camera.takePicture()无法在我的JB&GB和Froyo手机上运行

Question

好吧,我这次再次更新了我的问题.

我已经在Galaxy Nexus(JB),Moto-XX(GB),SAMSUNG(Froyo)上逐一测试了以下代码,发生了不同的问题/异常.

public class MainActivity extends Activity {
    @SuppressLint("NewApi")
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

          ShutterCallback shutterCallback = new ShutterCallback() {
           public void onShutter() {
                  System.out.println("shutterCallback");
           }
          };

          PictureCallback rawCallback = new PictureCallback() {
           public void onPictureTaken(byte[] data, Camera camera) {
                  System.out.println("onPictureTaken");
           }
          };

          PictureCallback jpegCallback = new PictureCallback() {
           public void onPictureTaken(byte[] data, Camera camera) {
                  System.out.println("jpegCallback");
                  FileOutputStream outStream = null;
                  try {
                  System.out.println("jpegCallback begin");
                     camera.startPreview();
                     File storagePath =  new File("/mnt/sdcard/");
                     File myImage = new File(storagePath, "example2.jpg");
                     outStream = new FileOutputStream(myImage); 
                     outStream.write(data);
                     outStream.close();
                    } catch (FileNotFoundException e) {
                          System.out.println("jpegCallback FileNotFoundException");
                     e.printStackTrace();
                    } catch (IOException e) {
                          System.out.println("jpegCallback IOException");
                     e.printStackTrace();
                    } finally {
                     camera.stopPreview();
                     camera.release();
                    }
            }
          };

          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
              for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
              Camera.CameraInfo info = new Camera.CameraInfo();
              Camera.getCameraInfo(i, info);
              if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
                     try{
                             Camera camera = Camera.open(i);
                             Camera.Parameters parameters = camera.getParameters();
                             camera.setParameters(parameters);
                              camera.startPreview();
                             camera.setPreviewDisplay(null);
                              System.out.println("takePicture ahead");
                             camera.takePicture(null, rawCallback, jpegCallback);
                              System.out.println("takePicture finish");
                            }
                            catch (Exception e){
                                  System.out.println("printStackTrace");
                                     e.printStackTrace();
                            }
                    }
                }
            }  
    }

详细问题是:

---

在Android4.1和4.2中,有三个例外:
1.由"Camera camera = Camera.open(i);"引发

11-26 00:36:29.144: D/DOMX(132): ERROR: failed check:status >= 0 - returning error: 0x81000 - Can't connect
11-26 00:36:29.144: D/DOMX(132): ERROR: failed check:eRPCError == RPC_OMX_ErrorNone - returning error: 0x80001001 - Error initializing RPC
11-26 00:36:29.144: D/DOMX(132): ERROR: failed check:hRPCCtx != NULL - returning error: 0x81001 - NULL context handle supplied to RPC Deinit
11-26 00:36:29.144: D/DOMX(132): ERROR: rror in Initializing Proxy
11-26 00:36:29.144: E/CameraHAL(132): OMX_GetHandle() failed, error: 0x80001001

2.由"camera.startPreview();"暂停

11-26 00:36:30.488: D/DOMX(132): ERROR: failed check:(eError == OMX_ErrorNone) || (eError == OMX_ErrorNoMore) - returning error: 0x80001005 - Error returned from OMX API in ducati
11-26 00:36:30.488: E/CameraHAL(132): Error while configuring rotation 0x80001005

3.由"camera.takePicture()"暂停

11-26 00:36:30.495: E/CameraHAL(132): Adapter state switch INTIALIZED_STATE Invalid Op! event = 0x13
11-26 00:36:30.738: D/DOMX(132): ERROR: failed check:(eError == OMX_ErrorNone) || (eError == OMX_ErrorNoMore) - returning error: 0x80001005 - Error returned from OMX API in ducati
11-26 00:36:30.738: E/CameraHAL(132): Exiting function UseBuffersCapture because of ret 0 eError=80001005

因此,结果是即使在像Galaxy Nexus i9250这样的普通设备中,也不会在Jelly Bean中拍摄照片.

