android–OutOfMemoryException：从服务器加载一堆图像

概述我正在开发一个从ServerAPI下载图像的应用程序…我们创建了一个API,它提供了图像URL的JSON响应…我创建了用于显示图像的GridView,它正在成功运行….但问题是,当图像数量增加时,由于堆内存增加,它会抛出OutOfMemoryException…我试图通过System.gc();..手动清除堆内存但是没

我正在开发一个从Server API下载图像的应用程序…
我们创建了一个API,它提供了图像URL的JSON响应…

我创建了用于显示图像的GrIDVIEw,它正在成功运行….

但问题是,当图像数量增加时,由于堆内存增加,它会抛出OutOfMemoryException …

我试图通过System.gc(); ..手动清除堆内存但是没有效果…….

所以,我的问题是：如何成功地从服务器加载所有图像,而没有这个问题..
我应该做些什么改变才能解决这个问题

有我的JsON和代码..

JsON：

{is_error: "false",is_error_msg: "VIDeo/Image List",images: [     "http://equestsolutions.net/clIEnts/elad/MovIEApp/public/uploads/Screenshot_2014-07-21-17-22-43.png",     "http://equestsolutions.net/clIEnts/elad/MovIEApp/public/uploads/img_20140521_155703.jpg",     "http://equestsolutions.net/clIEnts/elad/MovIEApp/public/uploads/img_20140522_152254.jpg",     "http://equestsolutions.net/clIEnts/elad/MovIEApp/public/uploads/1386231199182.jpg",     "http://equestsolutions.net/clIEnts/elad/MovIEApp/public/uploads/DSC01809.JPG"],vIDeos: [ ],others: [ ]}

ImageAdapter.java

private class ImageAdapter extends BaseAdapter {    private final Context mContext;    ArrayList<String> urls_List;    Progressbar pbrLoadImage;    public ImageAdapter(Context context,ArrayList<String> urls_List) {        super();        mContext = context;        this.urls_List= urls_List;    }    @OverrIDe    public int getCount() {        return urls_List.size();    }    @OverrIDe    public Object getItem(int position) {        return urls_List.get(position);    }    @OverrIDe    public long getItemID(int position) {        return position;    }    @OverrIDe    public VIEw getVIEw(int position, VIEw convertVIEw, VIEwGroup container) {        ImageVIEw imageVIEw;        if (convertVIEw == null) { // if it's not recycled, initialize some attributes            LayoutInflater mInflater = (LayoutInflater)                    getActivity().getSystemService(Activity.LAYOUT_INFLATER_SERVICE);            convertVIEw = mInflater.inflate(R.layout.image_grID_fragment_raw, null);        }        FrameLayout frm = (FrameLayout)convertVIEw.findVIEwByID(R.ID.imageframe);        pbrLoadImage =(Progressbar)convertVIEw.findVIEwByID(R.ID.pbrLoadImage);        imageVIEw = (ImageVIEw)convertVIEw.findVIEwByID(R.ID.imageFromUrl); ImageVIEw(mContext);        imageVIEw.setScaleType(ImageVIEw.ScaleType.CENTER_CROP);        imageVIEw.getLayoutParams().height = 160;        imageVIEw.getLayoutParams().wIDth = 160;        Log.i("values", "value :"+url_List.get(position));        new BitmapWorkerTask(imageVIEw).execute(url_List.get(position)); // calling class for download Images...        return convertVIEw;    }    //download Images from path    class BitmapWorkerTask extends AsyncTask<String, VoID, Bitmap> {        private final WeakReference<ImageVIEw> imageVIEwReference;        //private int data = 0;        String path=null;        Bitmap mIcon=null;        public BitmapWorkerTask(ImageVIEw imageVIEw) {            // Use a WeakReference to ensure the ImageVIEw can be garbage collected            imageVIEwReference = new WeakReference<ImageVIEw>(imageVIEw);        }        // Decode image in background.        @OverrIDe        protected Bitmap doInBackground(String... params) {            //data = params[0];            path = params[0];            inputStream in=null;            ByteArrayOutputStream out=null;            try {                in = new java.net.URL(path).openStream();                mIcon = BitmapFactory.decodeStream(in);                out= new ByteArrayOutputStream();                mIcon.compress(Bitmap.CompressFormat.PNG, 100, out);                in.close();                out.close();            } catch (MalformedURLException e) {                e.printstacktrace();            } catch (IOException e) {                e.printstacktrace();            }            //return decodeSampledBitmapFromresource(getResources(), data, 100, 100));            //return BitmapFactory.decodeStream(new ByteArrayinputStream(out.toByteArray()));            return mIcon;        }        // Once complete, see if ImageVIEw is still around and set bitmap.        @OverrIDe        protected voID onPostExecute(Bitmap bitmap) {            if (imageVIEwReference != null && bitmap != null) {                final ImageVIEw imageVIEw = imageVIEwReference.get();                if (imageVIEw != null) {                    imageVIEw.setimageBitmap(bitmap);                }            }        }    }}

请告诉我我应该做些什么改变来解决我的问题..

感谢您的帮助…

解决方法:

这是androID中一个非常常见的问题.将位图加载到内存中可能会导致OutOfMemoryException.

我建议你使用像picasso这样的lib,这个lib在后台为你加载图像并调整它们以适应你的ImageVIEw一行代码.

Picasso.with(context).load(URL).fit().centerCrop().into(imageVIEw);

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