/**
* Read a picture from the given path, return null if unsuffessful <br>
* Make sure to NOT call on main UI thread because it's slow <br>
* Will be properly rotated based on exif data stored in image
*
* @param path
* @return the bitmap
*/
public static Bitmap getThumbnail(String path) {
// open the path if it exists
if (path != null && path.length() != 0 && (new File(path)).exists()) {
// read the bitmap
Bitmap bmp = BitmapFactory.decodeFile(path);
if (bmp == null) return bmp;
// now do the rotation
float angle = com.tools.Tools.getExifOrientationAngle(path);
if (angle != 0) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
bmp = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(), bmp.getHeight(), matrix, true);
}
return bmp;
} else return null;
}
/**
* Return the properly rotated full image, null if can't be found or any other error <br>
* Make sure to only call NOT on main ui thread <br>
* It will be scaled down, so as not to cause memory crash
*
* @param path the path to the file
* @param desiredWidth the desired width of the image, will not necessarily create a bitmap of
* this exact size, but no larger than this
* @param desiredHeight the desired height of the image, will not necessarily create a bitmap of
* this exact size, but no larger than this
* @return The bitmap or null if failed.
*/
public static Bitmap getFullImage(String path, int desiredWidth, int desiredHeight) {
try {
if (path != null && path.length() != 0 && (new File(path)).exists()) {
// make the file
File file = new File(path);
// decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(file), null, o);
// find the correct scale size
double scale =
((double)
Math.max((double) o.outHeight / desiredHeight, (double) o.outWidth / desiredWidth));
int intScale = (int) Math.pow(2, Math.ceil(com.tools.MathTools.log2(scale)));
// now actually do the resizeing
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = intScale;
Bitmap bitmap = BitmapFactory.decodeStream(new FileInputStream(file), null, options);
float angle = com.tools.Tools.getExifOrientationAngle(path);
// now do the rotation
if (angle != 0) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
bitmap =
Bitmap.createBitmap(
bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
return bitmap;
} else return null;
} catch (FileNotFoundException e) {
return null;
} catch (Exception e) {
return null;
}
}
