i have an app with a gallery of images and i want that the user can save it into his own gallery. I've created an option menu with a single voice "save" to allow that but the problem is...how can i save the image into the gallery?
this is my code:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.menuFinale:
imgView.setDrawingCacheEnabled(true);
Bitmap bitmap = imgView.getDrawingCache();
File root = Environment.getExternalStorageDirectory();
File file = new File(root.getAbsolutePath()+"/DCIM/Camera/img.jpg");
try
{
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(CompressFormat.JPEG, 100, ostream);
ostream.close();
}
catch (Exception e)
{
e.printStackTrace();
}
return true;
default:
return super.onOptionsItemSelected(item);
}
}
i'm not sure of this part of code:
File root = Environment.getExternalStorageDirectory();
File file = new File(root.getAbsolutePath()+"/DCIM/Camera/img.jpg");
is it correct to save into the gallery? unfortunately the code doesn't work :(
This question is related to
android
imageview
gallery
save-image
I come here with the same doubt but for Xamarin for Android, I have used the Sigrist answer to do this method after save my file:
private void UpdateGallery()
{
Intent mediaScanIntent = new Intent(Intent.ActionMediaScannerScanFile);
Java.IO.File file = new Java.IO.File(_path);
Android.Net.Uri contentUri = Android.Net.Uri.FromFile(file);
mediaScanIntent.SetData(contentUri);
Application.Context.SendBroadcast(mediaScanIntent);
}
and it solved my problem, Thx Sigrist. I put it here becouse i did not found an answare about this for Xamarin and i hope it can help other people.
In my case the solutions above did not work I had to do the following:
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(f)));
Actually, you can save you picture at any place. If you want to save in a public space, so any other application can access, use this code:
storageDir = new File(
Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES
),
getAlbumName()
);
The picture doesn't go to the album. To do this, you need to call a scan:
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
You can found more info at https://developer.android.com/training/camera/photobasics.html#TaskGallery
String filePath="/storage/emulated/0/DCIM"+app_name;
File dir=new File(filePath);
if(!dir.exists()){
dir.mkdir();
}
This code is in onCreate method.This code is for creating a directory of app_name. Now,this directory can be accessed using default file manager app in android. Use this string filePath wherever required to set your destination folder. I am sure this method works on Android 7 too because I tested on it.Hence,it can work on other versions of android too.
According to this course, the correct way to do this is:
Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES
)
This will give you the root path for the gallery directory.
You can create a directory inside the camera folder and save the image. After that, you can simply perform your scan. It will instantly show your image in the gallery.
String root = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).toString()+ "/Camera/Your_Directory_Name";
File myDir = new File(root);
myDir.mkdirs();
String fname = "Image-" + image_name + ".png";
File file = new File(myDir, fname);
System.out.println(file.getAbsolutePath());
if (file.exists()) file.delete();
Log.i("LOAD", root + fname);
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.PNG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
MediaScannerConnection.scanFile(context, new String[]{file.getPath()}, new String[]{"image/jpeg"}, null);
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
I've tried a lot of things to let this work on Marshmallow and Lollipop. Finally i ended up moving the saved picture to the DCIM folder (new Google Photo app scan images only if they are inside this folder apparently)
public static File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(System.currentTimeInMillis());
File storageDir = new File(Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/");
if (!storageDir.exists())
storageDir.mkdirs();
File image = File.createTempFile(
timeStamp, /* prefix */
".jpeg", /* suffix */
storageDir /* directory */
);
return image;
}
And then the standard code for scanning files which you can find in the Google Developers site too.
public static void addPicToGallery(Context context, String photoPath) {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(photoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
context.sendBroadcast(mediaScanIntent);
}
Please remember that this folder could not be present in every device in the world and that starting from Marshmallow (API 23), you need to request the permission to WRITE_EXTERNAL_STORAGE to the user.
Source: Stackoverflow.com