In my application I want a image gallery that will show the images that were taken from the Android camera. So, I am trying to copy files from the Android storage to the assets folder to make a image gallery.
For that I have write the following code.
string sourceDriectory="";
string targetDriectory="";
void Start()
{
CopySomething( sourceDriectory, targetDriectory);
}
static void CopySomething(string sourceDriectory, string targetDriectory)
{
UnityEditor.FileUtil.CopyFileOrDirectory(sourceDriectory, targetDriectory);
}
In this code I am not getting how can I will set the sourceDriectory path and the targetDriectory path.
You don't need to copy images only to show them in your app. You can just directly access the image files and display in your app.
Take a look at here for how you can access images from gallery.
Related
I want to plot multiple assets with buildGriedView. I already have some assets to plot. But I want to add to this asset list some images I'm getting from using imagePicker. I'd like to ask if it is possible to make these images (from imagePicker) assets so I can also add them to the list and plot with buildGridView.
Here's what is said on assets in the Flutter documentation:
Flutter apps can include both code and assets (sometimes called
resources). An asset is a file that is bundled and deployed with your
app, and is accessible at runtime. [...]
So no, you won't be able to add any assets once your application is compiled. If you want to use images from an image picker you will need to use workaround such as reading the file's bytes (you could use the widget Image.memory). The package image_picker (which I suppose is the one you are using) provide a method readAsBytes() for the retrieved file.
final myImage = await pickImage(source: ImageSource.gallery);
if (myImage != null) {
final myImageBytes = await myImage.readAsBytes();
return Image.memory(myImageBytes);
}
Documentation
Image.memory
image_picker readAsBytes
My application downloads a set of images and stores them in the internal storage by creating a folder.
The problem is the images are being shown in the gallery. This should not happen, is there a way to programatically hide the images but still be usable by the app?
Thanks in advance.
EDIT:
This is only happening to the android version of the app. In the iOS it is not showing in the Camera Roll.
This depends where you download the images: If you download them on your Pictures folder or inside of a public folder from sdcard/internal memory then MediaScanner scan them so your pictures will be visible in the Gallery app.
To avoid this you can try one of the following solutions:
Add a .nomedia file inside your destination folder
OR
Download your pictures in app cache directory by using LocalFileSystem.TEMPORARY.
Something like
window.requestFileSystem(LocalFileSystem.TEMPORARY, 0, function(fs) {
fs.root.getDirectory("media", {create: true}, function(fileDirectoryEntry) {
// var destFile = fileDirectory + "/" + filename;
// downloadPicture(srcUrl, destFile);
});
});
The downside of this solution is that when the app is removed, your pictures are deleted as well.
One part of my current project is downloading images from URL then saving to SDCard. But the problem is all of saved images in sdcard is displayed in android gallery page. What I want is "I don't want all of my saved images in android gallery."
Add ".nomedia" file. Did not work? Try the second option.
Save your files to a folder that starts with ".", e.g., /sdcard/.myimages/
You can create .nomedia file using this code:
String NOMEDIA=".nomedia";
File Folder = new File(Environment.getExternalStorageDirectory() + "/mydir");
if(Folder.mkdir()) {
nomediaFile = new File(Environment.getExternalStorageDirectory() + "/mydir/"+ NOMEDIA);
if(!nomediaFile.exists()){
nomediaFile.createNewFile();
}
}
I found a simple way(I think so).
Create a folder in 'Android' folder(where data & obb folders are present) and put your media(pics,videos, etc.,) in the folder you've created.
Gallery app ignores that 'Android' folder. Simple :-)
its so late and i know other answers are complete but i think putting .nomedia file makes all pictures in that particular folder hidden :
just change extension of image file programmatically and this way gallery cant detect it as an image . eg if your image is "pic1.jpg" rename it to "pic1.aaa";
and when you want show it again rename it again
I have an application which has loads of pictures. The total picture is saved in an SD card due to large number of picture. The main problem is that the pictures are available in gallery. I want a way to hide the picture from the gallery but must be available for my application.
I did put " . " in front of the file name to make it hidden
but the images were not displayed in may application also!
Anyone.. help.. please
thanks..
Gallery handles all media files it knows about, so if you want it to stay away of your assets you got two solutions. First, add .nomedia file to the folder with your images, and Gallery should skip it (most image viewers would honor .nomedia, yet there's no guarantee). Other solution is to use some own, proprietary file format, so Gallery or other tools won't be able to process it. I'd recomment .nomedia if that's sufficient solution.
Add .nomedia file into the image folder. The important thing is that, the folder should be empty, when you add .nomedia file. If the folder contains some images before adding '.nomedia' file, the gallery will not hide those images, and it will hide the images added after '.nomedia' file. So The first file added to the image folder should be '.nomedia'.
Hope dis will help you
Thankx,
This line of code can add the .nomedia file in your directory and makes your images hidden from the gallery
String NOMEDIA=" .nomedia";
File Folder = new File(Environment.getExternalStorageDirectory() + "/mydir");
if(Folder.mkdir()) {
nomediaFile = new File(Environment.getExternalStorageDirectory() + "/mydir/"+ NOMEDIA);
if(!nomediaFile.exists()){
nomediaFile.createNewFile();
}
}
i think the place where you save the images matter, try to save them into application cache directory, or files directory.
you can get access to cache directory using : getCacheDir() in your activity.
and your files directory: getFilesDir()
these two directories must not be visible or accessible to any other applications expect your application,
I used assets to accomplish this in my app.
I need to get Absolute path to Folder in Assets.
Some like this for sd-card:
final String sdDir = Environment.getExternalStorageDirectory() + "Files";
What i do incorrect?
First I try to get path (in green ractangle) this way but I alwase get "False".
Then I comment this block and try to get path from getAssets().list();
But I get 3 folders witch I see first time.
I want to make massive like this "green" but I need to use files from assets:
Look the image
Help me to get absolute path to my Files folder.
I'm not exactly sure what you're trying to do, so I'll try to cover the bases, and maybe this will help.
If you are just trying to get a list of what's in your assets, then
use getAssets().list("Files"). (You have to use the subdirectory,
because of this).
If you are trying to get an absolute path to your assets directory
(or any subdirectory), you can't. Whatever is in the assets directory
is in the APK. It's not in external storage like on an SD card.
If you are trying to open up files in the assets directory, use
AssetManager.open(filename) to get the InputStream. Here,
filename should be the relative path from the assets directory.
EDIT
I'm not sure what you mean by "massive", but if you want to load the file black.png from assets instead of the SD card, then write this:
// must be called from Activity method, such as onCreate()
AssetManager assetMgr = this.getAssets();
mColors = new Bitmap[] {
BitmapFactory.decodeStream(assetMgr.open("black.png"));
// and the rest
};
Assets are stored in the APK file so there are no absolute path than your application can use. But, I would suggest to take a look at file:///android_asset. It might fits your needs. Here is a good example on how to display an Asset in a WebView.