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我想從相機作爲服務使用圖像。並使用下面的代碼,我從什麼地方上google-在後臺服務中從相機中捕捉圖像
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.IBinder;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class CameraService extends Service
{
//Camera variables
//a surface holder
private SurfaceHolder sHolder;
//a variable to control the camera
private Camera mCamera;
//the camera parameters
private Parameters parameters;
boolean mPreviewRunning = false;
/** Called when the activity is first created. */
@Override
public void onCreate()
{
super.onCreate();
}
@Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);
mCamera = Camera.open();
SurfaceView sv = new SurfaceView(getBaseContext());
try {
Camera.Parameters p = mCamera.getParameters();
mCamera.setParameters(p);
mCamera.startPreview();
mCamera.takePicture(null, null, mPictureCallback);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Get a surface
sHolder = sv.getHolder();
//tells Android that this surface will have its data constantly replaced
sHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
public void onPictureTaken(byte[] imageData, Camera c) {
Log.e("Callback TAG", "Here in jpeg Callback");
if (imageData != null) {
FileOutputStream outputStream = null;
try {
outputStream = new FileOutputStream("/sdcard/car_final/Image.jpg");
outputStream.write(imageData);
// Removed the finish call you had here
} catch (Exception e) {
e.printStackTrace();
} finally {
if (outputStream != null) try {
outputStream.close();
} catch (IOException ex) {
// TODO Auto-generated catch block
ex.printStackTrace();
}
}
}
}
};
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
請幫助我。我搜查了但沒有收到任何東西。 在此先感謝。
此代碼可能會在某些設備上運行。它使用不受支持的功能:未連接到窗口的SurfaceView。實際上,可以從服務中準備一個將在Window上的View。 –
你是對的這段代碼適用於某些設備,並且不適用於其他設備。謝謝回覆。 –
[android - 使用後臺服務中的相機]的可能重複(http://stackoverflow.com/questions/6901542/android-use-camera-from-within-background-service) –