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Fix android tutorial 3 second picture taken bug

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This commit is contained in:
poiuytrez 2013-04-24 12:38:15 +02:00
parent a9a269505c
commit 60bf018781
1 changed files with 28 additions and 24 deletions
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52
samples/android/tutorial-3-cameracontrol/src/org/opencv/samples/tutorial3/Tutorial3View.java
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@ -6,17 +6,16 @@ import java.util.List;
import org.opencv.android.JavaCameraView;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.Size;
import android.util.AttributeSet;
import android.util.Log;
public class Tutorial3View extends JavaCameraView {
public class Tutorial3View extends JavaCameraView implements PictureCallback {
private static final String TAG = "Sample::Tutorial3View";
private String mPictureFileName;
public Tutorial3View(Context context, AttributeSet attrs) {
super(context, attrs);
@ -56,26 +55,31 @@ public class Tutorial3View extends JavaCameraView {
}
public void takePicture(final String fileName) {
Log.i(TAG, "Tacking picture");
PictureCallback callback = new PictureCallback() {
Log.i(TAG, "Taking picture");
this.mPictureFileName = fileName;
// Call to garbage collector to avoid bug http://code.opencv.org/issues/2961
System.gc();
private String mPictureFileName = fileName;
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.i(TAG, "Saving a bitmap to file");
Bitmap picture = BitmapFactory.decodeByteArray(data, 0, data.length);
try {
FileOutputStream out = new FileOutputStream(mPictureFileName);
picture.compress(Bitmap.CompressFormat.JPEG, 90, out);
picture.recycle();
mCamera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
}
};
mCamera.takePicture(null, null, callback);
// PictureCallback is implemented by the current class
mCamera.takePicture(null, null, this);
}
}
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.i(TAG, "Saving a bitmap to file");
// The camera preview was automatically stopped. Start it again.
mCamera.startPreview();
// Write the image in a file (in jpeg format)
try {
FileOutputStream fos = new FileOutputStream(mPictureFileName);
fos.write(data);
fos.close();
} catch (java.io.IOException e) {
Log.e("PictureDemo", "Exception in photoCallback", e);
}
}
}