覆盖位图和定位

Question

我使用以下代码覆盖2位图：

private Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {
        Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig());
        Canvas canvas = new Canvas(bmOverlay);
        canvas.drawBitmap(bmp1, new Matrix(), null);
        canvas.drawBitmap(bmp2, new Matrix(), null);
        return bmOverlay;
    }

它的作用如下：将第二个位图放在左上角的第一个位图的顶部。

我的问题是如何将第二个位图放在中间底部？谢谢:)）

Answer 1

试试这个：

 private Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {
        Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig());
        Canvas canvas = new Canvas(bmOverlay);
        canvas.drawBitmap(bmp1, new Matrix(), null);
        int centerX = (int) bmp1.getWidth()/2;
        int centerY = (int) bmp1.getHeight()/2;
        canvas.drawBitmap(bmp2, centerX, centerY, null);
        return bmOverlay;
    }