everyone here.
I have a question about the extended_image package.
Extended_image was installed for cache. I found that the default value for cache is true. If I use ExtendedImage.network, does it automatically cache?
And is there a way to use the cache image or to confirm that the cache image is used?
Please give us a lot of guidance.
How to cache network image when using extended_image package
How to use cache image
How to check that the current load image is a cache image
By default ExtendedImage.network automatically stores loaded images to cache using the image URL as the key, you can set the cache parameter to false if you want to disable this behavior.
Also if you want to set your own cache key, you can use the cacheKey property.
Related
I want to control cache data in graphql flutter.
for example, I want to set a time for deleting cache or...
I use graphql_flutter in my project and I know I can use FetchPolicy, but I want to access more in cache data.
https://pub.dev/packages/graphql_flutter
so can anyone help me please? how can I do that?
Is there option to reuse result of initialize method for video_player package? It takes time for complete - it would be great to cache it (eg. memory level) and reuse it when you back to before used video - and simple use cached data instead of wait for initialize result. I need it for intensive switching between videos.
There is a package called cached_video_player which may help resolve your problem. Check it out here.
I think you are asking about having the screen/page/widget pre-render. That is not currently supported by flutter according to this issue filed on github:
https://github.com/flutter/uxr/issues/6#issuecomment-881918751
Sure, but this is not very scalable and will quickly turn into a mess. It's much simpler and more flexible to just give MyRoute someway it can cache the next route, and then show that cached route when it needs. But flutter doesn't support this as everything needs to be 'on-stage' before it can be initialized. In AIR, or Unity, I could simply construct my new page, and it would begin loading data, I could then toss it on stage whenever I want.
PS. You probably already know you can pre-cache the video data/file itself.
I'm developing a Flutter App, and one of the steps I need to take is to implement a way for user to increase/decrease the size of the text. For that, I'm thinking about making a slider in the settings page, which is quite straight-forward, but I don't know how to create a global value, change it (so it can't be a constant) and use it everywhere.
Any help is much is much appreciated !
You can store persistent data using shared_preferences or get_storage.
You can use the Hive framework to store the data locally on the device - https://docs.hivedb.dev/#/
First install Hive as a dependency and import it. Initialize Hive using Hive.initFlutter() (in the hive_flutter package).
Open a box using Hive.openBox("boxName"). Store the box as a variable - var box = Hive.box("boxName").
Add data into the box using box.put("key", "value").
Then you can access the data from anywhere you want by calling Hive.get("key").
I use flutter_inappwebview for fetching the website into the flutter app. I want to save all the resources like JS and CSS file content into the cache from website during webview start and then when I call same website the resources will intercept and inject the cached files into the webview. Is this possible.. If possible then how.. please explain with example. Thank you.
note: caching is already enabled for this plugin by default. but what you're asking is offline-mode which flutter_inappwebview plugin does not support yet.
the cache you're refering to is not the cache that browsers use (mobile or desktop) what you're refering to is basically called offline-mode in the world of browsers.
in regard to the flutter_inappwebview plugin there is already an issue (or two) about this feature you're looking for. and i believe it is not implemented yet.
you should keep an eye on these github issues issue-561 & issue-366
That flutter_inappwebview package has already a property, cacheEnabled with default parameter, true. You don't need to do anything about this. If you don't want to store cache files, then you can set it to false.
///Sets whether WebView should use browser caching. The default value is `true`.
///
///**NOTE**: available on iOS 9.0+.
bool cacheEnabled;
And, the clearCache property with the default value, 'false'.
///Set to `true` to have all the browser's cache cleared before the new WebView is opened. The default value is `false`.
bool clearCache;
I have a Webview that must load an image! When I upload this image I see every time the same image as before, and i must reboot my app to see the new image...
I think is a cache problem..How can I solve that??
One quick and easy method would be to append the current time stamp onto the url whenever you load it.
So instead of loading:
http://www.myhost.com/myimg.jpg
you'd load
http://www.myhost.com/myimg.jpg?12345689
Using a cache breaker like this is a very common method in web development to force reloading of content.
I did do some quick googling and it appears clearing out NSURL's cache won't do the trick. In 10.6 the api reloadFromOrigin: may do the trick, but I'm not aware if this has made it's way onto the iphone yet.
Edit:
I found this page in the docs. It looks like you can use the preferences system to say whether or not to use caching. Not tested, but that'd be something to look at.