好吧,这次我再次更新了我的问题。
我已逐一测试了Galaxy Nexus(JB),Moto-XX(GB),SAMSUNG(Froyo)上的以下代码,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();
}
}
}
}
}
在Android4.1&amp; 4.2 中,有三部分例外:
1.由“相机相机= 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();”引发
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()”
启动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,图片也不会在Jelly Bean中拍摄。
接下来,Android2.3中的 ,有两部分例外:
1.由“相机相机= 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.但即便如此,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,Android2.3中的,在拍摄照片后都不会调用shutterCallback,rawCallback和jpegCallback 。
之后,Android2.2中的 ,拍照后会调用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)中所介绍的那样 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中获取空数据。
这些人员是由硬件不兼容还是代码错误造成的?
请帮助
答案 0 :(得分:2)
希望您现在已经解决了问题,但我认为您遇到的问题是您将相机预览设置为null,并且需要有效的SurfaceView
作为预览来关闭闪光灯(至少在Galaxy Nexus和其他一些三星设备上......)
罪魁祸首:
camera.setPreviewDisplay(null);
可能的解决方案:
在布局中添加SurfaceView
,并将其大小指定为1px xpx。它似乎必须至少那么大(0的大小给出不同的错误)。将SurfaceView
关闭屏幕(滚动关闭或RelativeLayout
或其他内容)可能会有用
答案 1 :(得分:1)
好的,这不是答案,但是我不能发表评论,所以我将以这种形式进行评论: 我可以确认您在我的Galaxy Nexus上遇到的例外情况。
除此之外,但可能有所帮助,我必须在startPreview和takePicture之间添加一个Thread.Sleep(500),如果我想让我的照片变成黑色的话。
那说,我正在读两个摄像头(按顺序同时尝试不起作用),有时一个摄像头工作,另一个产生错误,有时两个都有效,有时无效。
答案 2 :(得分:0)
尝试使用if语句来测试您使用的文件路径是否是这样的真实目录
if(file.isDirectory()){
Log.w("file test---->","filepath is good");
}else{
Log.w("file test---->","filepath is bad");
}
只是说“sdcard”通常是一个坏主意,因为它在多个设备上有所不同。最好创建自己的目录来存储文件。