科特林

val density = Resources.getSystem().displayMetrics.density
view.layoutParams.height = 20 * density.toInt()

简单地创建一个LayoutParams对象并将其分配给imageView

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(150, 150);
imageView.setLayoutParams(params);

为了以编程方式设置ImageView和Height，你可以这样做

            //Makesure you calculate the density pixel and multiply it with the size of width/height
            float dpCalculation = getResources().getDisplayMetrics().density;
            your_imageview.getLayoutParams().width = (int) (150 * dpCalculation);

            //Set ScaleType according to your choice...
            your_imageview.setScaleType(ImageView.ScaleType.CENTER_CROP);

int newHeight = 150;
            int newWidth = 150; 
            holder.iv_arrow.requestLayout();
            holder.iv_arrow.getLayoutParams().height = newHeight;
            holder.iv_arrow.getLayoutParams().width = newWidth;
            holder.iv_arrow.setScaleType(ImageView.ScaleType.FIT_XY);
            holder.iv_arrow.setImageResource(R.drawable.video_menu);

您可以为所有情况设置值。

demoImage.getLayoutParams().height = 150;

demoImage.getLayoutParams().width = 150;

demoImage.setScaleType(ImageView.ScaleType.FIT_XY);

的形象。setLayoutParams(新ViewGroup。LayoutParams(宽度、高度));

例子:

image.setLayoutParams(new ViewGroup.LayoutParams(150, 150));