Hi all,
I am trying to build a simple camera view as part of my application.
I want it to work just like the built in camera What you see is what
you get. It doesn't auto correct rotation and the resultant photo is
in the right orientation.
What is happening in my Cameraview is that when i hold the phone in
portrait (like a normal phone) what i see is rotated 90 degrees anti
clockwise. The only time the camera shows me what i want to see is
when I hold it rotated 90 degrees anti clockwise. As i rotate the
phone it flickers and changes my display rotation. I just want it to
be fixed so that i always see a preview the right way up, no matter
which rotation I hold the phone.
I have searched lots of forums, I have even tried looking at the
android camera code but I have added some orientation code and it
doesn't seem to do anything. The only way i got it to work was to use
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE)
in the SurfaceCreated method. But the resultant photos are rotated
incorrectly.
Can anyone give me a guiding hand in this please? I will put my code
beneath so you can see what i am doing wrong!
package com.pengilleys.fishingsnapz;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.view.OrientationEventListener;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;
public class CameraView extends Activity implements
SurfaceHolder.Callback{
private Camera mCamera;
private boolean mPreviewRunning=true;
private Context mContext = this;
private static String fullImagePath = "";
private OrientationEventListener mOrientationListener;
private int mLastOrientation = 0; // No rotation (landscape) by
default.
private Parameters mParameters;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
getWindow().setFormat(PixelFormat.TRANSLUCENT);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.camera_layout);
SurfaceView mSurfaceView = (SurfaceView)
findViewById(R.id.surface_camera);
SurfaceHolder mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mOrientationListener = new
OrientationEventListener(CameraView.this)
{
public void onOrientationChanged(int orientation) {
// We keep the last known orientation. So if the user
// first orient the camera then point the camera to
if (orientation != 0) {
orientation += 90;
}
if (orientation != mLastOrientation) {
mLastOrientation = orientation;
}
}
};
//Button snap = (Button)findViewById(R.id.snap);
//snap.setOnClickListener(new View.OnClickListener(){
mSurfaceView.setOnClickListener(new OnClickListener(){
public void onClick(View v){
try{
mCamera.autoFocus(new
Camera.AutoFocusCallback() {
public void
onAutoFocus(boolean success, Camera camera) {
mCamera.takePicture(null, mPictureCallback,
mPictureCallback);
}
});
}catch(Exception e){
Toast.makeText(getApplicationContext(), e.toString(),
Toast.LENGTH_LONG).show();
}
}});
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int w,
int h) {
if (mPreviewRunning) {
mCamera.stopPreview();
}
Camera.Parameters p = mCamera.getParameters();
p.setPreviewSize(w, h);
mCamera.setParameters(p);
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException e) {
e.printStackTrace();
}
mCamera.startPreview();
mPreviewRunning = true;
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mOrientationListener.enable();
//this.setRequestedOrientation
//(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
mCamera = Camera.open();
try{
mCamera.setPreviewDisplay(holder);
}catch(IOException e){
mCamera.release();
mCamera = null;
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
//mCamera.stopPreview();
mPreviewRunning = false;
mCamera.release();
}
Camera.PictureCallback mPictureCallback = new
Camera.PictureCallback() {
public void onPictureTaken(byte[] imageData, Camera c) {
mParameters.setRotation(mLastOrientation);
try{
if(imageData!=null){
StoreByteImage(getApplicationContext(),imageData,100,"Imagename");
try{
Intent mIntent = new
Intent(mContext,SnapDetails.class);
mIntent.putExtra("imgPath",fullImagePath);
startActivityForResult(mIntent,1);
//finish();
}catch(Exception e){
Toast.makeText(mContext, e.toString(),
Toast.LENGTH_LONG);
}
}
}catch(Exception e){
e.printStackTrace();
}
}
};
public static boolean StoreByteImage(Context mContext, byte[]
imageData,
int quality, String expName) {
try{
File sdImageMainDir = new File("/sdcard/fishsnapz/");
sdImageMainDir.mkdir();
Bitmap bitmap =
BitmapFactory.decodeByteArray(imageData, 0,
imageData.length, null) ;
String fileName =
Long.toString(System.currentTimeMillis()) +
"jpg";
fullImagePath = sdImageMainDir + fileName;
FileOutputStream output = new
FileOutputStream(fullImagePath);
BufferedOutputStream buf = new
BufferedOutputStream(output);
bitmap.compress(Bitmap.CompressFormat.JPEG, quality,
buf);
buf.flush();
buf.close();
}catch(FileNotFoundException e){
Toast.makeText(mContext, e.toString(),
Toast.LENGTH_LONG).show();
}catch(IOException e){
Toast.makeText(mContext, e.toString(),
Toast.LENGTH_LONG).show();
}
return true;
}
protected void onResume() {
super.onResume();
// mCamera.startPreview();
}
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
protected void onStop() {
super.onStop();
}
protected void onPause(){
//mCamera.release();
super.onPause();
}
}
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
