0

我正在使用 Picasso 在我的 Android 应用程序中设置网格视图。我想做的基本上是在网格视图中按下图像并转到详细视图。

数据填充在字符串数组中,如下所示:

static final String[] URLS = {
   "http://i.imgur.com/file1.jpg", "http://i.imgur.com/file2.jpg",
   "http://i.imgur.com/file3.jpg", "http://i.imgur.com/file4.jpg"
};

ImageAdapter这些 URL 中,将被放入一个 String ArrayList 中:

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

  public ImageAdapter(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);
  }

  @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()
        .centerCrop()//
        .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;
  }

}

问题是当我想获取项目的 ID 时,它都存储在字符串中。这是我的详细信息视图活动的样子:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.full_image);

    // get intent data
    Intent i = getIntent();

    // Selected image id
    int position = i.getExtras().getInt("id");
    ImageAdapter ia = new ImageAdapter(this);

    ImageView iv = (ImageView) findViewById(R.id.full_image_view);
    iv.setImageResource(ia.getItemId(position));
}

position是来自我的主要活动,它是整数。当我想放置 getItemId 时,setImageResource会引发此错误:

ImageView 类型中的方法 setImageResource(int) 不适用于参数(long)

你们知道如何解决这个问题吗?

编辑:添加 ImageAdapter 类代码

4

1 回答 1

2

您仍然需要在详细视图中调用 Picasso 并从适配器传递 URL,而不是 ID。

Picasso.with(context) //
    .load(ia.getItem(position)) //
    .placeholder(R.drawable.placeholder) //
    .error(R.drawable.error) //
    .fit()
    .centerCrop()//
    .into(iv);
于 2013-10-04T08:25:19.377 回答