Android中的自定义相机方向问题

Question

I have an issue of orientation. My camera opens and save image in 90 sideways. How to change the orientation to potrait view. Please help me how to rectify it.

PictureDemo.java

package com.commonsware.android.picture;

import java.io.File;
import java.io.FileOutputStream;
import android.app.Activity;
import android.graphics.ImageFormat;
import android.hardware.Camera;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;

public class PictureDemo extends Activity {
  private SurfaceView preview=null;
  private SurfaceHolder previewHolder=null;
  private Camera camera=null;
  private boolean inPreview=false;
  private boolean cameraConfigured=false;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    preview=(SurfaceView)findViewById(R.id.preview);
    previewHolder=preview.getHolder();
    previewHolder.addCallback(surfaceCallback);
    previewHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
  }

  @Override
  public void onResume() {
    super.onResume();

//    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
//      Camera.CameraInfo info=new Camera.CameraInfo();
//
//      for (int i=0; i < Camera.getNumberOfCameras(); i++) {
//        Camera.getCameraInfo(i, info);
//
//        if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
//          camera=Camera.open(i);
//        }
//      }
//    }

    if (camera == null) {
      camera=Camera.open();

    }

    startPreview();
  }

  @Override
  public void onPause() {
    if (inPreview) {
      camera.stopPreview();
    }

    camera.release();
    camera=null;
    inPreview=false;

    super.onPause();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    new MenuInflater(this).inflate(R.menu.options, menu);

    return(super.onCreateOptionsMenu(menu));
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == R.id.camera) {
      if (inPreview) {
        camera.takePicture(null, null, photoCallback);
        inPreview=false;
      }
    }

    return(super.onOptionsItemSelected(item));
  }

  private Camera.Size getBestPreviewSize(int width, int height,
                                         Camera.Parameters parameters) {
    Camera.Size result=null;

    for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
      if (size.width <= width && size.height <= height) {
        if (result == null) {
          result=size;
        }
        else {
          int resultArea=result.width * result.height;
          int newArea=size.width * size.height;

          if (newArea > resultArea) {
            result=size;
          }
        }
      }
    }

    return(result);
  }

  private Camera.Size getSmallestPictureSize(Camera.Parameters parameters) {
    Camera.Size result=null;

    for (Camera.Size size : parameters.getSupportedPictureSizes()) {
      if (result == null) {
        result=size;
      }
      else {
        int resultArea=result.width * result.height;
        int newArea=size.width * size.height;

        if (newArea < resultArea) {
          result=size;
        }
      }
    }

    return(result);
  }

  private void initPreview(int width, int height) {
    if (camera != null && previewHolder.getSurface() != null) {
      try {
        camera.setPreviewDisplay(previewHolder);
      }
      catch (Throwable t) {
        Log.e("PreviewDemo-surfaceCallback",
              "Exception in setPreviewDisplay()", t);
        Toast.makeText(PictureDemo.this, t.getMessage(),
                       Toast.LENGTH_LONG).show();
      }

      if (!cameraConfigured) {
        Camera.Parameters parameters=camera.getParameters();
        Camera.Size size=getBestPreviewSize(width, height, parameters);
        Camera.Size pictureSize=getSmallestPictureSize(parameters);

        if (size != null && pictureSize != null) {
          parameters.setPreviewSize(size.width, size.height);
          parameters.setPictureSize(pictureSize.width,
                                    pictureSize.height);
          parameters.set("orientation", "portrait"); 
          parameters.setPictureFormat(ImageFormat.JPEG);

          camera.setParameters(parameters);
          //camera.setDisplayOrientation(180);

          cameraConfigured=true;
        }
      }
    }
  }

  private void startPreview() {
    if (cameraConfigured && camera != null) {
     // camera.setDisplayOrientation(45);
      camera.startPreview();

      inPreview=true;
    }
  }

  SurfaceHolder.Callback surfaceCallback=new SurfaceHolder.Callback() {
    public void surfaceCreated(SurfaceHolder holder) {
      // no-op -- wait until surfaceChanged()
    }

    public void surfaceChanged(SurfaceHolder holder, int format,
                               int width, int height) {
      initPreview(width, height);
      startPreview();
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
      // no-op
    }
  };

  Camera.PictureCallback photoCallback=new Camera.PictureCallback() {
    public void onPictureTaken(byte[] data, Camera camera) {
      new SavePhotoTask().execute(data);
      camera.startPreview();
      inPreview=true;
    }
  };

  class SavePhotoTask extends AsyncTask<byte[], String, String> {
    @Override
    protected String doInBackground(byte[]... jpeg) {
      File photo=
          new File(Environment.getExternalStorageDirectory(),
                   "photo.jpg");

      if (photo.exists()) {
        photo.delete();
      }

      try {
        FileOutputStream fos=new FileOutputStream(photo.getPath());

        fos.write(jpeg[0]);
        fos.close();
      }
      catch (java.io.IOException e) {
        Log.e("PictureDemo", "Exception in photoCallback", e);
      }

      return(null);
    }
  }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.commonsware.android.picture"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="11" />

    <supports-screens
        android:largeScreens="false"
        android:normalScreens="true"
        android:smallScreens="false"
        android:xlargeScreens="true" />

    <uses-feature android:name="android.hardware.camera" />
    <uses-feature
        android:name="android.hardware.camera.front"
        android:required="false" />

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:icon="@drawable/cw"
        android:label="@string/app_name" >
        <activity
            android:name=".PictureDemo"
            android:configChanges="keyboardHidden|orientation"
            android:label="@string/app_name"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.view.SurfaceView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/preview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    >
</android.view.SurfaceView>

Answer 1

This code will help you to store image im right rotetion.

final Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length, opt);
        final Matrix matrix = new Matrix();
        if (Utility.isTabletDevice(mContext)) {
            // check Device is Tablet or Mobile
        }
        // opened camera is front or back
        if (frontCamera == Camera.CameraInfo.CAMERA_FACING_FRONT) {
            matrix.postRotate(270);
        } else {
            matrix.postRotate(90);
        }
        width = bitmap.getWidth();
        height = bitmap.getHeight();
        final Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, width, height, true);
        final Bitmap rotatedBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix, true);
        final ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        rotatedBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
        final File f = new File(imagePath);
        f.createNewFile();
        final FileOutputStream fo = new FileOutputStream(f);
        fo.write(bytes.toByteArray());
        fo.flush();
        fo.close();