What are the dangers of setting outWidth and outHeight instead of inSampleSize for decoding bitmap
outWidth
and outHeight
are output values. They are not input values. Setting them yourself will do nothing useful.
Question
To resize a bitmap in android, I am thinking of doing
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 1;
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filepath, options);
// options.inSampleSize = ImageResizer.calculateInSampleSize(options, x, y);
options.outWidth = x;
options.outHeight = y;
options.inJustDecodeBounds = false;
Bitmap bmp = BitmapFactory.decodeFile(filepath, options);
Please, notice which line is commented out. How would my approach differ (compare and contrast) with the more usual
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 1;
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filepath, options);
options.inSampleSize = ImageResizer.calculateInSampleSize(options, x, y);
// options.outWidth = x;
// options.outHeight = y;
options.inJustDecodeBounds = false;
Bitmap bmp = BitmapFactory.decodeFile(filepath, options);
How about if I keep all of them? As in
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 1;
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filepath, options);
options.inSampleSize = ImageResizer.calculateInSampleSize(options, x, y);
options.outWidth = x;
options.outHeight = y;
options.inJustDecodeBounds = false;
Bitmap bmp = BitmapFactory.decodeFile(filepath, options);
Solution
What are the dangers of setting outWidth and outHeight instead of inSampleSize for decoding bitmap
outWidth
and outHeight
are output values. They are not input values. Setting them yourself will do nothing useful.