Rotate image in android

Question

I want rotate image in both the ways Clockwise as well as Anti clock wise. I had try but not rotate image both the way, so plz give me solution for my problem if you know..

Answer 1

use this code hope it will be helpful... you must have to write this method to do rotate operation

public void paintFromCenter(float angle, Canvas c) {
    Bitmap b = sprite;
    Bitmap h = b;
    Matrix matrix = new Matrix();
    matrix.postRotate(angle, h.getWidth() / 2, h.getHeight());
    matrix.postTranslate(getX(), getY());
    // canvas.drawBitmap(bitmap, matrix, new Paint());
    Bitmap bmp2 = Bitmap.createBitmap(h, 0, 0, frameWidth, frameHeight,
            matrix, true);
    c.drawBitmap(h, matrix, null);
}

in your program you have to write onTouchEvent() method

public boolean onTouchEvent(MotionEvent event) {
    int action = event.getAction();
    if (action == MotionEvent.ACTION_DOWN) {
        edX = (int) event.getX();
        edY = (int) event.getY();
        if ((edX > objectSprite.getX()
                && edX < objectSprite.getX() + objectSprite.getWidth()
                && edY > objectSprite.getY() && edY < objectSprite.getY()
                + objectSprite.getHeight())) {
        }
    }
    if (action == MotionEvent.ACTION_MOVE) {
        emX = (int) event.getX();
        emY = (int) event.getY();
        if (edX < emX && angle <= 90) {
            update(canvas);
            CHAR = 'D';
        } else if (edX > emX && angle > 0) {
            update(canvas);
            CHAR = 'U';
        }
        if (edY < emY && angle <= 90) {
            update(canvas);
            CHAR = 'L';
        } else if (edY > emY && angle >= 0) {
            update(canvas);
            CHAR = 'R';
        }
    }
    return true;
}

and you have to create update() method to rotate your angle on touch event angle can be define as your choice. Initially i have declare

int angle=1;
public void update(Canvas canvas) {
    switch (CHAR) {
    case 'D':
        angle += 1;
        break;
    case 'U':
        angle -= 1;

        break;
    case 'R':
        angle -= 1;
        break;
    case 'L':
        angle += 1;
        break;
    }

}

Now you have to draw your object in draw() method like this

public void draw() {
  objectSprite.paintFromCenter(angle, canvas);  
        }