Hi, I have a problem with an app that lets the user take a picture.
I've posted it on some forums already, but nobody seems to recognize
the problem. Hopefully someone here knows a solution :)
I've put the code of taking a picture in a seperate activity. Then I
call the camera intent from my main activity using activityForResult.
In the camera intent, I use putExtra to return the camera image (as a
byte[] without doing anything to it). But when the program transitions
back from the camera intent to the parent intent that called it I get
a Failed Binder Transaction error in the logcat because the byte[] is
too big. But I don't understand this, because the image is not even
taken using the maximum resolution :S
The code of my camera intent is:
package example.imaging.ape;
import java.io.IOException;
import java.util.Iterator;
import java.util.Set;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnTouchListener;
public class TakePicture extends Activity implements
SurfaceHolder.Callback{
Camera mCamera;
Boolean mPreviewRunning = false;
int imageLayoutHeight;
int imageLayoutWidth;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setup camera surface
getWindow().setFormat(PixelFormat.TRANSLUCENT);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.cameralayout);
SurfaceView mSurfaceView = (SurfaceView)
findViewById(R.id.hist_surface_camera);
SurfaceHolder mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Bundle extras = getIntent().getExtras();
imageLayoutHeight = extras.getInt("layoutHeight");
imageLayoutWidth = extras.getInt("layoutWidth");
OnTouchListener touchListener = new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent e) {
System.out.println("MAKING PICTURE");
mCamera.autoFocus(cb);
return false;
}
};
//setup touch listener
mSurfaceView.setOnTouchListener(touchListener);
}
AutoFocusCallback cb = new AutoFocusCallback() {
public void onAutoFocus(boolean success, Camera c) {
c.takePicture(null, null, mPictureCallback);
}
};
Camera.PictureCallback mPictureCallback = new
Camera.PictureCallback() {
public void onPictureTaken(byte[] imageData, Camera c) {
System.out.println("Picture taken, now
returning");
Intent resultIntent = new Intent();
resultIntent.putExtra("cameraImage", imageData);
System.out.println("put Extra");
setResult(Activity.RESULT_OK, resultIntent);
finish();
}
};
//initialize camera
public void surfaceCreated(SurfaceHolder holder) {
mCamera = Camera.open();
}
public void surfaceChanged(SurfaceHolder holder, int format, int
w, int h) {
if (mPreviewRunning) {
mCamera.stopPreview();
}
Camera.Parameters p = mCamera.getParameters();
p.setPreviewSize(h, w);
System.out.println("PreviewSize: " + h + "," + w);
p.setPictureSize(h*3,w*3); // is around 1200x900
p.set("rotation", 90);
mCamera.setParameters(p);
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException e) {
e.printStackTrace();
}
mCamera.startPreview();
mPreviewRunning = true;
}
public void surfaceDestroyed(SurfaceHolder holder) {
mCamera.stopPreview();
mPreviewRunning = false;
mCamera.release();
}
}
And this is how I call the camera activity:
Intent intent = new Intent(mainActivity.this, TakePicture.class);
intent.putExtra("layoutWidth",layoutWidth);
intent.putExtra("layoutHeight",layoutHeight);
startActivityForResult(intent,0);
The onActivityResult is never reached because the error occurs during
the transition between intents.
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