画布绘制文本定位

我正在创建一个绘图工具，用户可以在其中向图像添加文本。当通过画布位置将文本绘制到位图时，未正确设置。

Paint paint = new Paint();
        paint.setStyle(Paint.Style.FILL);
        paint.setColor(Color.RED);
        paint.setTypeface(tf);
        paint.setTextAlign(Paint.Align.LEFT);

        paint.setTextSize(30);



int xPos = layoutTextViewContainer.getLeft();
        int yPos = layoutTextViewContainer.getTop();
        canvas.drawText(text, xPos, yPos, paint);

Paint

Rect textRect = new Rect();
        paint.getTextBounds(text, 0, text.length(), textRect);
        textRect.offset(0, -textRect.top);
        Canvas canvas = new Canvas(bm);

layoutTextViewContainer holds the edit text. Screen shot for more clarification. Black text is written and Red text is preview of embed in image

得到了解决方案。这些值应该与像素无关 在传递给drawText之前按如下方式转换xPos和yPos

 xPos = (int) (xPos / getResources().getDisplayMetrics().density);
    yPos = (int) (yPos / getResources().getDisplayMetrics().density);