[BUG] Object Detection with YOLOv5

[zhangliukun]

• bug1: The onActivityResult method in MainActivity will lead to the image from local file or the camera rotate 90 in my huawei p40. I fix it by delete the code matrix.postRotate(90.0f);

• bug2: You should add another permission in the AndroidManifest.xml so that the app won't be crash. Add android:requestLegacyExternalStorage="true" in the AndroidManifest.xml .

[zhangliukun]

If we don't add the android:requestLegacyExternalStorage="true" in the AndroidManifest.xml , the app will crash if we choose image from our phone or take a photo from the camera.

[masc-it]

• bug1: every android vendor manages image orientation differently, hence you should use exif metadata to correctly get it and adapt the matrix rotations. It may also differ between front and rear cameras as it happens with my Redmi Note 7.
• bug2: yes and no. as stated into android official doc, this might be fine if you target android 10 or lower, but: Caution: After you update your app to target Android 11 (API level 30), [the system ignores the requestLegacyExternalStorage attribute](https://developer.android.com/about/versions/11/privacy/storage#scoped-storage) when your app is running on Android 11 devices, so your app must be ready to support scoped storage and to [migrate app data](https://developer.android.com/training/data-storage/use-cases#migrate-legacy-storage) for users on those devices.