2013-02-28 13 views
7

Ich arbeite Kamera-Projekt in android.my Problem ist Kamera setDisplayOrientation Methode funktioniert nicht und meine Kamera Vorschau auf der Oberfläche immer Landschaft.Ich möchte zu erwartende Porträtkamera Vorschau auf SurfaceView. Ich bin mit dem Samsung-Galaxie y (Android 2.3.5) und meine Aktivität Code unten gezeigt:Android Kamera setDisplayOrientation funktioniert nicht

import java.io.IOException; 

import android.app.Activity; 
import android.graphics.PixelFormat; 
import android.hardware.Camera; 
import android.os.Bundle; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 
import android.view.View; 
import android.widget.Button; 

public class AndroidCamera extends Activity implements SurfaceHolder.Callback{ 

Camera camera; 
SurfaceView surfaceView; 
SurfaceHolder surfaceHolder; 
boolean previewing = false;; 

String stringPath = "/sdcard/samplevideo.3gp"; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     Button buttonStartCameraPreview = (Button)findViewById(R.id.startcamerapreview); 
     Button buttonStopCameraPreview = (Button)findViewById(R.id.stopcamerapreview); 

     getWindow().setFormat(PixelFormat.UNKNOWN); 
     surfaceView = (SurfaceView)findViewById(R.id.surfaceview); 
     surfaceHolder = surfaceView.getHolder(); 
     surfaceHolder.addCallback(this); 
     surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 

     buttonStartCameraPreview.setOnClickListener(new Button.OnClickListener(){ 

    @Override 
    public void onClick(View v) { 
    // TODO Auto-generated method stub 
    if(!previewing){ 
    camera = Camera.open(); 
    if (camera != null){ 
     try { 
     camera.setDisplayOrientation(90); 
     camera.setPreviewDisplay(surfaceHolder); 
     camera.startPreview(); 
     previewing = true; 
     } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
     } 
    } 
    } 
    }}); 

     buttonStopCameraPreview.setOnClickListener(new Button.OnClickListener(){ 

    @Override 
    public void onClick(View v) { 
    // TODO Auto-generated method stub 
    if(camera != null && previewing){ 
    camera.stopPreview(); 
    camera.release(); 
    camera = null; 

    previewing = false; 
    } 
    }}); 

    } 



@Override 
public void surfaceChanged(SurfaceHolder holder, int format, int width, 
    int height) { 
    // TODO Auto-generated method stub 

} 

@Override 
public void surfaceCreated(SurfaceHolder holder) { 
    // TODO Auto-generated method stub 

} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
    // TODO Auto-generated method stub 

} 
} 

mein Problem gezeigt Schlag Figur:

enter image description here

Jeder kann mit jedem Code oder ein Tutorial helfen Links und vielen dank für die Ausgaben wertvolle Zeit

+0

funktioniert es auf anderen Telefonen ??? oder hast du nur mit diesem versucht? – sheetal

+0

@sheetal habe ich nur mit diesem – Dinesh

Antwort

4

Schließlich bekam ich Lösung und Kameravorschau Oberflächenansicht folgenden Code finden:

import java.io.IOException; 
import java.util.List; 
import android.app.Activity; 
import android.content.Context; 
import android.content.res.Configuration; 
import android.hardware.Camera; 
import android.os.Build; 
import android.util.Log; 
import android.view.Display; 
import android.view.Surface; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 

public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback { 
    private SurfaceHolder mHolder; 
    private Camera mCamera; 

    private static boolean DEBUGGING = true; 
    private static final String LOG_TAG = "CameraPreviewSample"; 
    private static final String CAMERA_PARAM_ORIENTATION = "orientation"; 
    private static final String CAMERA_PARAM_LANDSCAPE = "landscape"; 
    private static final String CAMERA_PARAM_PORTRAIT = "portrait"; 
    protected Activity mActivity; 

    protected List<Camera.Size> mPreviewSizeList; 
    protected List<Camera.Size> mPictureSizeList; 
    protected Camera.Size mPreviewSize; 
    protected Camera.Size mPictureSize; 


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

     mActivity=(Activity)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) { 
      Log.d("CameraView", "Error setting camera preview: " + e.getMessage()); 
     } 
    } 

    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 { 
      Camera.Parameters cameraParams = mCamera.getParameters(); 
      boolean portrait = isPortrait(); 
      configureCameraParameters(cameraParams, portrait); 

      mCamera.setPreviewDisplay(mHolder); 
      mCamera.startPreview(); 

