Zenmuse XT Mobile SDK UI相机控件异常及OSD选项失效问题咨询

Hey there, let's dig into the two issues you're facing with the Zenmuse XT Mobile SDK UI when connecting your X3, Z3, and XT 640 Radiometric cameras to LB2/A3 flight controllers. Here are targeted steps to help you diagnose and fix them:

Issue 1: CameraControlsWidget doesn't update to XT camera's settings menu #

• Verify camera connection callbacks: Make sure you've properly registered a CameraStateCallback with the CameraManager. When switching from X3/Z3 to XT, the onCameraConnected callback should trigger a refresh or reinitialization of the CameraControlsWidget. For example, check if you're calling cameraControlsWidget.refresh() or re-binding the widget to the new Camera instance when this callback fires—don't just keep using the initial widget setup tied to your first connected camera.
• Check camera type detection: The XT's thermal settings are vastly different from visible-light cameras. Confirm that Camera.getCameraType() returns CameraType.ZENMUSE_XT when the XT is connected, and that your code loads the appropriate layout/configuration for thermal cameras instead of reusing the X3/Z3's menu logic.
• Validate widget initialization timing: If the CameraControlsWidget was initialized once at app startup, it might not be aware of subsequent camera switches. Try re-initializing the widget with the newly connected XT camera instance right after the connection is confirmed.

Issue 2: FPVOverlayWidget/FPVOverlay don't inherit spot metering and other OSD options #

• Sync OSD configurations across cameras: Spot metering and similar OSD settings are tied to the active camera. Ensure that when you switch to the XT, you fetch its OSD config via Camera.getOSDConfig() and pass it to FPVOverlayWidget.setOSDConfig() to update the overlay. Without this sync, the overlay will retain settings from the previous camera.
• Check SDK version and permissions: Confirm you're using the latest Zenmuse XT Mobile SDK version—older versions may have incomplete support for thermal camera OSD features. Also, double-check that your app has all required permissions (like CAMERA and WRITE_EXTERNAL_STORAGE) since missing permissions can block access to camera OSD settings.
• Review custom overlay implementations: If you've created a subclass of FPVOverlay, make sure you haven't overridden methods that handle OSD inheritance (like updateOSD()) without calling the parent class's implementation. This can break the default logic that pulls OSD settings from the active camera.

General Troubleshooting Tips #

• Add debug logs: Insert logs at key points (camera connection, widget initialization, OSD config fetch) to verify if callbacks are firing, camera types are detected correctly, and OSD values are being retrieved as expected. For example:

  Log.d("CameraDebug", "Connected camera type: " + camera.getCameraType());
  Log.d("OSDDebug", "Spot metering enabled: " + camera.getOSDConfig().isSpotMeteringEnabled());
  

• Test with official demo: Download the official DJI Zenmuse XT Mobile SDK demo and test your camera/flight controller setup. If the demo works correctly, compare its code to yours to spot missing logic or incorrect implementation.
• Update firmware: Ensure your LB2/A3 flight controllers and XT camera are running the latest official firmware. Firmware incompatibilities often cause unexpected SDK behavior.

内容的提问来源于stack exchange，提问作者user5394755