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我在片段中使用网格视图。我在 doInBackground 中加载 gridview。但是，我得到 AsyncTask#1 致命异常。以下是我尝试过的代码：

public class Home extends Fragment implements TabHost.OnTabChangeListener,
        OnClickListener {

    TabHost tabHost;
    View vi;
    StaggeredAdapter adapter;
    TextView tv;
    public String urls[] = {

    "http://farm9.staticflickr.com/8462/8005636463_0cb4ea6be2.jpg",
            "http://farm8.staticflickr.com/7232/6913504132_a0fce67a0e_c.jpg",
            "http://farm5.staticflickr.com/4133/5096108108_df62764fcc_b.jpg",
            "http://farm5.staticflickr.com/4074/4789681330_2e30dfcacb_b.jpg",
            "http://farm9.staticflickr.com/8208/8219397252_a04e2184b2.jpg",
            "http://farm9.staticflickr.com/8483/8218023445_02037c8fda.jpg",
            "http://farm9.staticflickr.com/8335/8144074340_38a4c622ab.jpg",
            "http://farm9.staticflickr.com/8060/8173387478_a117990661.jpg",
            "http://farm9.staticflickr.com/8056/8144042175_28c3564cd3.jpg",
            "http://farm9.staticflickr.com/8183/8088373701_c9281fc202.jpg",
            "http://farm9.staticflickr.com/8185/8081514424_270630b7a5.jpg",
            "http://farm9.staticflickr.com/8462/8005636463_0cb4ea6be2.jpg",
            "http://farm9.staticflickr.com/8306/7987149886_6535bf7055.jpg",
            "http://farm9.staticflickr.com/8444/7947923460_18ffdce3a5.jpg",
            "http://farm9.staticflickr.com/8182/7941954368_3c88ba4a28.jpg",
            "http://farm9.staticflickr.com/8304/7832284992_244762c43d.jpg",
            "http://farm9.staticflickr.com/8163/7709112696_3c7149a90a.jpg",
            "http://farm8.staticflickr.com/7127/7675112872_e92b1dbe35.jpg",
            "http://farm8.staticflickr.com/7111/7429651528_a23ebb0b8c.jpg",
            "http://farm9.staticflickr.com/8288/7525381378_aa2917fa0e.jpg",
            "http://farm6.staticflickr.com/5336/7384863678_5ef87814fe.jpg",
            "http://farm8.staticflickr.com/7102/7179457127_36e1cbaab7.jpg",
            "http://farm8.staticflickr.com/7086/7238812536_1334d78c05.jpg",
            "http://farm8.staticflickr.com/7243/7193236466_33a37765a4.jpg",
            "http://farm8.staticflickr.com/7251/7059629417_e0e96a4c46.jpg",
            "http://farm8.staticflickr.com/7084/6885444694_6272874cfc.jpg" };

    public static final String ARG_SECTION_NUMBER = "section_number";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        vi = inflater.inflate(R.layout.home, container, false);
        Button iv = (Button) vi.findViewById(R.id.btnMoreDialog);
        iv.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                PopupMenu homepopup = new PopupMenu(getActivity(), v);

                MenuInflater inflater = homepopup.getMenuInflater();

                inflater.inflate(R.menu.moredialog, homepopup.getMenu());

                homepopup.show();

            }
        });


        new Dialogs().execute(urls);
        return vi;
    }

    private class Dialogs extends AsyncTask<String[] , Void, Void>
    {
        @Override
        protected Void doInBackground(String[]... params) {
            StaggeredGridView gridView = (StaggeredGridView) vi
                    .findViewById(R.id.staggeredGridView1);

            int margin = getResources().getDimensionPixelSize(R.dimen.margin);
            gridView.setItemMargin(margin);
            gridView.setPadding(margin, 0, margin, 0);

            // StaggeredAdapter adapter = new StaggeredAdapter(MainActivity.this,
            // R.id.photoimageview, urls, R.layout.row_staggered_demo);

            StaggeredAdapter adapter = new StaggeredAdapter(vi.getContext(),
                    R.id.photoimageview, params[0], R.layout.row_staggered_demo);

            gridView.setAdapter(adapter);

           return null;
       }


        @Override
        protected void onPostExecute(Void result) {


        }
        @Override
        protected void onPreExecute() {


        }

    }

}

有什么想法吗？谢谢，

4

1 回答 1

1

您正在尝试更新doInbackground不可能的 ui。

       gridView.setAdapter(adapter);

您需要在 ui 线程上更新 ui。

在中使用runOnUiThread或更新 uionPostExecute

      getActivity().runOnUiThread(new Runnable() //run on ui thread
                 {
                  public void run() 
                  { 

                 }
                 });
于 2013-07-03T13:11:17.110 回答