Android: 从两个位图创建图像，位图在位图下

Question

我想要的：用两个位图创建图像，在第一个位图下放第二个位图。

此时我使用这段代码

public static Bitmap combineImages(Bitmap background, Bitmap foreground, float disFromTheTopPercent) {

        int width = background.getWidth(), height = background.getHeight();
        Bitmap cs = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas comboImage = new Canvas(cs);
        background = Bitmap.createScaledBitmap(background, width, height, true);
        comboImage.drawBitmap(background, 0, 0, null);

        int top = (int) (disFromTheTopPercent * height);
        int left = 0;

        comboImage.drawBitmap(foreground, left, top, null);

        return cs;
    }

糟糕的是它实际上与我的 smartfon 的身高、体重和 dpi 相关联。

当我用5寸屏和6寸屏的smartfone时是不一样的，无论不同的屏这看起来一定是一样的。

Visual presentation

感谢帮助！

Answer 1

试试这个代码：

public static Bitmap combineImages(Bitmap c, Bitmap s) {
    Bitmap cs;
    int width, height;

    width = s.getWidth();
    height = c.getHeight() + s.getHeight();

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

    Canvas comboImage = new Canvas(cs);

    comboImage.drawBitmap(c, 0f, 0f, null);
    comboImage.drawBitmap(s, 0f, c.getHeight(), null);

    return cs;
}

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