Android 系统APK-Camera 将相机像素从高到低降序排列

Posted 2021-12-29 王睿丶

路径：packages/apps/Camera2/src/com/android/camera/settings/PictureSizeLoader.java

用 Collections 对相机具备的像素集合数据进行排序。

s2与s1的先后顺序决定：将像素按高度从高到低还是从低到高进行排序
s2.getHeight()-s1.getHeight()

private List<Size> computeSizesForCamera(CameraDeviceSelector facingSelector) 
....
+                //wangrui Resolution sort
+                try 
+                   Collections.sort(sizes, new Comparator<Size>() 
+                         @Override
+                        public int compare(Size o1, Size o2) 
+                            if (o1 instanceof Size && o2 instanceof  Size)
+                                Size s1 = (Size) o1;
+                                Size s2 = (Size) o2;
+                                return s2.getHeight()-s1.getHeight();
+                            
+                            throw  new ClassCastException("Cannot be converted to Size type");
+                        
+                    );
+                catch (Exception e)
+                    e.printStackTrace();
+                
...