通用ImageLoader的java.io.EOFException [英] Universal ImageLoader java.io.EOFException
本文介绍了通用ImageLoader的java.io.EOFException的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图获取JSON数据并使用ArrayAdapter在我的ListView中显示。不管怎么说，在我的转接器，我使用的通用图像装载机从 https://github.com / nostra13 / Android的通用 - 图像 - 装载机和其他数据除了图像正确加载。被正确地显示一些图像，有的不应该是在一个特定的项目，还有一些并没有完全加载。
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.
这是我的呼吁片段：
public class SampleFragment extends Fragment implements
OnItemClickListener {
private ListView songsListView;
private ArrayList<String> list;
private ArrayAdapter<String> dataAdapter;
private View rootView;
private Button selectReferenceSong;
private Fragment memberFragment;
private String[] songsArray;
private ArrayAdapter<String> arrayAdapter;
private ArrayList<ReferenceTracks> arrayOfList;
private String bufferString;
private static final String rssFeed = "https://dl.dropboxusercontent.com/u/32769459/reference_tracks.json";
private static final String TAG_MUSIC = "music";
private static final String TAG_SONG = "song";
private static final String TAG_TITLE = "title";
private static final String TAG_ARTIST = "artist";
private static final String TAG_DURATION = "duration";
private static final String TAG_THUMBURL = "thumb_url";
public SampleFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.sample_layout, container, false);
songsListView = (ListView) rootView.findViewById(R.id.songsListView);
songsListView.setOnItemClickListener(this);
arrayOfList = new ArrayList<ReferenceTracks>();
if (Utility.isNetworkAvailable(getActivity())) {
new AsynchronousTask().execute(rssFeed);
} else {
Toast.makeText(getActivity().getApplicationContext(),
"No Network Connection!", Toast.LENGTH_SHORT).show();
}
return rootView;
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
}
/**
*
* @Asynchronous class
*/
public class AsynchronousTask extends AsyncTask<String, Void, String> {
ProgressDialog pDialog;
private RowAdapter objRowAdapter;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Loading...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... params) {
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
return Utility.getJSONString(params[0]);
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (null != pDialog && pDialog.isShowing()) {
pDialog.dismiss();
}
if (null == result || result.length() == 0) {
Toast.makeText(getActivity().getApplicationContext(),
"No data found from web.", Toast.LENGTH_SHORT).show();
} else {
try {
JSONObject topObject = new JSONObject(result);
JSONObject musicObject = topObject.getJSONObject(TAG_MUSIC);
JSONArray jsonArray = musicObject.getJSONArray(TAG_SONG);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject objJson = jsonArray.getJSONObject(i);
ReferenceTracks objItem = new ReferenceTracks();
objItem.setTitle(objJson.getString(TAG_TITLE));
objItem.setArtist(objJson.getString(TAG_ARTIST));
objItem.setDuration(objJson.getString(TAG_DURATION));
objItem.setThumbUrl(objJson.getString(TAG_THUMBURL));
arrayOfList.add(objItem);
}
} catch (JSONException e) {
e.printStackTrace();
}
setAdapterToListview();
}
}
public void setAdapterToListview() {
objRowAdapter = new RowAdapter(getActivity(), R.layout.reference_song_list_item, arrayOfList);
songsListView.setAdapter(objRowAdapter);
}
}}
这是我的自定义适配器：
This is my custom Adapter:
public class RowAdapter extends ArrayAdapter<ReferenceTracks> {
private Context activity;
private ArrayList<ReferenceTracks> items;
private ReferenceTracks objBean;
private int row;
private ImageLoader imageLoader;
private DisplayImageOptions options;
public RowAdapter(Context act, int resource, ArrayList<ReferenceTracks> arrayList) {
super(act, resource, arrayList);
this.activity = act;
this.row = resource;
this.items = arrayList;
imageLoader = ImageLoader.getInstance();
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
ViewHolder holder;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(row, null);
holder = new ViewHolder();
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
if ((items == null) || ((position + 1) > items.size()))
return view;
objBean = items.get(position);
holder.tvImage = (ImageView) view.findViewById(R.id.list_image);
holder.tvTitle = (TextView) view.findViewById(R.id.title);
holder.tvArtist = (TextView) view.findViewById(R.id.artist);
holder.tvDuration = (TextView) view.findViewById(R.id.duration);
holder.pbar = (ProgressBar) view.findViewById(R.id.progressbar);
if (holder.tvImage != null) {
if (null != objBean.getThumbUrl()
