/**
* Create a new instance of Icon representing a custom icon.
*
* @param ctx Context.
* @param rawIconUri URI of the image to use as icon.
* @return New instance of {@link CustomIcon}, or {@code null} if an error occurred.
*/
public static Icon newIcon(Context ctx, Uri rawIconUri) {
return CustomIcon.createIcon(ctx, rawIconUri);
}
/**
* Create an instance of {@link CustomIcon} given the URI of an image.
*
* @param ctx Context.
* @param rawIconUri URI of the image to use as icon.
* @return New instance of {@link CustomIcon}, or {@code null} if an error occurred.
*/
protected static CustomIcon createIcon(Context ctx, Uri rawIconUri) {
CustomIcon retVal = null;
// Import image locally
File tmpIconFile = CustomIcon.getTempFile(ctx);
InputStream fis;
OutputStream fos;
int byteCount;
byte[] buffer = new byte[2048];
boolean imported = false;
try {
fis = ctx.getContentResolver().openInputStream(rawIconUri);
try {
fos = new FileOutputStream(tmpIconFile);
try {
while ((byteCount = fis.read(buffer)) > 0) {
fos.write(buffer, 0, byteCount);
}
imported = true;
} finally {
fos.close();
}
} finally {
fis.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (!imported) {
return null;
}
// Load scaled image
Bitmap image = Helper.getIconFromImage(tmpIconFile.getAbsolutePath(), ICON_SIZE, ICON_SIZE);
if (image == null) {
return null;
}
// Save resized image and compute Md5
MessageDigest md5;
String hash = null;
try {
// Compress & save icon
fos = new FileOutputStream(tmpIconFile);
try {
image.compress(Bitmap.CompressFormat.PNG, 100, fos);
} finally {
fos.close();
}
// Compute md5
md5 = MessageDigest.getInstance("MD5");
fis = new FileInputStream(tmpIconFile);
try {
while ((byteCount = fis.read(buffer)) > 0) {
md5.update(buffer, 0, byteCount);
}
hash = Helper.bytesToHex(md5.digest());
} finally {
fis.close();
}
} catch (Exception e) {
// Something went wrong.
hash = null;
e.printStackTrace();
}
if (hash != null) {
retVal = new CustomIcon(hash, tmpIconFile.getAbsolutePath());
Log.i(
TAG,
"createIcon: Imported from " + rawIconUri.toString() + " to " + retVal.getIconPath());
} else {
Log.w(TAG, "createIcon: Cannot import from " + rawIconUri.toString());
}
return retVal;
}
