.secondaryProgress)); 
      } 
      LayerDrawable newBg = new LayerDrawable(outDrawables); 

      for (int i = 0; i < N; i++) { 
       newBg.setId(i, background.getId(i)); 
      } 

      return newBg; 

     } else if (drawable instanceof BitmapDrawable) { 
      final BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable; 
      final Bitmap tileBitmap = bitmapDrawable.getBitmap(); 
      if (mSampleTile == null) { 
       mSampleTile = tileBitmap; 
      } 

      final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape()); 
      final BitmapShader bitmapShader = new BitmapShader(tileBitmap, 
        Shader.TileMode.REPEAT, Shader.TileMode.CLAMP); 
      shapeDrawable.getPaint().setShader(bitmapShader); 
      shapeDrawable.getPaint().setColorFilter(bitmapDrawable.getPaint().getColorFilter()); 
      return (clip) ? new ClipDrawable(shapeDrawable, Gravity.LEFT, 
        ClipDrawable.HORIZONTAL) : shapeDrawable; 
     } else { 
      return tileify(getBitmapDrawableFromVectorDrawable(drawable), clip); 
     } 

     return drawable; 
    } 

    private BitmapDrawable getBitmapDrawableFromVectorDrawable(Drawable drawable) { 
     Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888); 
     Canvas canvas = new Canvas(bitmap); 
     drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight()); 
     drawable.draw(canvas); 
     return new BitmapDrawable(getResources(), bitmap); 
    } 

    @Override 
    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
     super.onMeasure(widthMeasureSpec, heightMeasureSpec); 
     if (mSampleTile != null) { 
      final int width = mSampleTile.getWidth() * getNumStars(); 
      setMeasuredDimension(ViewCompat.resolveSizeAndState(width, widthMeasureSpec, 0), 
        getMeasuredHeight()); 
     } 
    } 

    private Shape getDrawableShape() { 
     final float[] roundedCorners = new float[]{5, 5, 5, 5, 5, 5, 5, 5}; 
     return new RoundRectShape(roundedCorners, null, null); 
    } 
}