adjust Photo Rotation - Android Graphics

Android examples for Graphics:Bitmap Rotate

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Description

adjust Photo Rotation

Demo Code


//package com.book2s;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;

public class Main {
    public static Bitmap adjustPhotoRotation(Bitmap bm,
            final int orientationDegree) {

        Matrix m = new Matrix();
        m.setRotate(orientationDegree, (float) bm.getWidth() / 2,
                (float) bm.getHeight() / 2);
        float targetX, targetY;
        if (orientationDegree == 90) {
            targetX = bm.getHeight();/*from w  w  w .java 2s .c om*/
            targetY = 0;
        } else {
            targetX = bm.getHeight();
            targetY = bm.getWidth();
        }

        final float[] values = new float[9];
        m.getValues(values);

        float x1 = values[Matrix.MTRANS_X];
        float y1 = values[Matrix.MTRANS_Y];

        m.postTranslate(targetX - x1, targetY - y1);

        Bitmap bm1 = Bitmap.createBitmap(bm.getHeight(), bm.getWidth(),
                Bitmap.Config.ARGB_8888);

        Paint paint = new Paint();
        Canvas canvas = new Canvas(bm1);
        canvas.drawBitmap(bm, m, paint);

        return bm1;
    }
}

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