问题
In my app, i have a listview with some items. Each item has a img which is downloaded from distant url.
I use ImageLoader library to load each image into my app.
My listview is well built, i have all images, but i have a warning in LogCat :
02-05 15:16:17.938: W/ImageLoader(17363): Try to initialize ImageLoader which had already been initialized before. To re-init ImageLoader with new configuration call ImageLoader.destroy() at first.
I don't know how to fix this issue ?
Here the code of my adapter :
public class ArticleListAdapterHome extends ArrayAdapter<ArticleHome> {
Typeface faceLight = Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Light.ttf");
Typeface faceBold = Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Bold.ttf");
public ArticleListAdapterHome(Activity activity, List<ArticleHome> articles) {
super(activity, 0, articles);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Activity activity = (Activity) getContext();
LayoutInflater inflater = activity.getLayoutInflater();
View rowView;
ArticleHome article = getItem(position);
if (position == 0) {
rowView = inflater.inflate(R.layout.item_ligne_home_premier, null);
////////////////////////////////////////////////////////
///// IMAGE
///////////////////////////////////////////////////////
ImageView imgfirst = (ImageView) rowView.findViewById(R.id.imgimg) ;
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheInMemory(true)
.cacheOnDisc(true)
.build();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getContext())
.defaultDisplayImageOptions(options)
.threadPriority(Thread.MAX_PRIORITY)
.denyCacheImageMultipleSizesInMemory()
.memoryCacheSize(2 * 1024 * 1024)
.build();
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.init(config);
imageLoader.displayImage(article.getImage(), imgfirst);
ListView listV = (ListView)parent;
boolean pauseOnScroll = false; // or true
boolean pauseOnFling = true; // or false
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, pauseOnScroll, pauseOnFling);
listV.setOnScrollListener(listener);
////////////////////////////////////////////////////////
///// TITLE
///////////////////////////////////////////////////////
TextView textView = (TextView) rowView.findViewById(R.id.titlepremier);
textView.setText(article.getTitle());
textView.setTypeface(faceLight);
}
else {
rowView = inflater.inflate(R.layout.item_ligne_home, null);
////////////////////////////////////////////////////////
///// IMAGE
///////////////////////////////////////////////////////
ImageView img = (ImageView) rowView.findViewById(R.id.imgimg) ;
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheInMemory(true)
.cacheOnDisc(true)
.build();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getContext())
.defaultDisplayImageOptions(options)
.threadPriority(Thread.MAX_PRIORITY)
.denyCacheImageMultipleSizesInMemory()
.memoryCacheSize(2 * 1024 * 1024)
.build();
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.init(config);
imageLoader.displayImage(article.getImage(), img);
ListView listV = (ListView)parent;
boolean pauseOnScroll = false; // or true
boolean pauseOnFling = true; // or false
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, pauseOnScroll, pauseOnFling);
listV.setOnScrollListener(listener);
////////////////////////////////////////////////////////
///// TITLE
///////////////////////////////////////////////////////
TextView title = (TextView) rowView.findViewById(R.id.titlearticleothers);
title.setText(article.getTitle());
title.setTypeface(faceBold);
////////////////////////////////////////////////////////
///// DESCRIPTION
///////////////////////////////////////////////////////
TextView desc = (TextView) rowView.findViewById(R.id.descriptionarticleothers);
desc.setText(article.getDescription());
desc.setTypeface(faceLight);
////////////////////////////////////////////////////////
///// DATE
///////////////////////////////////////////////////////
TextView date = (TextView) rowView.findViewById(R.id.date);
String pubDate = article.getPubDate();
SimpleDateFormat df = new SimpleDateFormat("EEE, dd MMM yyyy kk:mm:ss Z", Locale.ENGLISH);
Date pDate;
try {
pDate = df.parse(pubDate);
pubDate = DateUtils.getDateDifference(pDate);
pubDate = pubDate.replace("-", "");
} catch (ParseException e) {
Log.e("DATE PARSING", "Error parsing date..");
pubDate = "published by " + article.getAuthor();
}
date.setText("Il y a " +pubDate);
}
return rowView;
}
回答1:
This error occurs when you are trying to initialize ImageLoader when it is already initialized.
