简书链接:bitmap旋转平移有效的样板代码
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哎、不服老不行了，现在基础都给搞懵逼了。

bitmap旋转90 ，测试是居中旋转的，之前不是距中旋转的代码我有空看看比较下。

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public static Bitmap rotateBitmap(Bitmap origin, float alpha) {
    if (origin == null) {
        return null;
    }
    int width = origin.getWidth();
    int height = origin.getHeight();
    Matrix matrix = new Matrix();
    matrix.setRotate(alpha);
    // 围绕原地进行旋转
    Bitmap newBM = Bitmap.createBitmap(origin, 0, 0, width, height, matrix, false);
    if (newBM.equals(origin)) {
        return newBM;
    }
    origin.recycle();
    return newBM;
}

平移代码 如果设置画笔则能看到移动后被挪开的背景颜色

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    /**
     * 平移代码
     * @param origin
     * @param x
     * @param y
     * @return
     */
    public static Bitmap translateBitmap(Bitmap origin, float x,float y) {
//        Bitmap returnBitmap = Bitmap.createBitmap(origin,0,0,origin.getWidth(),origin.getHeight());
        Bitmap returnBitmap = Bitmap.createBitmap(origin.getWidth(),origin.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas=new Canvas(returnBitmap);
//2.设置画笔
//        Paint paint=new Paint();
//        paint.setColor(Color.BLACK);
//        canvas.drawColor(Color.WHITE);
//        paint.setAntiAlias(true);  //消除锯齿
//3.画位图

        Matrix matrix=new Matrix();
        matrix.postTranslate(x, y);
        canvas.drawBitmap(origin,matrix, null);

        return returnBitmap;

平移下面这样写无法平移没有效果的 ,目前没搞懂原因，可能是要进行所谓的其他缩放等操作，百思不得其解，

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public static Bitmap rotateBitmap(Bitmap origin, float x,float y) {
    if (origin == null) {
        return null;
    }
    int width = origin.getWidth();
    int height = origin.getHeight();
    Matrix matrix = new Matrix();
    matrix.postTranslate(x,y);
    // 围绕原地进行旋转
    Bitmap newBM = Bitmap.createBitmap(origin, 0, 0, width, height, matrix, false);
    if (newBM.equals(origin)) {
        return newBM;
    }
    origin.recycle();
    return newBM;
}

之前可能是即时运行问题现在又可以了

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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();
        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;
}