设置imageView正方形高宽

private void initWidth() {
        int screenWidth = ((MyApplication)getApplication()).screenWidth;
        if(0 == screenWidth){
            DisplayMetrics dm = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(dm);
            ((MyApplication)this.getApplication()).screenWidth = dm.widthPixels;
            screenWidth = dm.widthPixels;    //得到宽度
        }
        imageViewWidth = (screenWidth - (3*CommonUtil.dip2px(ProductListActivity.this, 10)))/2;
    }

//重新设置图像宽高
            ViewGroup.LayoutParams params =  holder.imgIconUrl0.getLayoutParams();
            params.width = imageViewWidth;
            params.height = imageViewWidth;
            holder.imgIconUrl0.setLayoutParams(params);
            
            ImageLoaderUtil.displayBigImage(products.get(0).getIconUrl(),
                holder.imgIconUrl0, new ImageLoadingListener() {
                    @Override
                    public void onLoadingStarted(String imageUri, View view) {}
                    
                    @Override
                    public void onLoadingFailed(String imageUri, View view,FailReason failReason) {}
                    
                    @Override
                    public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {}
                    
                    @Override
                    public void onLoadingCancelled(String imageUri, View view) {}
            });

原问题描述：我想在activity中改变图片视图的宽高属性，但是我用了一个方法后没有实现，应该要怎么实现呢？

解决方案：

在这段代码中，创建了一个新的实例并且设置了尺寸：

// SET THE IMAGEVIEW DIMENSIONS
int dimens = 120;
float density = activity.getResources().getDisplayMetrics().density;
int finalDimens = (int)(dimens * density);

LinearLayout.LayoutParams imgvwDimens =
        new LinearLayout.LayoutParams(finalDimens, finalDimens);
imgAlbumPhoto.setLayoutParams(imgvwDimens);

// SET SCALETYPE
imgAlbumPhoto.setScaleType(ScaleType.CENTER_CROP);

// SET THE MARGIN
int dimensMargin = 5;
float densityMargin = activity.getResources().getDisplayMetrics().density;
int finalDimensMargin = (int)(dimensMargin * densityMargin);

LinearLayout.LayoutParams imgvwMargin =
        new LinearLayout.LayoutParams(finalDimens, finalDimens);
imgvwMargin.setMargins
(finalDimensMargin, finalDimensMargin, finalDimensMargin, finalDim

ensMargin);

改变已存在的ImageView尺寸，使用这个：

coupon_img.setLayoutParams(new LayoutParams(100, 100));