Android的自定義視圖setShadowLayer的onDraw遞歸調用

Question

我定義自定義線圖來看，我想畫shadowLayer

mFoldLinePaint.setStyle(Paint.Style.STROKE); 
mFoldLinePaint.setPathEffect(null); 
canvas.drawPath(mPath, mFoldLinePaint); 
mFoldLinePaint.setShader(new LinearGradient(line.getPoint(0).fLineX, line.getPoint(0).fLineY, line.getPoint(line.getSize() - 1).fLineX, line.getPoint(line.getSize() - 1).fLineY, mFoldLineGradientLeftColor, mFoldLineGradientRightColor, Shader.TileMode.MIRROR)); 
setLayerType(LAYER_TYPE_SOFTWARE, null); 
mFoldLinePaint.setShadowLayer(5, 5, -5, Color.BLACK); 

然後我得到的問題

1.onDraw遞歸調用

2.Black顏色不工作（陰影層工作） 任何一個幫助我？

Answer 1

1.刪除此代碼setLayerType（LAYER_TYPE_SOFTWARE，null）;從自定義視圖 添加mView.setLayerType（LAYER_TYPE_SOFTWARE，null）;在活動或片段

2.Black顏色無法正常工作（陰影層工作） drawPath兩個時間

mFoldLinePaint.setStyle(Paint.Style.STROKE); 
    mFoldLinePaint.setPathEffect(null); 
    mFoldLinePaint.setShader(new LinearGradient(line.getPoint(0).fLineX, line.getPoint(0).fLineY, line.getPoint(line.getSize() - 1).fLineX, line.getPoint(line.getSize() - 1).fLineY, mFoldLineGradientLeftColor, 
    mFoldLineGradientRightColor, Shader.TileMode.MIRROR)); 

    mFoldLinePaintVice.setStyle(Paint.Style.STROKE); 
    mFoldLinePaintVice.setPathEffect(null); 
    mFoldLinePaintVice.setShadowLayer(5, 5, -5, Color.BLACK); 

    canvas.drawPath(mPath, mFoldLinePaintVice); 
    canvas.drawPath(mPath, mFoldLinePaint);