How to pick image from particular folder, say sdcard/mypics?
i can recommend the gridview tutorial.
you will have to modify the code a bit to get the resource into an array before showing the gridview. but therefore you can use the BitmapFactory class.
Related
I am trying to add an image slide on my android app.
When I try to add the source for the image, from drawable folder, I can't select the iamges.
Here, a little screenshot to understand better the problem:
Screen
What can I do to solve it?
Thank you for your answer.
the naming convention shouldn't be a number. declare it in small letters, like this -> image_one ......e.tc.
You should use PNG or WEBP images as your drawables.
As you may already know variable names should not start with a number. So in your case using a number as your image name forces the compiler to generate a variable named as your drawable name which cannot be accepted in programming, hence the constant R.drawable.1 does not get generated. Try renaming your drawable to an alphabetical equivalent.
I am working on an a simple android application that stores objects in an array, and displays them to the user via a listview. Each object contains a photo and a single text field. For demonstration purposes, I would like to pre-populate this array with some hardcoded objects.
The trouble is that the images are typically acquired through the camera interface, and each object only stores the path to that image. I can add the hardcoded images as drawables, but then they don't have a file path. I could when the app is initialized, convert the drawables to bitmaps and save the bitmaps to the SD card, but that seems too complicated to be the correct answer...
Any ideas on the best way to get these images into file storage so that I refer to them via their URIs?
Thanks!
When you create your views in your adapter, have a ImageView in your layout and use a loader or custom AsyncTask to load the image in the background and have it update the ImageView instance once it has the data.
check the background from this on loading images from the network.
You acquire images from the camera but notice that when you do a resource chooser where mimetype = img/*, the selector just merges local camera(gallery) storage with other photo, content providers. An example of common chooser for photos is in 'Evernote' where you go to the composer view with the 2X2 grid and touch the 'attachment' icon... thats a photo chooser...
In other words , it helps to understand the general practice for managing photos and for presenting them in imageViews.
Typically, there is a lazyLoader that has an interface with args for the imgView and the URI of the image source. Under the covers on a call to 'loadImage(view, uri), the implementation checks the following:
is the bitmap already in a memCache?
the local file , that backs the bitmap, does it exist in the folder reserved for this purpose?
if none of above, go get the array of bytes for the img from across the network ( or in your case , get bytes from camera ).
Even though your question is a little different , IMO , the standard practices for images may apply and you may want to adapt one of the many libs for image presentation to your specific requirements.
I need a tutorial where in I can get images from a folder to display in grid view and then on click of the image in grid I can see full view and swipe functionality
any tutorial or code here please
thanks in advance
I think this is not hard to perform.
Find out your SD card folder path, scan and store image files and get image path in the SD card folder, get the bitmap from stored image path and put in to gridview. set gridview item selected listener to display image when click on a item.
There will not have a example code contains all the function you need. you can divide the problem to small ones, then try to solve it piece by piece. For example: solve scan image file from a folder first.
If the code given in gitHub can not fetch your images then paste the
path here which is used to fetch the images.
To set images in grid view, you already got the code. But now you
want to slide the images one by one. Then I can give you a hint that
use gallery view of android. It provides slider of small images. You
need to change the resolution of images. You need to combine these 2
views.
I need to change the source of an ImageView dynamically. I have a whole bunch of them with the same names, stored in their different dpi directories (drawable-hdpi etc) under res/. For this I've been using ImageView's setImageResource() and passing it a value from an array of resource IDs I've created at runtime like so:
decorations = new int[]{
R.drawable.bird1,
R.drawable.flower2,
R.drawable.bird3,
..etc};
Anyway, for some reason, the 6th image gets corrupted into an alternative image used for other things, not one in the resources list.
What on earth is going on?
Turns out I had a corrupt/incorrect image or the image was in the wrong directory or something. Still, strange that it decided to just display the next image in the directory rather than just crashing with an Exception or something.
I am using the following code to pick a folder from the SDCard.
Environment.getExternalStorageDirectory();
After selecting the folder, I return the path of the folder and display it in a text view currently.
What I want to do is, I want to display all images in the selected folder in the form of a slide show. How do I go about in doing this?
1. convert images in the Bitmap.
Bitmap bm = BitmapFactory.decodeFile(String pathName);
Decode a file path into a bitmap.BitmapFactory
2. Using ImageView set that Bitmap in ImageView.
ImageView.setImageBitmap(Bitmap bm);
Sets a Bitmap as the content of this ImageView.
3. For slide show just after some delay (use timer) after change the bitmap of ImageView.
We are appreciate If you are do by yourself. Without finding any code.
EDIT: Here Mihai Fonoage's Blog Displaying Images from SD Card In Android - Part 2 It display images from sdcard in Gridview. You can modified it and display Images one-by-one as a slideshow.
If all you want to do is cycle through the images one by one, there are numerous options. You could for example simply use a Timer (or preferably a ScheduledThreadPoolExecutor if you're writing production code) with a fixed interval or have a Handler repeatedly post itself with a certain delay. With each 'tick' you can then simply set the next image.
If you're after something a little more fancy, it may be worth looking at implementing an ImageSwitcher, which provides the ability to also show thumbs of upcoming/previous images. Code examples are wide spread, e.g. here (scroll down a bit).