In my app I initialized ImageLoader two ways in different activities:
1:
imageLoader.init(ImageLoaderConfiguration.createDefault(this.getSherlockActivity()));
2:
initImageLoader(); //where this function contained the configuration settings.
In my app I am using a ViewPager which causes this error and this is why:
It's important to know that when you open a tab in the ViewPager it automatically loads the second tab in the background.
Let's say this initialization was set on the first tab. So when you go to the second and the third tab then you go back to the second tab then the first one is loaded and it tries to initialize ImageLoader again.
What you need to do is check if it was initialized
if (!imageLoader.isInited()) {
initImageLoader();
}
回答2:
ImageLoader must be initializated only once. You initializate every time when getView() method is called. It's could be better initializate imageLoder in your class extended from application
public class MyApp extends Application {
public void onCreate() {
super.onCreate();
ContextHolder.context = getApplicationContext();
// Create global configuration and initialize ImageLoader with this configuration
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
.memoryCache(new UsingFreqLimitedMemoryCache(5 * 1024 * 1024)) // 5 Mb (delete most not used image)
.build();
ImageLoader.getInstance().init(config);
}
}
Your adapter after that
public class ArticleListAdapterHome extends ArrayAdapter<ArticleHome> {
Typeface faceLight = Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Light.ttf");
Typeface faceBold = Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Bold.ttf");
private ImageLoader imageLoader;
public ArticleListAdapterHome(Activity activity, List<ArticleHome> articles) {
super(activity, 0, articles);
imageLoader = ImageLoader.getInstance();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Activity activity = (Activity) getContext();
LayoutInflater inflater = activity.getLayoutInflater();
View rowView;
ArticleHome article = getItem(position);
if (position == 0) {
rowView = inflater.inflate(R.layout.item_ligne_home_premier, null);
////////////////////////////////////////////////////////
///// IMAGE
///////////////////////////////////////////////////////
ImageView imgfirst = (ImageView) rowView.findViewById(R.id.imgimg) ;
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheInMemory(true)
.cacheOnDisc(true)
.build();
imageLoader.displayImage(article.getImage(), imgfirst);
ListView listV = (ListView)parent;
boolean pauseOnScroll = false; // or true
boolean pauseOnFling = true; // or false
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, pauseOnScroll, pauseOnFling);
listV.setOnScrollListener(listener);
////////////////////////////////////////////////////////
///// TITLE
///////////////////////////////////////////////////////
TextView textView = (TextView) rowView.findViewById(R.id.titlepremier);
textView.setText(article.getTitle());
textView.setTypeface(faceLight);
}
else {
rowView = inflater.inflate(R.layout.item_ligne_home, null);
////////////////////////////////////////////////////////
///// IMAGE
///////////////////////////////////////////////////////
ImageView img = (ImageView) rowView.findViewById(R.id.imgimg) ;
DisplayImageOptions options = new DisplayImageOptions.Builder()
.cacheInMemory(true)
.cacheOnDisc(true)
.build();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getContext())
.defaultDisplayImageOptions(options)
.threadPriority(Thread.MAX_PRIORITY)
.denyCacheImageMultipleSizesInMemory()
.memoryCacheSize(2 * 1024 * 1024)
.build();
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.init(config);
imageLoader.displayImage(article.getImage(), img);
ListView listV = (ListView)parent;
boolean pauseOnScroll = false; // or true
boolean pauseOnFling = true; // or false
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, pauseOnScroll, pauseOnFling);
listV.setOnScrollListener(listener);
////////////////////////////////////////////////////////
///// TITLE
///////////////////////////////////////////////////////
TextView title = (TextView) rowView.findViewById(R.id.titlearticleothers);
title.setText(article.getTitle());
title.setTypeface(faceBold);
////////////////////////////////////////////////////////
///// DESCRIPTION
///////////////////////////////////////////////////////
