android - 使用位图工厂后图像的宽度和高度是否增加？

Question

我有一张图片，图片宽度为 290，高度为 330。当我使用位图工厂转换为位图时，宽度和高度在增加。我的代码是，

          mILearnBitmap = BitmapFactory.decodeResource(getResources(),
            R.drawable.capital_a_1);
         mILearnBitmap = mILearnBitmap.copy(Bitmap.Config.ARGB_8888, true);
         mILearnPixelsArry = new int[mILearnBitmap.getWidth() * mILearnBitmap.getHeight()];
         mILearnBitmap.getPixels(mILearnPixelsArry, 0, mILearnBitmap.getWidth(), 0, 0,mILearnBitmap.getWidth(), mILearnBitmap.getHeight());
         Log.d("mILearnPixelsArry", "---" + mILearnPixelsArry.length);
     Log.d("Width", "---" + mILearnBitmap.getWidth());
     Log.d("Height", "---" + mILearnBitmap.getHeight());

使用此代码后，宽度增加到 435，高度增加到 495。请告诉我哪里有错误，请帮助我。

Answer 1

请使用此功能调整图片大小

     public Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {

    int width = bm.getWidth();

    int height = bm.getHeight();

    float scaleWidth = ((float) newWidth) / width;

    float scaleHeight = ((float) newHeight) / height;

    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the bit map

    matrix.postScale(scaleWidth, scaleHeight);
    // matrix.postRotate(90);
    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height,
            matrix, false);

    return resizedBitmap;

}