相機未打開 - 在OpenCV上進行靜態初始化Android

Question

嗨，我正在使用OpenCV人臉檢測示例（OpenCV 2.4.2）。我已將面部檢測樣本更改爲OpenCV靜態初始化。我在我的FdActivity.java文件中更改了下面的代碼。但我無法打開本機相機。當我打電話給「openCamera（）」方法時，它顯示「致命錯誤：無法打開相機！」警報框。什麼似乎是問題？

@Override 
    public void onCreate(Bundle savedInstanceState) { 
     Log.i(TAG, "onCreate"); 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     Log.i(TAG, "Trying to load OpenCV library"); 
     if (!OpenCVLoader.initDebug()) { 
      Log.e(TAG, "Cannot connect to OpenCV Manager"); 
     } else { 
      mOpenCVCallBack.onManagerConnected(LoaderCallbackInterface.SUCCESS); 
     } 
    } 

的logcat：

10-12 09:44:01.604: I/Sample::Activity(676): Instantiated new class org.opencv.samples.fd.FdActivity 
10-12 09:44:01.654: I/Sample::Activity(676): onCreate 
10-12 09:44:01.704: I/Sample::Activity(676): Trying to load OpenCV library 
10-12 09:44:01.704: D/OpenCV/StaticHelper(676): Trying to get library list 
10-12 09:44:01.895: E/OpenCV/StaticHelper(676): OpenCV error: Cannot load info library for OpenCV 
10-12 09:44:01.895: D/OpenCV/StaticHelper(676): Library list: "" 
10-12 09:44:01.895: D/OpenCV/StaticHelper(676): First attempt to load libs 
10-12 09:44:01.895: D/OpenCV/StaticHelper(676): Trying to init OpenCV libs 
10-12 09:44:01.895: D/OpenCV/StaticHelper(676): Trying to load library opencv_java 
10-12 09:44:01.895: D/dalvikvm(676): Trying to load lib /data/data/com.face.conf/lib/libopencv_java.so 0x411e3cc0 
10-12 09:44:02.134: D/dalvikvm(676): Added shared lib /data/data/com.face.conf/lib/libopencv_java.so 0x411e3cc0 
10-12 09:44:02.164: D/OpenCV/StaticHelper(676): OpenCV libs init was ok! 
10-12 09:44:02.164: D/OpenCV/StaticHelper(676): First attempt to load libs is OK 
10-12 09:44:02.164: I/Sample::Activity(676): OpenCV loaded successfully 
10-12 09:44:02.164: I/Sample::Activity(676): OpenCV loaded successfully 
10-12 09:44:02.174: D/dalvikvm(676): Trying to load lib /data/data/com.face.conf/lib/libdetection_based_tracker.so 0x411e3cc0 
10-12 09:44:02.185: D/dalvikvm(676): Added shared lib /data/data/com.face.conf/lib/libdetection_based_tracker.so 0x411e3cc0 
10-12 09:44:02.185: D/dalvikvm(676): No JNI_OnLoad found in /data/data/com.face.conf/lib/libdetection_based_tracker.so 0x411e3cc0, skipping init 
10-12 09:44:02.394: I/Sample::SurfaceView(676): Instantiated new class org.opencv.samples.fd.FdView 
10-12 09:44:02.654: I/Sample::FdView(676): Loaded cascade classifier from /data/data/com.face.conf/app_cascade/lbpcascade_frontalface.xml 
10-12 09:44:02.654: D/dalvikvm(676): Trying to load lib /data/data/com.face.conf/lib/libdetection_based_tracker.so 0x411e3cc0 
10-12 09:44:02.654: D/dalvikvm(676): Shared lib '/data/data/com.face.conf/lib/libdetection_based_tracker.so' already loaded in same CL 0x411e3cc0 
10-12 09:44:02.924: I/Sample::SurfaceView(676): openCamera 
10-12 09:44:02.924: I/Sample::SurfaceView(676): releaseCamera 
10-12 09:44:02.934: D/CAMERA_ACTIVITY(676): Library name: libopencv_java.so 
10-12 09:44:02.934: D/CAMERA_ACTIVITY(676): Library base address: 0x4ac0c000 
10-12 09:44:02.984: D/CAMERA_ACTIVITY(676): Libraries folder found: /data/data/com.face.conf/lib/ 
10-12 09:44:02.984: D/CAMERA_ACTIVITY(676): CameraWrapperConnector::connectToLib: folderPath=/data/data/com.face.conf/lib/ 
