切换的时候也要更新二维码，因为图片可能不一样

app/src/main/java/com/sheep/gamegroup/view/activity/ActInvitation.java

@@ -111,6 +111,7 @@ public class ActInvitation extends BaseActivity {
 
     private List<PictureInvitationEntity> mPictureList = new ArrayList<>();
     private List<View> viewArrayList = new ArrayList<>();
+    private SparseArray<BitmapFactory.Options> optionsList = new SparseArray<>();
 
     @SuppressLint("ClickableViewAccessibility")
     @Override
@@ -211,7 +212,7 @@ public class ActInvitation extends BaseActivity {
     private void loadData() {
         int size = 0;
         for (final PictureInvitationEntity item : mPictureList) {
-            View itemView = LayoutInflater.from(SheepApp.getInstance()).inflate(R.layout.item_image2, null);
+            final View itemView = LayoutInflater.from(SheepApp.getInstance()).inflate(R.layout.item_image2, null);
 
             final View image_container = itemView.findViewById(R.id.image_container);
             final ImageView image_full = itemView.findViewById(R.id.image_full);
@@ -236,12 +237,16 @@ public class ActInvitation extends BaseActivity {
 
 //            if(item.getPicture() != null)
 //                GlideImageLoader.downloadAndRoundedImage(name, item.getPicture(), image_full, getResources().getDimensionPixelSize(R.dimen.content_padding_8), listener);
+            final int index = size;
+            viewArrayList.add(itemView);
+            viewList.put(size, itemView);
             GlideImageLoader.downLoadImage(name, item.getPicture(), new Action1<File>() {
                 @Override
                 public void call(File file) {
                     BitmapFactory.Options options = FileUtil.getImageOptions(file);
                     final int w = options.outWidth;
                     final int h = options.outHeight;
+                    optionsList.put(index, options);
 //                int w = width;
 //                int h = width * options.outHeight / options.outWidth;
                     Glide.with(SheepApp.getInstance())
@@ -249,56 +254,7 @@ public class ActInvitation extends BaseActivity {
                             .listener(listener)
                             .apply(new RequestOptions().override(w, h).transform(new RoundedCorners(getResources().getDimensionPixelSize(R.dimen.content_padding_8))))
                             .into(image_full);
-                    viewPager.postDelayed(new Runnable() {
-                        @Override
-                        public void run() {
-                            image_container.setVisibility(View.VISIBLE);
-                            int vWidth = viewPager.getWidth();
-                            int vHeight = viewPager.getHeight();
-                            float imgWidth = vWidth;
-                            float imgHeight = vHeight;
-                            int imgHeightPadding = 0;
-                            if(vHeight * 1.0F / vWidth > h * 1.0F / w){//图片上下有padding
-                                imgHeight = imgWidth * h / w;
-                                imgHeightPadding = (int) ((vHeight - imgHeight) / 2);
-                            } else {//图片左右有padding
-                                imgWidth = imgHeight * w / h;
-                            }
-
-                            float containerWidthRadius = 60 / 216F;
-                            float containerHeightRadius = 70 / 216F;
-                            float rqRadius = 53 / 216F;
-                            float tipRadius = 5 / 216F;
-                            float radius = 4 / 216F;
-                            float topRadius = 2 / 216F;
-                            float logoRadius = rqRadius * 16 / 68;
-                            GlideImageLoader.saveAndSetRqImage(image_bottom, item.getLink(), (int) (imgWidth * rqRadius));
-                            //重新设置logo的宽高
-                            ViewGroup.LayoutParams layoutParams = image_logo.getLayoutParams();
-                            layoutParams.width = (int) (imgWidth * logoRadius);
-                            layoutParams.height = (int) (imgWidth * logoRadius);
-                            image_logo.setLayoutParams(layoutParams);
-                            //重新设置二维码上部的距离
-                            ViewGroup.LayoutParams layoutParamsTop = image_bottom_top.getLayoutParams();
-                            layoutParamsTop.height = (int) (imgWidth * topRadius);
-                            image_bottom_top.setLayoutParams(layoutParamsTop);
-                            //重新设置《扫我开始赚钱》的高度
-                            ViewGroup.LayoutParams layoutParamsTip = image_tip.getLayoutParams();
-                            layoutParamsTip.height = (int) (imgWidth * (tipRadius + topRadius * 3 / 2));
-                            image_tip.setLayoutParams(layoutParamsTip);
-                            image_tip.setTextSize(imgWidth * tipRadius / G.DENSITY);
-                            //重新设置整个二维码外容器的高度
-                            RelativeLayout.LayoutParams layoutParamsContainer = (RelativeLayout.LayoutParams) image_container.getLayoutParams();
-                            layoutParamsContainer.width = (int) (imgWidth * containerWidthRadius);
-                            layoutParamsContainer.height = (int) (imgWidth * containerHeightRadius);
-                            layoutParamsContainer.bottomMargin = imgHeightPadding;
-                            image_container.setLayoutParams(layoutParamsContainer);
-                            Drawable bg = image_container.getBackground();
-                            if (bg instanceof GradientDrawable) {
-                                ((GradientDrawable) bg).setCornerRadius(imgWidth * radius);
-                            }
-                        }
-                    }, 50L);
+                    updateLayoutParams(index, 500L);
                 }
             });
             //之前的方法实际上没有实现圆角效果
@@ -307,8 +263,6 @@ public class ActInvitation extends BaseActivity {
 //                    .listener(listener)
 //                    .apply(new RequestOptions().transform(new RoundedCorners((int) getResources().getDimension(R.dimen.content_padding_8))).fitCenter())
 //                    .into(image_full);
-            viewArrayList.add(itemView);
-            viewList.put(size, itemView);
             size++;
         }
         ArrayPagerAdapter adapter = new ArrayPagerAdapter(viewArrayList);
@@ -324,6 +278,7 @@ public class ActInvitation extends BaseActivity {
             @Override
             public void onPageSelected(int position) {
                 curPosition = position;
+                updateLayoutParams(position, 50L);
             }
 
