public static Bitmap getScaleOptionImageByScaleOfWinWidth(
Context context, File imgFile, float scaleOfWinWidth) {
if (imgFile == null) return null;
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imgFile.getAbsolutePath(), bmOptions);
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
if (photoW == 0) {
return null;
}
int th = (int) (DeviceUtil.getDeviceHeight(context));
int tw = (int) (DeviceUtil.getDeviceWidth(context));
tw = (int) (tw * scaleOfWinWidth);
if (tw == 0) {
return null;
}
th = (int) (tw * ((double) photoH / photoW));
int scaleFactor = Math.min(photoW / tw, photoH / th);
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor;
bmOptions.inPurgeable = true;
Bitmap bitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath(), bmOptions);
return bitmap;
}
public static Bitmap getOptionBitmapByScaleOfWinWidth(
Context context, Uri imgUri, float scaleOfWinWidth) throws FileNotFoundException {
if (imgUri == null) return null;
// Get the dimensions of the bitmap
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
InputStream is = null;
try {
is = context.getContentResolver().openInputStream(imgUri);
BitmapFactory.decodeStream(is, null, bmOptions);
} catch (Exception e) {
} finally {
IOUtils.closeQuietly(is);
}
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
int tw = (int) (DeviceUtil.getDeviceWidth(context) * scaleOfWinWidth);
if (tw == 0) {
return null;
}
int th = (int) (tw * ((double) photoH / photoW));
int targetW = tw;
int targetH = th;
// Determine how much to scale down the image
int scaleFactor = Math.min(photoW / targetW, photoH / targetH);
// Decode the image file into a Bitmap sized to fill the View
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor;
bmOptions.inPurgeable = true;
InputStream nis = null;
Bitmap bitmap = null;
try {
nis = context.getContentResolver().openInputStream(imgUri);
bitmap = BitmapFactory.decodeStream(nis, null, bmOptions);
} catch (Exception e) {
} finally {
IOUtils.closeQuietly(nis);
}
return bitmap;
}