I used https://pub.dev/packages/cached_network_image to cache images it's work with pages but when I re open the app again it reload the image again, I need to store the image on mobile with database and call it again or something like that
if when you enter again it reloads the image it is because something failed with the cache, try with this code use these plugins
cached_network_image: ^3.0.0
flutter_cache_manager: ^3.2.0
static final customCacheManager = CacheManager(Config('customCacheKey',
stalePeriod: Duration(days: 15), maxNrOfCacheObjects: 100));
CachedNetworkImage(
cacheManager: customCacheManager,
height: 40,
width: 40,
fit: BoxFit.cover,
imageUrl: imageUrl,
placeholder: (context, url) => CircularProgressIndicator(
valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
backgroundColor: const Color(0xFF02204c),
),
errorWidget: (context, url, error) => Center(
child: Image.asset(
'assets/images/errorImage.png',
height: 60,
width: 60,
),
),
),
Related
I am not able to show a circular loading indicator or an image while flutter is loading the image from the network.
image: DecorationImage(
image: NetworkImage(
Juegos_de_siempre[index].url_foto,
),
fit: BoxFit.fill,
),
Flutter's documentation suggested the usage of FadeInImage for the placeholder functionality. Here's a link to an example on Flutter's documentation.
You cannot use FadeInImage inside a DecorationImage, so you have to wrap it inside a Stack instead like shown in this thread.
Use CacheNetworkImage Package.Click here.
This is sample code.
CachedNetworkImage(
width: 100,
height: 100,
fit: BoxFit.cover,
imageUrl: imageUrl,
placeholder: (context, url) => const Center(
child: CupertinoActivityIndicator(),
), // replace with your asset image
errorWidget: (context, url, error) =>
const Icon(Icons.error),
),
I am trying to add Hero animation for a Network Image.
The problem is, when I navigate from one screen to another the image loads again on second screen and so I am not able to see the animation.
After loading complete, if I repeat this navigation (from 1st screen to 2nd) this is working fine.
So the question is, How can I achieve this animation when I navigate for first time?
Error-Output:
Click Here
Code:
FirstScreen.dart
Hero(
tag: 'tag',
child: Image.network(
'https://...',
cacheHeight: 1080,
cacheWidth: 1080,
fit: BoxFit.none,
scale: 5,
),
),
secondScreen.dart
Hero(
tag: 'tag',
child: Image.network(
'https://...',
),
)
With CachedNetworkImage:
firstScreen.dart
Hero(
tag: tag
child: CachedNetworkImage(
imageUrl: 'url',
fit: BoxFit.scaleDown,
height: 200,
width: 200,
memCacheHeight: 1080,
memCacheWidth: 1080,
errorWidget: (context, url, error) => Image.asset('assets/..'),
),
)
secondScreen.dart
Hero(
tag: tag,
child: CachedNetworkImage(
imageUrl: 'url',
errorWidget: (context, url, error) => Image.asset('assets/...'),
),
),
create loading builder in the network image widget and use a placeholder instead of image when the image is not fully loaded something like this
Image.network(
imagePath,
// width: 100,
// height: 100,
loadingBuilder: (BuildContext context,
Widget child,
ImageChunkEvent? loadingProgress) {
if (loadingProgress == null) return child;
return Container(
width: 100,
height: 100,
child: Center(
child: // PlaceHolderWidget()
),
);
},
// fit: BoxFit.none,
)
Im trying to make a flutter app for HR and for my employee's section I need to have it so that their initials are shown if a profile picture is unavailable is there a widget which allows me to do this?
Below is an example of what im trying to achieve
You can try it with CachedNetworkImage
CachedNetworkImage(
imageUrl: "http://myimage...",
placeholder: (context, url) => new CircularProgressIndicator(),
errorWidget: (context, url, error) => new Text("my initials here"),
),
You need to Do Something Like This, but first Need to check for Image thats depends on how you are managing data and then
_isImageAvailable ? ProfileImage() : Text(Name)
Container(
height: 100.0,
width: 100.0,
color: Colors.grey,
child: ClipRRect(
borderRadius: BorderRadius.circular(8.0),
child: hasImage
? Image.network(
imageUrl,
fit: BoxFit.contain,
)
: Center(
child: Text('$nameInitial'),
),
),
)
I've just implemented the Flutter package cached_network_image and I wonder how I can preload images so they're available later in an instant. I retrieve all image-urls that will be used later from the our server.
I've defined my custom cache manager getter:
class LocalCacheManager {
static const key = 'customCacheKey';
static CacheManager instance = CacheManager(
Config(
key,
stalePeriod: const Duration(days: 14),
maxNrOfCacheObjects: 200,
repo: JsonCacheInfoRepository(databaseName: key),
fileSystem: LocalCacheFileSystem(key),
fileService: HttpFileService(),
),
);
}
Here's how I currently try to preload the image:
LocalCacheManager.instance.downloadFile(MY_IMAGE_URL)),
And here's how I create the widget:
child: CachedNetworkImage(imageUrl: MY_IMAGE_URL, cacheManager: LocalCacheManager.instance),
But I can clearly see that files are always cached again as soon as I create the CachedNetworkImage.
You can use Flutter Cache Manager like this
DefaultCacheManager().downloadFile(MY_IMAGE_URL).then((_) {});
Later, just use your cached image like this
child: CachedNetworkImage(imageUrl: MY_IMAGE_URL,),
Simplest and workable way is to use precacheImage (flutter build-in function) with CachedNetworkImageProvider:
Image image = Image(
image: CachedNetworkImageProvider(/* url */),
fit: BoxFit.cover,
);
precacheImage(image.image, context);
return Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0),
child: ClipRRect(
borderRadius: BorderRadius.circular(8.0),
child: image,
),
);
cached_network_image: ^2.0.0
CachedNetworkImage(
imageUrl: yoururl,
errorWidget: (context, url, error) => Text("error"),
imageBuilder: (context, imageProvider) => CircleAvatar(
radius: 120,
backgroundImage: imageProvider,
),
placeholder: (context, url) => CircularProgressIndicator(
backgroundColor: primary,
),
),
How can I have a fade in effect in CircleAvatar?
Type of backgroundImage of CircleAvatar is ImageProvider and FadeInImage is not a ImageProvider
Use Clip react,
for image loading i use CachedNetworkImage(cached_network_image: 2.3.3)
ClipRRect(
borderRadius: BorderRadius.circular(25.0),
child: CachedNetworkImage(
fit: BoxFit.cover,
width: 50,
height: 50,
placeholder: (context, url) => Image.asset('loadder.gif'),
imageUrl:
"https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcRLe5PABjXc17cjIMOibECLM7ppDwMmiDg6Dw&usqp=CAU"),
),
this is user loader image or gif(example).
placeholder: (context, url) => Image.asset('loadder.gif'),
this is your main image(example).
imageUrl:"https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcRLe5PABjXc17cjIMOibECLM7ppDwMmiDg6Dw&usqp=CAU"),