Android12中的相机使用的是camera2，在vendor下的Camera2进行修改，以下修改就是将相机的默认预览尺寸改为4:3。测试后可以成功调节。
--- vendor/mediatek/proprietary/packages/apps/Camera2/feature/setting/picturesize/src/com/mediatek/camera/feature/setting/picturesize/PictureSize.java (版本 7713)
+++ vendor/mediatek/proprietary/packages/apps/Camera2/feature/setting/picturesize/src/com/mediatek/camera/feature/setting/picturesize/PictureSize.java (版本 7735)
@@ -256,7 +256,7 @@
// Default picture size is the max full-ratio size.
List<String> entryValues = getEntryValues();
for (String value : entryValues) {
- if (PictureSizeHelper.getStandardAspectRatio(value) == fullRatio) {
+ if (PictureSizeHelper.getStandardAspectRatio(value) == PictureSizeHelper.RATIO_4_3) {//aadded by wxw
valueInStore = value;
break;
}