     } catch (Exception e){ 
      Log.d("CameraView", "Error starting camera preview: " + e.getMessage()); 
     } 
    } 

    public void onPause() { 
     mCamera.release(); 
     mCamera = null; 
    } 


    protected void configureCameraParameters(Camera.Parameters cameraParams, boolean portrait) { 
     if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) { // for 2.1 and before 
      if (portrait) { 
       cameraParams.set(CAMERA_PARAM_ORIENTATION, CAMERA_PARAM_PORTRAIT); 
      } else { 
       cameraParams.set(CAMERA_PARAM_ORIENTATION, CAMERA_PARAM_LANDSCAPE); 
      } 
     } else { // for 2.2 and later 
      int angle; 
      Display display = mActivity.getWindowManager().getDefaultDisplay(); 
      switch (display.getRotation()) { 
       case Surface.ROTATION_0: // This is display orientation 
        angle = 90; // This is camera orientation 
        break; 
       case Surface.ROTATION_90: 
        angle = 0; 
        break; 
       case Surface.ROTATION_180: 
        angle = 270; 
        break; 
       case Surface.ROTATION_270: 
        angle = 180; 
        break; 
       default: 
        angle = 90; 
        break; 
      } 
      Log.v(LOG_TAG, "angle: " + angle); 
      mCamera.setDisplayOrientation(angle); 
     } 

     cameraParams.setPreviewSize(mPreviewSize.width, mPreviewSize.height); 
     cameraParams.setPictureSize(mPictureSize.width, mPictureSize.height); 
     if (DEBUGGING) { 
      Log.v(LOG_TAG, "Preview Actual Size - w: " + mPreviewSize.width + ", h: " + mPreviewSize.height); 
      Log.v(LOG_TAG, "Picture Actual Size - w: " + mPictureSize.width + ", h: " + mPictureSize.height); 
     } 

     mCamera.setParameters(cameraParams); 
    } 


    public boolean isPortrait() { 
     return (mActivity.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT); 
    } 
} 

Es Mindest sdk 2.3 oder höher

+2

seine werfen Nullzeiger Fehler bei mPreviewSize.width in setpreviewsize Methode .. – Riser

+0

Nullzeiger Fehler. – hybrid

2

, wenn Sie die Vorschau-Ausgabe drehen möchten, versuchen Sie dies:

public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) 
    {    
     if (isPreviewRunning) 
     { 
      mCamera.stopPreview(); 
     } 

     Parameters parameters = mCamera.getParameters(); 
     Display display = ((WindowManager)getSystemService(WINDOW_SERVICE)).getDefaultDisplay(); 

     if(display.getRotation() == Surface.ROTATION_0) 
     { 
      parameters.setPreviewSize(height, width);       
      mCamera.setDisplayOrientation(90); 
     } 

     if(display.getRotation() == Surface.ROTATION_90) 
     { 
      parameters.setPreviewSize(width, height);       
     } 

     if(display.getRotation() == Surface.ROTATION_180) 
     { 
      parameters.setPreviewSize(height, width);    
     } 

     if(display.getRotation() == Surface.ROTATION_270) 
     { 
      parameters.setPreviewSize(width, height); 
      mCamera.setDisplayOrientation(180); 
     } 

     mCamera.setParameters(parameters); 
     previewCamera();      
    } 
+0

versucht diesen Code habe ich bereits versucht, es funktioniert nicht :( – Dinesh

0

Für niedrigere API-Ebene könnten Sie verwenden:

private void setCameraDisplayOrientationAPI8(){ 
     //Sets the camera right Orientation. 
     //Special void for API 8 build. 
     //This void should be called before calling camera.setParameters(cameraParameters). 
     if (activeActivity.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) 
     { 
      camera.setDisplayOrientation(90); 
     } 
     if (activeActivity.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) 
     {        
      camera.setDisplayOrientation(180); 
     } 
    } 

und rufen Sie einfach setCameraDisplayOrientationAPI8(); auf surfaceChanged Func.

Plus:

private void setCameraDisplayOrientation() { 
     //Sets the camera right Orientation. 
     //IMPORTANT!! This code is available only for API Level 9 build or greater. 
     if (mApiLvl<9){ 
      Log.d(TAG, "setCameraDisplayOrientation ERROR: This code is available only for API Level 9 build or greater."); 
      return; 
     } 
     android.hardware.Camera.CameraInfo info = 
       new android.hardware.Camera.CameraInfo(); 
     android.hardware.Camera.getCameraInfo(cameraIndex, info); 
     int rotation = activeActivity.getWindowManager().getDefaultDisplay() 
       .getRotation(); 
     int degrees = 0; 
     switch (rotation) { 
      case Surface.ROTATION_0: degrees = 0; break; 
      case Surface.ROTATION_90: degrees = 90; break; 
      case Surface.ROTATION_180: degrees = 180; break; 
      case Surface.ROTATION_270: degrees = 270; break; 
     } 

     int result; 
     if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { 
      result = (info.orientation + degrees) % 360; 
      result = (360 - result) % 360; // compensate the mirror 
     } else { // back-facing 
      result = (info.orientation - degrees + 360) % 360; 
     } 
     camera.setDisplayOrientation(result); 
    } 

Hoffnung, das hilft.

1

Auch brauchen ist, zu überprüfen, ob die "Auto-Rotate Screen" Option ist checked in den Telefoneinstellungen (Einstellungen> Dislay oder Bildschirm - hängt von der Android-Version ab).

Es dauerte eine ganze Weile, bis ich es herausgefunden habe. Wenn es nicht aktiviert ist, kann die Ausrichtung der Kamera in der App ignoriert werden.

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