---

接下来,在Android2.3中,有两部分例外:
1.由"Camera camera = Camera.open(i);"引发

E/CameraSettings(1235): Param type 53 not supported        
E/CameraSettings(1235): Param type 51 not supported        
E/CameraSettings(1235): Param type 50 not supported  

2.即便如此,仍然可以执行camera.takePicture().结果显示图片被拍摄.除了一个问题:"E/MemoryHeapBase(1235):mmap(fd = 50,size = 0)失败(无效参数)"

11-26 01:28:33.835: I/AwesomePlayer(1235): prepareAsync_l
11-26 01:28:33.835: D/CameraHal(1235): Capture size 2048x1536, res enum 3
11-26 01:28:33.835: I/AwesomePlayer(1235): prepareAsync_l
11-26 01:28:33.835: D/CameraHal(1235): Setting capture format 0 header 2
11-26 01:28:33.835: I/HPAndroidHAL(1235): APILOG: SetCaptureDataFormat (1 2 0)
11-26 01:28:33.835: D/CameraHal(1235): Thumbnail enabled
11-26 01:28:33.843: E/MemoryHeapBase(1235): mmap(fd=50, size=0) failed (Invalid argument)
11-26 01:28:33.843: D/CameraHal(1235): Initializing capture memory raw: 0x42ee6000 (6295552), jpg: 0x434e7000 (3147776), pv 0xffffffff (0)
11-26 01:28:33.843: I/HPAndroidHAL(1235): APILOG: InitializeCaptureMemory(3 3147776 0x434e7000 6295552 0x42ee6000 0 0xffffffff)
11-26 01:28:33.843: I/HPAndroidHAL(1235): APILOG: InitializeCaptureMemoryBuffers(3 1 0_0x42de5d9c 6295552_0x42de5dc0 3147776_0x42de5d94 0_0x42de5dc8)
11-26 01:28:33.843: I/HPAndroidHAL(1235): APILOG: SetCaptureS2 with finish3A = 1
11-26 01:28:33.843: I/VorbisDecoder(1235): mNumChannels=1, mSampleRate=44100
11-26 01:28:33.843: E/OMXCodec(1235): Successfully allocated software codec 'VorbisDecoder'
11-26 01:28:33.843: I/VorbisDecoder(1235): mNumChannels=1, mSampleRate=44100
11-26 01:28:33.843: E/OMXCodec(1235): Successfully allocated software codec 'VorbisDecoder'
11-26 01:28:33.851: I/AwesomePlayer(1235): play_l
11-26 01:28:33.851: I/AwesomePlayer(1235): play_l
11-26 01:28:33.874: I/AwesomePlayer(1235): pause_l 1
11-26 01:28:33.874: I/AwesomePlayer(1235): reset_l
11-26 01:28:33.874: I/ExtendFileSource(1235): release pFilename = 0xfb690
11-26 01:28:33.874: I/AwesomePlayer(1235): reset_l
11-26 01:28:33.874: I/AwesomePlayer(1235): reset_l
11-26 01:28:33.882: I/AwesomePlayer(1235): pause_l 1
11-26 01:28:33.882: I/AwesomePlayer(1235): reset_l
11-26 01:28:33.882: I/ExtendFileSource(1235): release pFilename = 0xf9098
11-26 01:28:33.882: I/AwesomePlayer(1235): reset_l
11-26 01:28:33.882: I/AwesomePlayer(1235): reset_l

因此,在Android2.3中,拍摄照片后都不会调用shutterCallback,rawCallback和jpegCallback.

---

之后,在Android2.2中,在拍摄照片后调用shutterCallback和rawCallback.但它们都不能为我提供数据(字节流).正如http://developer.android.com/reference/android/hardware/Camera.html#takePicture(android.hardware.Camera.ShutterCallback,android.hardware.Camera.PictureCallback,android.hardware.Camera.PictureCallback)中所介绍的 ,如果没有可用的原始图像回调缓冲区或原始图像回调缓冲区不足以容纳原始图像,则数据将为null.我确实在rawCallback中获得了null数据.

---

是否所有这些人员都是由硬件不兼容或代码错误造成的？
请帮忙

Answer 1

希望你现在已经解决了你的问题，但我认为你遇到的问题是你将相机预览设置为空，并且它需要一个有效的SurfaceView预览来​​打开闪光灯（至少在 Galaxy Nexus 上）以及其他一些三星设备...）

罪魁祸首：

 camera.setPreviewDisplay(null);

可能的解决方案：

将 a 添加SurfaceView到您的布局并将其大小指定为 1px x 1px。看起来它必须至少有那么大（大小为 0 会产生不同的错误）。可能会出现SurfaceView屏幕外的情况（滚动或RelativeLayout其他）