我从LogCat中得到这些错误: 10-30 00:31:51.494: D/CameraHal(1205): CameraHal setOverlay/1/00000000/00000000 10-30 00:31:51.494: E/CameraHal(1205): Trying to set overlay, but overlay is null!, line:3472 10-30 00:31:51.494: W/CameraService(1205): Overlay create failed – retrying … 10-30 00:31:52.526: E/CameraService(1205): Overlay Creation Failed! … 10-30 00:31:52.588: E/AndroidRuntime(5040): FATAL EXCEPTION: main 10-30 00:31:52.588: E/AndroidRuntime(5040): java.lang.RuntimeException: startPreview failed 10-30 00:31:52.588: E/AndroidRuntime(5040): at android.hardware.Camera.startPreview(Native Method) 10-30 00:31:52.588: E/AndroidRuntime(5040): […]