在位图上绘制高质量的位图文本

Question

我尝试如图所示在位图上写文本，但是文本质量低，我想提高文本质量，如何实现呢？

我研究了互联网，在解决方案中使用了g.drawString，但我想使用staticlayout来做到这一点。

下面将提到我使用的代码，因此我不得不说stickerview使用了此代码。

@Override
    public int getWidth() {
        if(!text.equals(text_origin)||isFirstGetWidth) {
            text_origin = text;
            isFirstGetWidth = false;
            if (text.split("\n").length < 2) {
                if (textPaint.measureText(text) < maxWidth) {
                    stickerWidth_origin = (int) textPaint.measureText(text)+ 18;
                    return stickerWidth_origin;
                } else {
                    stickerWidth_origin = maxWidth+ 18;
                    return stickerWidth_origin;
                }
            }
            String[] texts = text.split("\n");
            stickerWidth_origin = 0;
            int text_m;
            for (int i = 0; i < texts.length; i++) {
                if (textPaint.measureText(texts[i]) < maxWidth) {
                    text_m = (int) textPaint.measureText(texts[i]);
                } else {
                    text_m = maxWidth;
                }
                if (text_m > stickerWidth_origin) {
                    stickerWidth_origin = text_m;
                }
            }
            stickerWidth_origin = stickerWidth_origin + 18;
            return stickerWidth_origin;
        }
        return stickerWidth_origin;
    }

    @Override
    public int getHeight() {
        if(!text.equals(text_origin)||isFirstGetHeight) {
            text_origin= text;
            isFirstGetHeight = false;
            int lines = 0;
            String[] texts = text.split("\n");
            int line_m;
            for (int i = 0; i < texts.length; i++) {
                line_m = (int) Math.ceil(textPaint.measureText(texts[i]) / maxWidth);
                if (line_m > 1) {
                    lines += line_m;
                } else {
                    lines++;
                }
            }
            if (text.endsWith("\n")) {
                lines++;
            }
        }
        return stickerHeight_origin;

    }
    private Bitmap Text(){
    Bitmap image = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(image);
    if (drawable != null) {
        drawable.setBounds(realBounds);
        drawable.draw(canvas);
    }

    if (textRect.width() == getWidth()) {
        int dy = getHeight() / 2 - staticLayoutText.getHeight() / 2;
        // center vertical
        canvas.translate(0, dy);
    } else {
        int dx = textRect.left;
        int dy = textRect.top + textRect.height() / 2 - staticLayoutText.getHeight() / 2;
        canvas.translate(dx, dy);
    }

    staticLayoutShadow.draw(canvas);
    staticLayoutOutline.draw(canvas);
    staticLayoutText.draw(canvas);
    return image;
}

    @Override
public void draw(@NonNull Canvas canvas) {
    Matrix matrix = getMatrix();
    canvas.save();
    canvas.concat(matrix);
    paint = new Paint();
    paint.setAntiAlias(true);
    if (mode != null)
        paint.setXfermode(new PorterDuffXfermode(mode));
    canvas.drawBitmap(Text(), null, realBounds, paint);
    canvas.restore();
}

Answer 1

无论您做什么，无论何时使用画布，事物的质量都会变得模糊！但是，与其尝试在位图上绘制，不如使用具有imageview和textview的框架布局，然后捕获已加载的framelayout，大大提高您的图像质量！