Question

您好我想将String转换为Bitmap并且一切都很好但我不知道如何设置结果Image以适合文本。我怎样才能做到这一点？这是我的代码：

public Bitmap textAsBitmap(String text, float textSize, float stroke,
                           int color, Typeface typeface) {

    TextPaint paint = new TextPaint();
    paint.setColor(color);
    paint.setTextSize(textSize);
    paint.setStrokeWidth(stroke);
    paint.setTypeface(typeface);

    paint.setAntiAlias(true);
    paint.setTextAlign(Paint.Align.LEFT);

    float baseline = (int) (-paint.ascent() + 3f);

    StaticLayout staticLayout = new StaticLayout(text, 0, text.length(),
            paint, 435, android.text.Layout.Alignment.ALIGN_NORMAL, 1.0f,
            1.0f, false);

    int linecount = staticLayout.getLineCount();




    int height = (int) (baseline + paint.descent() + 3) * linecount + 10;

    Bitmap image = Bitmap
            .createBitmap(****MY WIDTH***, height, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(image);
    canvas.drawARGB(0xFF, 0xFF, 0xFF, 0xFF);

    staticLayout.draw(canvas);

    return image;

}

我甚至试过这个，但它没有正常工作：

final Rect bounds = new Rect();
    paint.getTextBounds(text, 0, text.length(), bounds);


    Bitmap image = Bitmap
            .createBitmap(bounds.width(), height, Bitmap.Config.ARGB_8888);

请帮忙！

Answer 1

试试这个：

canvas.drawColor(Color.BLUE);

而不是：

canvas.drawARGB(0xFF, 0xFF, 0xFF, 0xFF);

Answer 2

你应该尝试这个

 public String BitMapToString(Bitmap bitmap) {
    ByteArrayOutputStream byteArray = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArray);
    byte[] b = byteArray.toByteArray();
    String result = Base64.encodeToString(b, Base64.DEFAULT);
    return result;
}

希望这会有所帮助!!!

将字符串转换为位图（android）

2 个答案: