खंड के अंदर खुला कैमरा

Question

क्या कैमरे का उपयोग टुकड़े में देखने के लिए संभव है, ताकि यह एक और ऐप नहीं खोल सके और मेरे से दूर जा सके? कैमरे के साथ SurfaceView की तरह कुछ?

Answer 1

हाँ, यह है, इस पोस्ट की जाँच करें: https://www.airpair.com/android/android-camera-surface-view-fragment

मूल रूप से SurfaceView overwritting और कैमरा चित्र कॉलबैक को एकीकृत।

/* Surface on which the camera projects it's capture results. 
*/ 
class CameraPreview extends SurfaceView implements SurfaceHolder.Callback { 
     SurfaceHolder mHolder; 
     Camera mCamera; 

     public CameraPreview(Context context, Camera camera) { 
      super(context); 
      mCamera = camera; 

      // Install a SurfaceHolder.Callback so we get notified when the 
      // underlying surface is created and destroyed. 
      mHolder = getHolder(); 
      mHolder.addCallback(this); 
      // deprecated setting, but required on Android versions prior to 3.0 
      mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
     } 

     public void surfaceCreated(SurfaceHolder holder) { 
      // The Surface has been created, now tell the camera where to draw the preview. 
      try { 
       mCamera.setPreviewDisplay(holder); 
       mCamera.startPreview(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 

     public void surfaceDestroyed(SurfaceHolder holder) { 
      // empty. Take care of releasing the Camera preview in your activity. 
     } 

     public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 
      // If your preview can change or rotate, take care of those events here. 
      // Make sure to stop the preview before resizing or reformatting it. 

      if (mHolder.getSurface() == null){ 
       // preview surface does not exist 
       return; 
      } 

      // stop preview before making changes 
      try { 
       mCamera.stopPreview(); 
      } catch (Exception e){ 
       // ignore: tried to stop a non-existent preview 
      } 

      // set preview size and make any resize, rotate or 
      // reformatting changes here 

      // start preview with new settings 
      try { 
       mCamera.setPreviewDisplay(mHolder); 
       mCamera.startPreview(); 

      } catch (Exception e){ 
       e.printStackTrace(); 
      } 
     } 
    } 

की तरह एक कैमरा चित्र कॉलबैक साथ

:

private Camera.PictureCallback mPicture = new Camera.PictureCallback() { 

     @Override 
     public void onPictureTaken(byte[] data, Camera camera) { 

      File pictureFile = getOutputMediaFile(); 
      if (pictureFile == null){ 
       Toast.makeText(getActivity(), "Image retrieval failed.", Toast.LENGTH_SHORT) 
       .show(); 
       return; 
      } 

      try { 
       FileOutputStream fos = new FileOutputStream(pictureFile); 
       fos.write(data); 
       fos.close(); 
      } catch (FileNotFoundException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 
    }; 

Answer 2

मूल निवासी कार्यान्वयन रास्ता बेहतर है।

एक्सएमएल

<com.google.android.cameraview.CameraView 
android:id="@+id/camera" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:keepScreenOn="true" 
android:adjustViewBounds="true" 
app:autoFocus="true" 
app:aspectRatio="4:3" 
app:facing="back" 
app:flash="auto"/> 

अंदर गतिविधि/टुकड़ा

प्रारंभ कैमरा

mCameraView.start(); 

रोक कैमरा

mCameraView.stop(); 

Open source: Google