&& objBean.getThumbUrl().trim().length() > 0) {
final ProgressBar pbar = holder.pbar;
imageLoader.destroy();
imageLoader.init(ImageLoaderConfiguration.createDefault(activity));
imageLoader.displayImage(objBean.getThumbUrl(), holder.tvImage,
options, new ImageLoadingListener() {
@Override
public void onLoadingStarted(String imageUri,
View view) {
// TODO Auto-generated method stub
pbar.setVisibility(View.VISIBLE);
}
@Override
public void onLoadingFailed(String imageUri,
View view, FailReason failReason) {
// TODO Auto-generated method stub
pbar.setVisibility(View.INVISIBLE);
}
@Override
public void onLoadingComplete(String imageUri,
View view, Bitmap loadedImage) {
// TODO Auto-generated method stub
pbar.setVisibility(View.INVISIBLE);
}
@Override
public void onLoadingCancelled(String imageUri,
View view) {
// TODO Auto-generated method stub
}
});
} else {
holder.tvImage.setImageResource(R.drawable.ic_launcher);
}
}
if (holder.tvTitle != null && null != objBean.getTitle()
&& objBean.getTitle().trim().length() > 0) {
holder.tvTitle.setText(Html.fromHtml(objBean.getTitle()));
}
if (holder.tvArtist != null && null != objBean.getArtist()
&& objBean.getArtist().trim().length() > 0) {
holder.tvArtist.setText(Html.fromHtml(objBean.getArtist()));
}
if (holder.tvDuration != null && null != objBean.getDuration()
&& objBean.getDuration().trim().length() > 0) {
holder.tvDuration.setText(Html.fromHtml(objBean.getDuration()));
}
return view;
}
public class ViewHolder {
public ImageView tvImage;
public ProgressBar pbar;
public TextView tvTitle, tvArtist, tvDuration;
}}
虽然这是我的应用程序类：
While this is my application class:
public class SampleApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
DisplayImageOptions displayimageOptions = new DisplayImageOptions.Builder()
.showStubImage(R.drawable.ic_stub)
.showImageOnFail(R.drawable.ic_error)
.showImageForEmptyUri(R.drawable.ic_empty)
.cacheInMemory()
.cacheOnDisc()
.bitmapConfig(Bitmap.Config.RGB_565)
.imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2)
.build();
File cacheDir = StorageUtils.getCacheDirectory(getApplicationContext());
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
.threadPoolSize(4)
.threadPriority(Thread.NORM_PRIORITY)
.tasksProcessingOrder(QueueProcessingType.LIFO)
.defaultDisplayImageOptions(displayimageOptions)
.discCacheSize(50 * 1024 * 1024)
.discCacheFileCount(1000000)
.memoryCache(new WeakMemoryCache())
.build();
ImageLoader.getInstance().init(config);
}}
这也是日志：
06-24 11:18:12.935: E/ImageLoader(6428): null
06-24 11:18:12.935: E/ImageLoader(6428): java.io.EOFException
06-24 11:18:12.935: E/ImageLoader(6428): at libcore.io.Streams.readAsciiLine(Streams.java:203)
06-24 11:18:12.935: E/ImageLoader(6428): at libcore.net.http.HttpEngine.readResponseHeaders(HttpEngine.java:561)
06-24 11:18:12.935: E/ImageLoader(6428): at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:801)
06-24 11:18:12.935: E/ImageLoader(6428): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:274)
06-24 11:18:12.935: E/ImageLoader(6428): at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:479)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.download.BaseImageDownloader.getStreamFromNetwork(BaseImageDownloader.java:113)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.download.BaseImageDownloader.getStream(BaseImageDownloader.java:84)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.decode.BaseImageDecoder.getImageStream(BaseImageDecoder.java:84)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.decode.BaseImageDecoder.decode(BaseImageDecoder.java:73)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.decodeImage(LoadAndDisplayImageTask.java:290)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.tryLoadBitmap(LoadAndDisplayImageTask.java:250)
06-24 11:18:12.935: E/ImageLoader(6428): at com.nostra13.universalimageloader.core.LoadAndDisplayImageTask.run(LoadAndDisplayImageTask.java:131)
06-24 11:18:12.935: E/ImageLoader(6428): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
06-24 11:18:12.935: E/ImageLoader(6428): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
06-24 11:18:12.935: E/ImageLoader(6428): at java.lang.Thread.run(Thread.java:856)
有没有我做了错误的或者错过了ImageLoader的我的应用程序类的任何设置？我一直在寻找同样的异常，但似乎没有越来越接近修复。任何帮助都行。非常感谢！
Were there any settings I made wrong or missed on my application class for the imageloader? I've been searching for the same exception but nothing seems getting close to the fix. Any help will do. Many thanks!
