自定义视图未正确绘制

Question

我有一个我创建的自定义指标视图。

正如你在第一张照片上看到的，一切都被正确绘制， 但有时当我关闭应用程序并再次启动它时，它绘制得不正确（第二张图片）

试图找出可能是什么原因。 也许是一些缓存？

这是我的onDraw代码：

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    drawUnselected(canvas, mUnselectedPaint);
    drawSelected(canvas, mSelectedPaint);
    drawDone(canvas, mDonePaint);
}
private void drawDone(Canvas canvas, Paint mDonePaint) {
    for (Integer page : mDonePages) {
        canvas.drawBitmap(mDoneItemBitmap, dotCenterX[page], mDotTopY, mDonePaint);
    }
}

private void drawSelected(Canvas canvas, Paint mSelectedPaint) {
    float dist = ((mSelectedPaint.descent() + mSelectedPaint.ascent()) / 2);

    for (Integer page : mSelectedPages) {
        canvas.drawBitmap(mSelectedItemBitmap, dotCenterX[page], mDotTopY, mSelectedPaint);
        canvas.drawText("" + (page + 1), dotCenterX[page] + mDotRadius + dist, mDotTopY + mDotRadius - dist, mSelectedPaint);
    }
}

private void drawUnselected(Canvas canvas, Paint mUnselectedPaint) {
    int paddingTop = getPaddingTop();
    for (int page = 0; page < mDotsNumber; page++) {
        Paint test = new Paint();
        test.setColor(Color.BLACK);
        test.setStrokeWidth(30);
        canvas.drawBitmap(mUnSelectedItemBitmap, dotCenterX[page], mDotTopY, mUnselectedPaint);
        float dist = ((mNumbersPaint.descent() + mNumbersPaint.ascent()) / 2);
        canvas.drawText("" + (page + 1), dotCenterX[page] + mDotRadius + dist, mDotTopY + mDotRadius - dist, mNumbersPaint);
        if (page == mDotsNumber - 1) {
            //last page
        } else {
            canvas.drawLine(dotCenterX[page] + mDotDiameter - 2, mDotRadius + paddingTop, dotCenterX[page] + mDotDiameter + mDotGap + 1, mDotRadius + paddingTop, mUnselectedPaint);
        }
    }
}