I am making an app in which i want to show list of images in my application in the manner , as the images are shown in gallery.The images will get load dynamically. Any help regarding this will be appreciated.
You can use Android's MediaStore.images class to list all the images in the device
http://developer.android.com/reference/android/provider/MediaStore.Images.Media.html
You can get the solution from this tutorial
http://vikaskanani.wordpress.com/2011/07/20/android-custom-image-gallery-with-checkbox-in-grid-to-select-multiple/
A nice and easy tutorial here : http://www.anddev.org/a_androidwidgetgallery_-_example-t332.html
if you want to load your images dynamically, create a function in the BaseAdapter and call it into the constructor to load them at the start of the view for example...
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I have custom adapter (one image, 2 text fields), and I need to check image inside viewHolder. When image is already exist, show that image in ImageView and when image isn't exist, I need to check connection, if all good, show progressbar, download image, and show it, and if all bad then show default image. Sorry for my English.
No you should not implement a Async Task inside ViewHolder bcoz you do not know how much time it will take to load images and the user will be pissed at waiting for the listview to come up.
There are lot of tutorials out there you should use lazy loading for images if you are using URLS for images if there are not much images then you can store it in database or in a file and show any time in the listview
Hope it Helps :)
I've seen many people using, it is normal for small operations.
but it can't be used for tasks which take time - as the user experience is affected by lagging.
for small operations you can use it.
I have created five Horizontal ListView with images and texts in one activity. Using Lazy loading of images concept it is working fine. Now when it is offline, the list is showing blank,ie., no data . I need to implement memory-caching concept, such that when it is offline it will be showing the previous session datas(images & texts).
In oncreate: I am calling the Asynctask. In doinbackground method of asynctask,I am consuming Webservices containing images & texts,then I am passing those datas to the adapter. And in postexecute, I am setting my adapter to Listview.
In adapter class: getview method I am setting the texts and loading the images using lazy loading.
Please help me to get rid of this. Thanks in advance
You should store text etc. in an SQLiteDatabase and store your Images on external storage.
Can any one tell me how to show image from the url in list-view in android using Simple adapter.
Suggestions please
Thanks for your precious time!..
Hey it is too easy to implement using Universal Image Loader. This is the library for the Displaying the image in ListView, Gridview and any other one in which you are adapting the views.
You can also use lazy loading of images.Here is the code.
I want to display multiple Gallery in my Application. The number of gallery depends on the input which i get while running. Im confused to create it dynamically.
Please help me. Following are the idea's which im planning to do.
Creating Gallery array using the input.length.
Assigning same Image Adapter class for all galleries.
Here are my questions
Will it work if i apply same Image Adapter for all Galeries?
If so i have Different array to store the images, how i will assign Image Adapter to take which array?
Is there any other simple way to implement it?
Thanks in advance
What is the best practice for loading images from the Web into a ListView?
Do I have to load them first into SQLite database or should I load them directly into a ListView?
And also after clicking an item in the ListView I have to show the same image in another activity. Is it the right way to pass this image to another activity or it is better to load it from Web / SQLite once again?
Look here Lazy loading of images
Loading them directly into the listview will make scrolling in it slow, as it will reload them everytime they get visible.
do that Google recommended http://developer.android.com/training/displaying-bitmaps/index.html