Re: [android-developers] Canvas problem using drawing square around face
how to attach your contact with bluetooth,like: Intent intent = new Intent(Intent.ACTION_SEND); intent.setClassName(com.android.bluetooth, com.android.bluetooth.opp.BluetoothOppLauncherActivity); intent.putExtra(Intent.EXTRA_STREAM, Uri.parse( file:///sdcard/caixin.png)); // imageUri set previously intent.setType(image/png); startActivity(intent); but i don't konw the contract path,so how can i get?? 2011/4/9, Ian Menzies bumde...@gmail.com: Hey guys, I have a program that successfully accesses a gallery, allows a user to select a picture from that gallery, and display that pic to the user. I have tried to add a facedetector into this program but some issues have arised, the picture is still displayed to the user but when I try to use canvas to draw an image around a face within a picture it doesnt and the picture is shown without any square. Im not sure whether its an issue with Identifying the face or drawing a square around the face. Any help would be really appreciated. Thanks for your time. The code is as follows [code] public class Activity3 extends Activity { private static final int ACTIVITY_SELECT_IMAGE = 1; private static final int GALLERY_ID = Menu.FIRST + 1; public String mCurrentImagePath = null; public int imageWidth, imageHeight; public int numberOfFace = 5; public FaceDetector myFaceDetect; public FaceDetector.Face[] myFace; float myEyesDistance; int numberOfFaceDetected; Bitmap bitmap; public Canvas canvas; private ImageView mImageView; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mImageView = new ImageView(this); setContentView(mImageView); } // the canvas is below public void onDraw(Canvas c) { // TODO Auto-generated method stub canvas.drawBitmap(bitmap, 0, 0, null); Paint myPaint = new Paint(); myPaint.setColor(Color.GREEN); myPaint.setStyle(Paint.Style.STROKE); myPaint.setStrokeWidth(3); for(int i=0; i numberOfFaceDetected; i++) { Face face = myFace[i]; PointF myMidPoint = new PointF(); face.getMidPoint(myMidPoint); myEyesDistance = face.eyesDistance(); c.drawRect( (int)(myMidPoint.x - myEyesDistance), (int)(myMidPoint.y - myEyesDistance), (int)(myMidPoint.x + myEyesDistance), (int)(myMidPoint.y + myEyesDistance), myPaint); } } //adds a menu @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, GALLERY_ID, 0, Gallery); return true; } //if gallery is chosen begin activity and allow user to select a pic from the gallery @Override public boolean onMenuItemSelected(int featureId, MenuItem item) { switch (item.getItemId()) { case GALLERY_ID: Intent galleryIntent = new Intent(Intent.ACTION_PICK, Images.Media.INTERNAL_CONTENT_URI); startActivityForResult(galleryIntent, ACTIVITY_SELECT_IMAGE); return true; } return super.onMenuItemSelected(featureId, item); } //when the user has selected an image and no error has been occurred retrieve the image detect faces within the image and display the image. @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == ACTIVITY_SELECT_IMAGE resultCode == RESULT_OK) { try { Uri currImageURI = data.getData(); String[] proj = { Images.Media.DATA, Images.Media.ORIENTATION }; Cursor cursor = managedQuery(currImageURI, proj, null, null,null); int columnIndex = cursor.getColumnIndex(proj[0]); cursor.moveToFirst(); mCurrentImagePath = cursor.getString(columnIndex); BitmapFactory.Options BitmapFactoryOptionsbfo = new BitmapFactory.Options(); BitmapFactoryOptionsbfo.inPreferredConfig = Bitmap.Config.RGB_565; bitmap = BitmapFactory.decodeFile(mCurrentImagePath); int width = bitmap.getWidth(); int height = bitmap.getHeight(); myFace = new FaceDetector.Face[numberOfFace];
[android-developers] Canvas problem using drawing square around face
Hey guys, I have a program that successfully accesses a gallery, allows a user to select a picture from that gallery, and display that pic to the user. I have tried to add a facedetector into this program but some issues have arised, the picture is still displayed to the user but when I try to use canvas to draw an image around a face within a picture it doesnt and the picture is shown without any square. Im not sure whether its an issue with Identifying the face or drawing a square around the face. Any help would be really appreciated. Thanks for your time. The code is as follows [code] public class Activity3 extends Activity { private static final int ACTIVITY_SELECT_IMAGE = 1; private static final int GALLERY_ID = Menu.FIRST + 1; public String mCurrentImagePath = null; public int imageWidth, imageHeight; public int numberOfFace = 5; public FaceDetector myFaceDetect; public FaceDetector.Face[] myFace; float myEyesDistance; int numberOfFaceDetected; Bitmap bitmap; public Canvas canvas; private ImageView mImageView; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mImageView = new ImageView(this); setContentView(mImageView); } // the canvas is below public void onDraw(Canvas c) { // TODO Auto-generated method stub canvas.drawBitmap(bitmap, 0, 0, null); Paint myPaint = new Paint(); myPaint.setColor(Color.GREEN); myPaint.setStyle(Paint.Style.STROKE); myPaint.setStrokeWidth(3); for(int i=0; i numberOfFaceDetected; i++) { Face face = myFace[i]; PointF myMidPoint = new PointF(); face.getMidPoint(myMidPoint); myEyesDistance = face.eyesDistance(); c.drawRect( (int)(myMidPoint.x - myEyesDistance), (int)(myMidPoint.y - myEyesDistance), (int)(myMidPoint.x + myEyesDistance), (int)(myMidPoint.y + myEyesDistance), myPaint); } } //adds a menu @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, GALLERY_ID, 0, Gallery); return true; } //if gallery is chosen begin activity and allow user to select a pic from the gallery @Override public boolean onMenuItemSelected(int featureId, MenuItem item) { switch (item.getItemId()) { case GALLERY_ID: Intent galleryIntent = new Intent(Intent.ACTION_PICK, Images.Media.INTERNAL_CONTENT_URI); startActivityForResult(galleryIntent, ACTIVITY_SELECT_IMAGE); return true; } return super.onMenuItemSelected(featureId, item); } //when the user has selected an image and no error has been occurred retrieve the image detect faces within the image and display the image. @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == ACTIVITY_SELECT_IMAGE resultCode == RESULT_OK) { try { Uri currImageURI = data.getData(); String[] proj = { Images.Media.DATA, Images.Media.ORIENTATION }; Cursor cursor = managedQuery(currImageURI, proj, null, null,null); int columnIndex = cursor.getColumnIndex(proj[0]); cursor.moveToFirst(); mCurrentImagePath = cursor.getString(columnIndex); BitmapFactory.Options BitmapFactoryOptionsbfo = new BitmapFactory.Options(); BitmapFactoryOptionsbfo.inPreferredConfig = Bitmap.Config.RGB_565; bitmap = BitmapFactory.decodeFile(mCurrentImagePath); int width = bitmap.getWidth(); int height = bitmap.getHeight(); myFace = new FaceDetector.Face[numberOfFace]; myFaceDetect = new FaceDetector(width, height, numberOfFace); numberOfFaceDetected = myFaceDetect.findFaces(bitmap, myFace); canvas= new Canvas(); mImageView.setImageBitmap(bitmap); } catch (Exception e) { } } } } [/code] -- 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
[android-developers] canvas problem
i am making a application in which i need to draw a circle in the middle of the screen with with variable radius everytime with this i have to put few text boxes and buttons on the view to draw the circle i use canvas and to add buttons and text boxes i put linear layout but i am not able to do this together ,either canvas is visible or linearlayout is visible my question is how to add buttons and textbox on top of canvas i need to write on click event of these buttons and textboxes -- 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