畢加索圖書館和GridView圖像

Question

我想建立一個應用程序，通過使用畢加索圖書館在gridview中顯示圖像。圖像由遠程服務器檢索。我應該製作一個AsyncTask類還是該類由畢加索圖書館本身處理？到目前爲止，我所見過的所有畢加索教程都顯得有些模糊。

謝謝，

泰奧。

Answer 1

它的使用方法很簡單畢加索lib中加載圖像在GridView中，as demonstrated here，

class SampleGridViewAdapter extends BaseAdapter { 
    private final Context context; 
    private final List<String> urls = new ArrayList<String>(); 

    public SampleGridViewAdapter(Context context) { 
    this.context = context; 

    // Ensure we get a different ordering of images on each run. 
    Collections.addAll(urls, Data.URLS); 
    Collections.shuffle(urls); 

    // Triple up the list. 
    ArrayList<String> copy = new ArrayList<String>(urls); 
    urls.addAll(copy); 
    urls.addAll(copy); 
    } 

    @Override public View getView(int position, View convertView, ViewGroup parent) { 
    SquaredImageView view = (SquaredImageView) convertView; 
    if (view == null) { 
     view = new SquaredImageView(context); 
     view.setScaleType(CENTER_CROP); 
    } 

    // Get the image URL for the current position. 
    String url = getItem(position); 

    // Trigger the download of the URL asynchronously into the image view. 
    Picasso.with(context) // 
     .load(url) // 
     .placeholder(R.drawable.placeholder) // 
     .error(R.drawable.error) // 
     .fit() // 
     .tag(context) // 
     .into(view); 

    return view; 
    } 

    @Override public int getCount() { 
    return urls.size(); 
    } 

    @Override public String getItem(int position) { 
    return urls.get(position); 
    } 

    @Override public long getItemId(int position) { 
    return position; 
    } 
}