android下载网络图片，设置宽高，等比缩放

<ImageView
android:id="@+id/qrcodeImg"
android:layout_width="300dp"
android:layout_height="300dp"
android:scaleType="fitCenter"
android:background="@color/blue"
/>

Glide.with(getContext()).load(AppModel.GetInstance().getUserQrcodePath()).into(qrcodeImg);
 
int screenWidth = QMUIDisplayHelper.getScreenWidth(getContext());
int screenHeight = QMUIDisplayHelper.getScreenHeight(getContext());
ViewGroup.LayoutParams layoutParams = (ViewGroup.LayoutParams) qrcodeImg.getLayoutParams();
 
int maxWidth = (int) (screenWidth * 0.7);
int maxHeight = (int) (screenHeight * 0.6);
 
layoutParams.width = maxWidth;
layoutParams.height = maxHeight;
 
qrcodeImg.setAdjustViewBounds(true);
qrcodeImg.setMaxWidth(maxWidth);
qrcodeImg.setMaxHeight(maxHeight);