推荐答案
我用了很长时间通用映像装载机工作。所以，我preFER有它在一类设置，然后我的应用程序可以简单地访问它。
I'm working with Universal image loader for a long time. So, I prefer to have it's settings in a class then my application is able to access it simply.
这是设置类通用映像加载器。我有一个应用程序包和这个类是这个包下。您可以通过在onLoadingComplete（）注释掉线，使图像曲线的角落。
This is setting class of Universal image loader. I have a utility package and this class is under this package. You are able to make corners of image curve by commenting out of lines in onLoadingComplete().
public class ImageDownloader {
private static final String TAG = "ImageDownloader";
public static final String DIRECTORY_NAME = "YOUR_DIRECTORY_NAME";
private static ImageDownloader instance = null;
private ImageLoader imageLoader;
protected ImageDownloader(Context context) {
// Exists only to defeat instantiation.
configImageDownloader(context);
}
public static ImageDownloader getInstance(Context context) {
if(instance == null) {
instance = new ImageDownloader(context);
}
return instance;
}
/**
* This constructor will configure loader object in order to display image.
* @param context
*/
private void configImageDownloader(Context context) {
File cacheDir = StorageUtils.getOwnCacheDirectory(context, DIRECTORY_NAME + "/Cache");
// Get singleton instance of ImageLoader
imageLoader = ImageLoader.getInstance();
// Create configuration for ImageLoader (all options are optional)
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).denyCacheImageMultipleSizesInMemory()
.memoryCache(new UsingFreqLimitedMemoryCache(4 * 1024 * 1024))
.discCache(new UnlimitedDiscCache(cacheDir))
.discCacheFileNameGenerator(new HashCodeFileNameGenerator())
.defaultDisplayImageOptions(
new DisplayImageOptions.Builder()
.showStubImage(R.drawable.ic_default_logo)
.resetViewBeforeLoading()
.cacheInMemory()
.cacheOnDisc()
.imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2)
.build())
.tasksProcessingOrder(QueueProcessingType.FIFO)
.build();
// Initialize ImageLoader with created configuration.
imageLoader.init(config);
}
public void displayImage(final ImageView imageView, String imageURI) {
if(imageView == null || imageURI == null) {
Log.e(TAG, "Either of image view or image uri is null");
return;
}
// Load and display image
imageLoader.displayImage(imageURI, imageView, new ImageLoadingListener() {
@Override
public void onLoadingStarted(String imageUri, View view) {}
@Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason) {}
@Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
// Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
// imageView.setImageBitmap(getRoundedCornerBitmap(bitmap, 30));
}
@Override
public void onLoadingCancelled(String imageUri, View view) {}
});
}
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = pixels;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
}
在您的适配器类，首先你需要，如果（查看== NULL）{...} 方法将所有定义为。我的样品适配器是这样的。你可以忽略我的听众是因为一个按钮，我有我的每一行中的。
In your adapter class, first you need move all definitions into if (view == null) {...}method. My sample adapter which is like this. You can ignore my listener which is because of a button that I have in my each row.
