universal-image-loader | 易学教程

How to execute other threads from doinbackground()

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问题 I want to download multiple images using ImageLoader.loadImage which will launch multiple threads. Because they take a while to execute and i don't want to lock up the UI, i want to run them in the doInBackground() function of AsyncTask. However I cannot launch new threads in the doInBackground() function. Is there a way around this? 回答1: I agree with the comment made by 323go AsyncTask is designed to be a helper class around Thread and Handler and does not constitute a generic threading

get drawable exactly the size of the imageView to use as a placeholder

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问题 I am using Universal Image View to load images into my application. This is the method I implemented public static void setBitmapToAImageviewUIL(final ImageView imageView, String uriPath, String imageName) { if(imageName != null && !imageName.equals("")) { //We use the local image as a temporary placeholder DisplayImageOptions options = new DisplayImageOptions.Builder() .showStubImage(Utilities.getDrawableResource(imageName)) .cacheOnDisc() .cacheInMemory() .imageScaleType(ImageScaleType

Set Image Wallaper of ViewPager in Universal Image Loader UIL

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I am Using Nostra Universal Image Loader plugin, I would like to be able to see the currently image on the ViewPager as the Phone Wallpaper. My code below can set the wallpaper, but its not he currently image thats is displaying on the ViewPager, it will be a image before or a image after, and sometimes a ramdom image of the Sting Array. public class ImagePagerFragment extends Fragment { public static final String TAG = ImagePagerFragment.class.getSimpleName(); VarController vc; public static final int INDEX = 2; public String[] imageUrls; DisplayImageOptions options; ImageView imageView;

Universal ImageLoader java.io.EOFException

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问题 I'm trying to fetch JSON data and display it in my ListView using ArrayAdapter. Anyways, in my adapter, I'm using Universal Image Loader from https://github.com/nostra13/Android-Universal-Image-Loader and the other data were loaded correctly except for the images. Some images were displayed correctly, some should not be on a specific item, and some were not loaded completely. This is my calling fragment: public class SampleFragment extends Fragment implements OnItemClickListener { private

Pinterest Style in Displaying Images with UIL

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问题 Pinterest Style of Displaying Images is exceptional, and this adds beauty to your app. After a couple of research I found out that there are great libraries out there that can display images like Pinterest do but not sure if this is compatible with UIL. I am using the Universal-Image-Loader in displaying my images. In the image shown below I got my images displayed in that manner with some views together with it. It is undeniably true that UIL library handles phone memory greatly in

Android PagerAdapter :: Get Current Item into bitmap

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问题 I am using UniversalImageLoader for my application. My ImageAdapte r extends PagerAdapter . I need currentImage as Bitmap. By callback methood public void onLoadingComplete(Bitmap loadedImage) i am getting bitmap. But that is not that bitmap image currently showing. Either it is the next image or previous image (depending upon swaping). Here is the full code: private class ImagePagerAdapter extends PagerAdapter { private String[] images; private LayoutInflater inflater; ImagePagerAdapter

Cancelling the Image Request Android on the basis of progress - Image loader Volley , Picasso

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问题 There are many popular Image loader available in Github for image loading and caching and Managing Image Request. Universal Image Loader Volley Picasso Fresco (added enhancement ) I came across the requirement if the Imageview if no longer attached to window the request (batch and flight ) will be cancelled . However the scrolling widget like Listview and Gridview the Imageview is frequently attached and detached from window and so the request in queue are canceled respectively . My concern

Android PagerAdapter :: Get Current Item into bitmap

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I am using UniversalImageLoader for my application. My ImageAdapte r extends PagerAdapter . I need currentImage as Bitmap. By callback methood public void onLoadingComplete(Bitmap loadedImage) i am getting bitmap. But that is not that bitmap image currently showing. Either it is the next image or previous image (depending upon swaping). Here is the full code: private class ImagePagerAdapter extends PagerAdapter { private String[] images; private LayoutInflater inflater; ImagePagerAdapter(String[] images) { this.images = images; inflater = getLayoutInflater(); } @Override public void

Image isn't displayed in ImageViewZoom

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问题 I'd like to use ImageViewZoom with Universal Image Loader in ImagePagerActivity. So, what I did: I added imageviewtouch.jar to project classpath. In ImagePagerActivity I changed one line in instantiateItem() function. I commented line where is ImageView and replaced it to ImageViewTouch (4. and 5. line) @Override public Object instantiateItem(View view, int position) { final View imageLayout = inflater.inflate(R.layout.item_pager_image, null); //final ImageView imageView = (ImageView)

UIL loading exact image

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I have another issue with Universal Image loader. Trying to use it in a listview and gridview for displaying large amount of images. The urls passed to UIL contain high res images. I have tried using almost all scaletypes, and it still loads images much slower on mobile network than Original LazyList. As I understand it first loads the exact image and then resizes it. Is there a way to download smaller amount of data to display this very much scaled image. Also it sometimes craches while loading images with two different exceptions. EOFException, and SocketTimeoutException. Any ideas what I am