My Flutter app will be used to capture image then save to device. I want to remove all images in my device at a preset time. Is there a way to do that?
I think it not because if an app can delete all the images in device so it will not safe to use that app but I still hope it have because it needs for my app.
Things are changing with the recent releases of Android. Access to file system is not going to be same. but you are going to save the captured image in a folder where you have write access, there you can delete all the pictures without a problem
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I want to add a functionality to my app to treat a user's uploaded images online as if they were files on their phone, so all their existing apps can find their images without needing to download them all. Basically tricking the phone into thinking its local instead of online. Any thoughts and how to go about this?
I'm developing an air image viewing application for Windows and Android that will allow some special users to import bitmaps to it. The user can click on a button, browse to a bitmap stored locally and then the app saves the image to the documentsDirectory.
Later on, other users (let's call then common users) will get this already compiled app and view the images imported by the special users.
My question is how can I make the app save the images within it without recompiling it?
Any ideas are welcome! Thank you all!
The only option I can think of, is to make a web server to store and load the images by those users. That's because the images will be stored in the documents or cache directory of the device which means that there is no automatic way to bring them to other devices.
You need a web server that the images will be uploaded and saved, and later on retrieved by other clients. It's called centralized assets system.
I need to store the list of downloaded image in device.I need to know what is the best way for storing images.If i store it in sd card when the user removes the sd card from device.In that situation how to overcome this problem.
If you are bothering about the sdCard removal then only on option is available to save on phone memory that is always available.
Or if you have Internet available what about moving to cloud ???
but if the main concern is security of Images you can go with the answer of user #shree202
For the security purpose you can change the extension
Say From JPG ==>> .db
it is use less for other applications and also user manually can't change the extension
and also for more secure way You can encrypt it by changing it to byte.
If you are going to open the images right from your own application, then, you can remove the extension of the image file and then save. After that, while accessing the image you can get the file list and display it again in your application by appending the file extension.
I'm wanting to include some wallpapers and custom icons with my next application update. What's the best way to go about that in Android? I've been doing some searching but I haven't seen anything satisfactory.
Thanks.
Just change the icon and the background and update the app. Or do you mean something else?
I know if your app moves/copies the files to the user's SD card then the media scanner should pick it up and include in the Gallery app. Which can then be used as a wallpaper. But as for using them directly from your app, I'm not sure.
Might be good to not include them in the app directly, but allow the user to choose to download them from within your app (if you have a server or external site you can host them on). That would keep the size of your app small, and allow you to download them directly to the user's SD card.
I want to do this. my app has many screens and in each of them, on the top, I display an imageView as a logo. So I have 20 screens and that means (20*3) images in my drawable which makes my app be many Mb's. Because this image is static and never changes I want to do this: Getting it from the web (I know how to do it, I am not asking this) only for the first time this screen is ever launched, then this image be stored somewhere in user's device and then use that path as a source. (I mean not download it again, because it will be annoying for the user waiting every time). So is it possible? Will it make my app go slower (not the first time, but the rest) because I am retrieving data from SD?
Yes, you can do this fairly easily. You also do not have to store the data on the SD card necessarily. You can store the image in the internal storage.
Basically, set up a cache directory. When you need the image, check the cache directory, and if the file is not there, download it over http and store the file in the cache directory.
It will change how you get the resource (e.g., you won't be able to use R.drawable.imagename), but you can just load the drawable programmatically.