10-12 09:44:02.984: E/CAMERA_ACTIVITY(676): CameraWrapperConnector::connectToLib ERROR: cannot dlopen camera wrapper library 
10-12 09:44:02.984: E/CV_CAP(676): Native_camera returned opening error: 4 
10-12 09:44:02.984: E/Sample::SurfaceView(676): Failed to open native camera 
10-12 09:44:03.234: D/dalvikvm(676): GC_CONCURRENT freed 210K, 4% free 8461K/8775K, paused 33ms+33ms, total 149ms 
10-12 09:44:03.564: I/Sample::Activity(676): onResume 
10-12 09:44:03.584: I/Sample::SurfaceView(676): openCamera 
10-12 09:44:03.584: I/Sample::SurfaceView(676): releaseCamera 
10-12 09:44:03.584: D/CAMERA_ACTIVITY(676): Library name: libopencv_java.so 
10-12 09:44:03.584: D/CAMERA_ACTIVITY(676): Library base address: 0x4ac0c000 
10-12 09:44:03.634: D/CAMERA_ACTIVITY(676): Libraries folder found: /data/data/com.face.conf/lib/ 
10-12 09:44:03.634: D/CAMERA_ACTIVITY(676): CameraWrapperConnector::connectToLib: folderPath=/data/data/com.face.conf/lib/ 
10-12 09:44:03.634: E/CAMERA_ACTIVITY(676): CameraWrapperConnector::connectToLib ERROR: cannot dlopen camera wrapper library 
10-12 09:44:03.634: E/CV_CAP(676): Native_camera returned opening error: 4 
10-12 09:44:03.634: E/Sample::SurfaceView(676): Failed to open native camera 
10-12 09:44:04.254: I/Choreographer(676): Skipped 185 frames! The application may be doing too much work on its main thread. 
10-12 09:44:04.924: I/Sample::SurfaceView(676): surfaceCreated 
10-12 09:44:04.945: I/Sample::SurfaceView(676): surfaceChanged 
10-12 09:44:04.945: I/Sample::SurfaceView(676): Starting processing thread 
10-12 09:44:04.964: I/Sample::SurfaceView(676): setupCamera(800, 442) 
10-12 09:44:05.054: I/Sample::SurfaceView(676): Finishing processing thread 
10-12 09:44:05.054: E/OBJECT_DETECTOR(676): SimpleHighguiDemoCore::stop is called but the SimpleHighguiDemoCore pthread is not active 
10-12 09:44:05.194: I/Choreographer(676): Skipped 231 frames! The application may be doing too much work on its main thread. 
10-12 09:44:05.245: D/gralloc_goldfish(676): Emulator without GPU emulation detected. 
10-12 09:44:05.944: I/Choreographer(676): Skipped 40 frames! The application may be doing too much work on its main thread. 
10-12 09:44:06.814: I/Choreographer(676): Skipped 69 frames! The application may be doing too much work on its main thread. 
10-12 09:44:12.354: I/Sample::Activity(676): onPause 
10-12 09:44:12.414: I/Sample::SurfaceView(676): releaseCamera 
10-12 09:44:14.084: D/dalvikvm(676): GC_CONCURRENT freed 146K, 3% free 8713K/8967K, paused 31ms+26ms, total 156ms 
10-12 09:44:14.923: I/Choreographer(676): Skipped 495 frames! The application may be doing too much work on its main thread. 
10-12 09:44:15.083: I/Sample::SurfaceView(676): surfaceDestroyed 
10-12 09:44:15.083: I/Sample::SurfaceView(676): releaseCamera 
10-12 09:44:16.253: I/Choreographer(676): Skipped 230 frames! The application may be doing too much work on its main thread. 
10-12 09:44:17.313: I/Choreographer(676): Skipped 211 frames! The application may be doing too much work on its main thread. 
10-12 09:44:18.873: I/Choreographer(676): Skipped 85 frames! The application may be doing too much work on its main thread. 

Answer 1

最後我固定的問題。問題是，當我做了NDK構建時，OpenCV本地庫不會複製到項目庫文件夾中。所以我已經將「/ sdk/native/libs /」中相應的OpenCV本機庫手動複製到我的項目「/ libs /」中。現在它工作正常。