TextView desc = (TextView) rowView.findViewById(R.id.descriptionarticleothers);
desc.setText(article.getDescription());
desc.setTypeface(faceLight);
////////////////////////////////////////////////////////
///// DATE
///////////////////////////////////////////////////////
TextView date = (TextView) rowView.findViewById(R.id.date);
String pubDate = article.getPubDate();
SimpleDateFormat df = new SimpleDateFormat("EEE, dd MMM yyyy kk:mm:ss Z", Locale.ENGLISH);
Date pDate;
try {
pDate = df.parse(pubDate);
pubDate = DateUtils.getDateDifference(pDate);
pubDate = pubDate.replace("-", "");
} catch (ParseException e) {
Log.e("DATE PARSING", "Error parsing date..");
pubDate = "published by " + article.getAuthor();
}
date.setText("Il y a " +pubDate);
}
return rowView;
}
回答3:
There something wrong with your adapter. Just a try:
public class ArticleListAdapterHome extends ArrayAdapter<ArticleHome> {
private Activity activity;
private static LayoutInflater inflater=null;
public ImageLoader imageLoader;
Typeface faceLight = Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Light.ttf");
Typeface faceBold = Typeface.createFromAsset(getContext().getAssets(), "fonts/Roboto-Bold.ttf");
public ArticleListAdapterHome(Activity activity, List<ArticleHome> articles) {
activity = a;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader=new ImageLoader(activity.getApplicationContext());
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView;
ArticleHome article = getItem(position);
if (position == 0) {
rowView = inflater.inflate(R.layout.item_ligne_home_premier, null);
////////////////////////////////////////////////////////
///// IMAGE
///////////////////////////////////////////////////////
ImageView imgfirst = (ImageView) rowView.findViewById(R.id.imgimg) ;
imageLoader.displayImage(article.getImage(), imgfirst);
ListView listV = (ListView)parent;
boolean pauseOnScroll = false; // or true
boolean pauseOnFling = true; // or false
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, pauseOnScroll, pauseOnFling);
listV.setOnScrollListener(listener);
////////////////////////////////////////////////////////
///// TITLE
///////////////////////////////////////////////////////
TextView textView = (TextView) rowView.findViewById(R.id.titlepremier);
textView.setText(article.getTitle());
textView.setTypeface(faceLight);
}
else {
rowView = inflater.inflate(R.layout.item_ligne_home, null);
////////////////////////////////////////////////////////
///// IMAGE
///////////////////////////////////////////////////////
ImageView img = (ImageView) rowView.findViewById(R.id.imgimg) ;
imageLoader.displayImage(article.getImage(), img);
ListView listV = (ListView)parent;
boolean pauseOnScroll = false; // or true
boolean pauseOnFling = true; // or false
PauseOnScrollListener listener = new PauseOnScrollListener(imageLoader, pauseOnScroll, pauseOnFling);
listV.setOnScrollListener(listener);
////////////////////////////////////////////////////////
///// TITLE
///////////////////////////////////////////////////////
TextView title = (TextView) rowView.findViewById(R.id.titlearticleothers);
title.setText(article.getTitle());
title.setTypeface(faceBold);
////////////////////////////////////////////////////////
///// DESCRIPTION
///////////////////////////////////////////////////////
TextView desc = (TextView) rowView.findViewById(R.id.descriptionarticleothers);
desc.setText(article.getDescription());
desc.setTypeface(faceLight);
////////////////////////////////////////////////////////
///// DATE
///////////////////////////////////////////////////////
TextView date = (TextView) rowView.findViewById(R.id.date);
String pubDate = article.getPubDate();
SimpleDateFormat df = new SimpleDateFormat("EEE, dd MMM yyyy kk:mm:ss Z", Locale.ENGLISH);
Date pDate;
try {
pDate = df.parse(pubDate);
pubDate = DateUtils.getDateDifference(pDate);
pubDate = pubDate.replace("-", "");
} catch (ParseException e) {
Log.e("DATE PARSING", "Error parsing date..");
pubDate = "published by " + article.getAuthor();
}
date.setText("Il y a " +pubDate);
}
return rowView;
}
Dear user, you need to refer this link: http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/ Check how custom adapter is implemented..
来源：https://stackoverflow.com/questions/21579826/fix-a-warning-of-imageloader-try-to-initialize-imageloader-which-had-already