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我一直在尋找一種方式來做一個單獨的線程畢加索,因爲它是從互聯網上加載它。我不知道如何確認。Picasso Image加載到多線程?
我的應用程序基本上是一個ListView與一個imageView和兩個textViews,我創建了一個CustomAdapter,它擴展了BaseAdapter以協助列表。這是我在我的適配器類都做:
public class CustomAdapter extends BaseAdapter
{
public String title[];
public String description[];
public String images[]; //Image URLs
private static Picasso instance;
public Activity context;
public LayoutInflater inflater;
public CustomAdapter(Activity context, String[] title, String[] description, String[] images) {
super();
this.context = context;
this.title = title;
this.description = description;
this.images = images;
this.inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return title.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public static Picasso getSharedInstance(Context context)
{
if(instance == null)
{
instance = new Picasso.Builder(context).executor(Executors.newSingleThreadExecutor()).memoryCache(Cache.NONE).indicatorsEnabled(true).build();
return instance;
}
else
{
return instance;
}
}
public static class ViewHolder
{
ImageView icon;
TextView itemNameTextView;
TextView itemDescriptionTextView;
}
@Override
public View getView(int position, View view, ViewGroup parent) {
// TODO Auto-generated method stub
Debug.startMethodTracing("ThreadCheck");
ViewHolder holder;
if(view==null)
{
holder = new ViewHolder();
view = inflater.inflate(R.layout.list_item, null);
holder.icon = (ImageView) view.findViewById(R.id.DownloadedImage);
holder.itemNameTextView = (TextView) view.findViewById(R.id.ItemNameTextView);
holder.itemDescriptionTextView = (TextView) view.findViewById(R.id.ItemDescriptionTextView);
view.setTag(holder);
}
else
holder=(ViewHolder)view.getTag();
Picasso.with(context).load(images[position]).into(holder.icon);
holder.itemNameTextView.setText(title[position]);
holder.itemDescriptionTextView.setText(description[position]);
return view;
}
}
我想知道的是什麼:
1)執行以下操作使畢加索在一個單獨的線程加載圖像? (我讀這個地方並沒有真正意義的我,我希望你們會向我解釋。)
instance = new Picasso.Builder(context).executor(Executors.newSingleThreadExecutor()).memoryCache(Cache.NONE).indicatorsEnabled(true).build();
2)或根本
Picasso.with(context).load(images[position]).into(holder.icon);
自動完成它在一個新的線程?
3)或者,這些都不是在一個新的線程中,我需要單獨做它?如果是,那又如何?
在此先感謝!
'Picasso'在默認情況下在後臺線程中從Internet下載圖像。你想確認什麼? –
是的,它使用分離的線程,而不是用於圖像加載的UI線程。 – anhtuannd
畢加索在後臺線程下載,使用默認上下文並使用構建器...您永遠不會得到NetworkOnMainThreadException .. – Kushan