java - 如何在我刚刚在 Android 中拍摄的图像上放置水印图像？

Question

如何在刚拍的照片上加水印(公司标志、图片)？

我需要在 Android 上进行。

你能帮忙吗？

Answer 1

您可以将位图绘制到 Canvas 上，并使用 Canvas drawText methods或 drawBitmap methods添加文本或图像。例如:

drawingCache = Bitmap.createBitmap(300, 400, Bitmap.Config.ARGB_8888);

Canvas canvas = new Canvas(drawingCache);
Paint paint = new Paint();

// Draw your bitmap to the canvas
canvas.drawBitmap(bitmap, 0, 0, paint);

Paint watermarkPaint = new Paint();
watermarkPaint.setColor(Color.WHITE);
watermarkPaint.setAlpha(150);
watermarkPaint.setTextSize(30);
watermarkPaint.setTextAlign(Paint.Align.LEFT);
watermarkPaint.setFlags(Paint.ANTI_ALIAS_FLAG);

canvas.drawText("Watermark", 100, 100, watermarkPaint);