Android:如何计算图像的宽高比？

Question

我有100张巨大的图像(500*700,401*800,2345*3567),所以我希望所有这些图像的高度都与220相同.下面我正在实现图像宽高比的计算.我想设置所有大尺寸图像的固定高度.我正在使用一些算术公式来计算纵横比,但是所有图像的宽度都相同,高度不同但我希望高度固定.如何获得固定高度？感谢欣赏.

这是我的图像宽高比的计算代码

if (bitmapResizeImage != null) {
    int originalWidth = bitmapResizeImage.getWidth();
    int originalHeight = bitmapResizeImage.getHeight();
    Log.e("originalWidth "," = " + originalWidth +" originalHeight = " + originalHeight+" of imgElement = " + imgElement+ " Notation = " +all_Post.getStrNotationNo());

    float aspect_ratio = originalWidth / originalHeight ;
    Log.e("aspect_ratio "," = " + aspect_ratio);

    float adjusted_width = 220 * originalWidth / originalHeight ;
    Log.e("adjusted_width "," = " + adjusted_width);
    float adjusted_height = originalWidth * originalHeight / originalWidth ;
    Log.e("adjusted_height "," = " + adjusted_height);

    pBar.setVisibility(View.GONE);
    imageView.setImageBitmap(bitmapResizeImage);
}

Answer 1

你应该尝试typecasting:

float aspect_ratio = (float)originalWidth / (float)originalHeight ;

因为这个类型转换操作将返回一个浮点值.

整数除以整数将得到整数结果,它将被赋值给一个浮点变量.因此,操作数需要转换为float,以确保结果计算为float.