             @Override
@@ -335,6 +290,72 @@ public class ActInvitation extends BaseActivity {
             viewPager.setCurrentItem((size - 1) / 2, false);
     }
 
+    private void updateLayoutParams(int position, long time) {
+        BitmapFactory.Options options = optionsList.get(position);
+        if(options == null){
+            return;
+        }
+        View itemView = viewArrayList.get(position);
+        final PictureInvitationEntity item = mPictureList.get(position);
+        final int w = options.outWidth;
+        final int h = options.outHeight;
+        final View image_container = itemView.findViewById(R.id.image_container);
+        final View image_bottom_top = itemView.findViewById(R.id.image_bottom_top);
+        final ImageView image_bottom = itemView.findViewById(R.id.image_bottom);
+        final ImageView image_logo = itemView.findViewById(R.id.image_logo);
+        final TextView image_tip = itemView.findViewById(R.id.image_tip);
+        viewPager.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                image_container.setVisibility(View.VISIBLE);
+                int vWidth = viewPager.getWidth();
+                int vHeight = viewPager.getHeight();
+                float imgWidth = vWidth;
+                float imgHeight = vHeight;
+                int imgHeightPadding = 0;
+                if(vHeight * 1.0F / vWidth > h * 1.0F / w){//图片上下有padding
+                    imgHeight = imgWidth * h / w;
+                    imgHeightPadding = (int) ((vHeight - imgHeight) / 2);
+                } else {//图片左右有padding
+                    imgWidth = imgHeight * w / h;
+                }
+
+                float containerWidthRadius = 60 / 216F;
+                float containerHeightRadius = 70 / 216F;
+                float rqRadius = 53 / 216F;
+                float tipRadius = 5 / 216F;
+                float radius = 4 / 216F;
+                float topRadius = 2 / 216F;
+                float logoRadius = rqRadius * 16 / 68;
+                GlideImageLoader.saveAndSetRqImage(image_bottom, item.getLink(), (int) (imgWidth * rqRadius));
+                //重新设置logo的宽高
+                ViewGroup.LayoutParams layoutParams = image_logo.getLayoutParams();
+                layoutParams.width = (int) (imgWidth * logoRadius);
+                layoutParams.height = (int) (imgWidth * logoRadius);
+                image_logo.setLayoutParams(layoutParams);
+                //重新设置二维码上部的距离
+                ViewGroup.LayoutParams layoutParamsTop = image_bottom_top.getLayoutParams();
+                layoutParamsTop.height = (int) (imgWidth * topRadius);
+                image_bottom_top.setLayoutParams(layoutParamsTop);
+                //重新设置《扫我开始赚钱》的高度
+                ViewGroup.LayoutParams layoutParamsTip = image_tip.getLayoutParams();
+                layoutParamsTip.height = (int) (imgWidth * (tipRadius + topRadius * 3 / 2));
+                image_tip.setLayoutParams(layoutParamsTip);
+                image_tip.setTextSize(imgWidth * tipRadius / G.DENSITY);
+                //重新设置整个二维码外容器的高度
+                RelativeLayout.LayoutParams layoutParamsContainer = (RelativeLayout.LayoutParams) image_container.getLayoutParams();
+                layoutParamsContainer.width = (int) (imgWidth * containerWidthRadius);
+                layoutParamsContainer.height = (int) (imgWidth * containerHeightRadius);
+                layoutParamsContainer.bottomMargin = imgHeightPadding;
+                image_container.setLayoutParams(layoutParamsContainer);
+                Drawable bg = image_container.getBackground();
+                if (bg instanceof GradientDrawable) {
+                    ((GradientDrawable) bg).setCornerRadius(imgWidth * radius);
+                }
+            }
+        }, time);
+    }
+
     private int curPosition = 0;
     private SparseArray<View> viewList = new SparseArray<>();