public class MyCrowdAdapter extends BaseAdapter {
public interface OnCrowdRemoveUserListener {
public void OnRemoveUserClicked(User user);
}
private final String TAG = "*** MyCrowdAdapter ***";
private Context context;
private OnCrowdRemoveUserListener listener;
private LayoutInflater myInflater;
private ImageDownloader imageDownloader;
private List<User> userList;
public MyCrowdAdapter(Context context) {
this.context = context;
myInflater = LayoutInflater.from(context);
imageDownloader = ImageDownloader.getInstance(context);
}
public void setData(List<User> userList) {
this.userList = userList;
Log.i(TAG, "List passed to the adapter.");
}
@Override
public int getCount() {
try {
return userList.size();
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = myInflater.inflate(R.layout.list_my_crowd_row, null);
holder = new ViewHolder();
Typeface font = Typeface.createFromAsset(context.getAssets(), "fonts/ITCAvantGardeStd-Demi.ttf");
holder.tvUserName = (TextView) convertView.findViewById(R.id.tvUserName);
holder.tvUserName.setTypeface(font);
holder.ivPicture = (ImageView) convertView.findViewById(R.id.ivPicture);
holder.btnRemove = (Button) convertView.findViewById(R.id.btnRemove);
holder.btnRemove.setFocusable(false);
holder.btnRemove.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Integer pos = (Integer)v.getTag();
Log.i(TAG, "Item: " + pos);
listener.OnRemoveUserClicked(userList.get(pos));
}
});
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.btnRemove.setTag(position);
holder.tvUserName.setText(userList.get(position).getFirstName());
imageDownloader.displayImage(holder.ivPicture, userList.get(position).getProfilePictureUrl());
return convertView;
}
public void setOnRemoveClickedListener(OnCrowdRemoveUserListener listener) {
this.listener = listener;
}
static class ViewHolder {
TextView tvUserName;
ImageView ivPicture;
Button btnRemove;
}
}
一个建议，而不是像这样验证：
如果（holder.tvTitle = NULL＆放大器;！＆安培;！NULL = objBean.getTitle（）
＆功放;＆安培; objBean.getTitle（）。修剪（）。长度（）> 0）{...}
只需使用<一个href=\"http://developer.android.com/reference/android/text/TextUtils.html#isEmpty%28java.lang.CharSequence%29\"相对=nofollow>文本实用程序这是静态方法，如下所示：
如果（TextUtils.isEmpty（objBean.getTitle！）;
One suggestion, instead of validation like this: if (holder.tvTitle != null && null != objBean.getTitle() && objBean.getTitle().trim().length() > 0) {...} simply use TextUtils which is static method, like this: if(!TextUtils.isEmpty(objBean.getTitle);
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更新
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关于您的问题，关于进度显示在图像的顶部：
它的简单和复杂的:)有两种方式，
第一个方法是根据你的code：
1，定义ImageDownloader类内部的界面就像我的内部适配器接口。应该是这样的：
About your question regard displaying progressbar on top of image: It's simple and complex :) there are two ways, 1st way is based on your code: 1-define an interface inside ImageDownloader class like my interface inside adapter. should be something like this:
public interface OnImageDownloaderListener {
public void OnDownloadStarted();
public void OnDownloadFinished();
}
2 - 声明它decleration部分
2- Declare it in decleration part
OnImageDownloaderListener listener;
3更改thosr两个侦听这样
3- Change thosr two listeners like this
@Override
public void onLoadingStarted(String imageUri, View view) {
listener.OnDownloadStarted();
}
@Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
// Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
// imageView.setImageBitmap(getRoundedCornerBitmap(bitmap, 30));
listener.OnDownloadFinished();
}
4-这种方法添加到ImageDownloader类
4- Add this method to ImageDownloader class
public void setOnImageDownloaderListener(OnImageDownloaderListener listener) {
this.listener = listener;
}
5-适配器和下面这行：
5- In your adapter and below this line:
imageDownloader = ImageDownloader.getInstance(context);
执行这样这两methodes：
implement those two methodes like this:
imageDownloader.setOnImageDownloaderListener(new ImageDownloader.OnImageDownloaderListener{
@Override
public void OnDownloadStarted() {
pbar.start();
}
@Override
public void OnDownloadFinished(){
pbar.stop();
}
}
);
这应该帮助你。不过，如果我是你，我确实是创造新的组件第二种方法。该组件包括两个视图图像视图和顶部进度（你也一样有什么目前）。然后加入全部高于组件类中的方法。因此，很容易通过你的应用程序，你在任何活动你愿意，你可以添加自己的观点，只是通过URL那么组件负责显示进度并停止它。您code根据，如果你有10 similr活动，你需要复制/粘贴上面code。
It should help you. However, if I were you I does second approach which is creating new component. The component includes two views an image view and progressbar on top (same to what you have currently). Then add all above method inside that component class. So, easily through your app you in whatever activity you want you can add your view and just pass URL then the component is responsible to display progressbar and stop it. Based on your code if you have 10 similr activities you need to copy/paste above code.
希望它可以帮助你：）
这篇关于通用ImageLoader的java.io.EOFException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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