I want to rotate around its center. before writing to a text on drawable

Question

I have a drawable. I want to rotate around its center before writing to a text on drawable

drawable= this.getResources().getDrawable(R.drawable.image);

final int IMAGE_WIDTH = drawable.getIntrinsicWidth();
final int IMAGE_HEIGHT = drawable.getIntrinsicHeight();
Bitmap bitmap = Bitmap.createBitmap(IMAGE_WIDTH, 
                                      IMAGE_HEIGHT, 
                                      Bitmap.Config.ARGB_8888);
Canvas imageCanvas = new Canvas(bitmap); 

Paint imagePaint = new Paint();
imagePaint.setTextAlign(Align.CENTER);
imagePaint.setTextSize(16f);

drawable.draw(imageCanvas);

imageCanvas.drawText("", 
                     IMAGE_WIDTH / 2, 
                     (IMAGE_HEIGHT - imagePaint.ascent()) / 2, 
                     imagePaint);                   

LayerDrawable finalImage = new LayerDrawable(
     new Drawable[]{drawable, new BitmapDrawable(bitmap)});

Perhaps you can do like this http://stackoverflow.com/questions/8712652/rotating-image-on-a-canvas-in-android — Alexander Kulyakhtin, May 23 '13 at 14:32

score 0 · Answer 1 · answered May 23 '13 at 14:46

0

You can use matrix to do all your rotation games and then set it to your canvas.

answered May 23 '13 at 14:46

Ilya Gazman

31,250
24
137
216

score 0 · Answer 2 · answered May 23 '13 at 14:53

0

Best way to do this is View Animation. http://developer.android.com/guide/topics/resources/animation-resource.html#Tween

answered May 23 '13 at 14:53

Amardeep Kumar

142
6

score 0 · Accepted Answer · answered May 24 '13 at 13:06

I found the solution

Bitmap  bmpOriginal = BitmapFactory.decodeResource(this.getResources(), R.drawable.image);                      
                    final int IMAGE_WIDTH = drawable.getIntrinsicWidth();
                    final int IMAGE_HEIGHT = drawable.getIntrinsicHeight();                                         
                    Matrix matrix = new Matrix();
                    matrix.postRotate(rotate);
                    Bitmap resizedBitmap = Bitmap.createBitmap(bmpOriginal, 0, 0,width, height, matrix, true);
                    Canvas imageCanvas = new Canvas(resizedBitmap); 
                    BitmapDrawable bmd = new BitmapDrawable(resizedBitmap);

                    Paint imagePaint = new Paint();
                    imagePaint.setTextAlign(Align.CENTER);
                    imagePaint.setTextSize(14f);

                    bmd.draw(imageCanvas);

                    imageCanvas.drawText("Text", 
                                             IMAGE_WIDTH / 2, 
                                             (IMAGE_HEIGHT - imagePaint.ascent()) / 2, 
                                             imagePaint);                   

                    LayerDrawable finalImage = new LayerDrawable(
                         new Drawable[]{bmd, new BitmapDrawable(resizedBitmap)});

I want to rotate around its center. before writing to a text on drawable

3 Answers3