如何在用AsyncTask解析SAXParser时添加SAXParser？

Question

我需要在此添加一个AsyncTask，因为它不适用于API级别10-15，或者将姜饼添加到ICS中。试着添加，但我没有任何成功。

public class GBXMLParser extends Activity {
/** Create Object For SiteList Class */
SiteList sitesList = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    /** Create a new layout to display the view */
    LinearLayout layout = new LinearLayout(this);
    layout.setOrientation(1);
    /** Set the layout view to display */
    this.setContentView(layout);

    /** Create a new TextView array to display the results */
    TextView name[];
    TextView website[];
    TextView category[];

    try {
        /** Handling XML */
        SAXParserFactory spf = SAXParserFactory.newInstance();
        SAXParser sp = spf.newSAXParser();
        XMLReader xr = sp.getXMLReader();

        /** Send URL to parse XML Tags */
        URL sourceUrl = new URL("http://url.xml");

        /** Create handler to handle XML Tags ( extends DefaultHandler ) */
        MyXMLHandler myXMLHandler = new MyXMLHandler();
        xr.setContentHandler(myXMLHandler);
        xr.parse(new InputSource(sourceUrl.openStream()));
    } catch (Exception e) {
        System.out.println("XML Pasing Excpetion = " + e);
    }

    /** Get result from MyXMLHandler SitlesList Object */
    sitesList = MyXMLHandler.sitesList;

    /** Assign TextView array length by arrayList size */
    name = new TextView[sitesList.getName().size()];
    website = new TextView[sitesList.getName().size()];
    category = new TextView[sitesList.getName().size()];

    /** Set the result text in TextView and add it to layout */
    for (int i = 0; i < sitesList.getName().size(); i++) {
        name[i] = new TextView(this);
        name[i].setText("Name = " + sitesList.getName().get(i));
        website[i] = new TextView(this);
        website[i].setText("Website = " + sitesList.getWebsite().get(i));
        category[i] = new TextView(this);
        category[i].setText("Website Category = "
                + sitesList.getCategory().get(i));
        layout.addView(name[i]);
        layout.addView(website[i]);
        layout.addView(category[i]);
    }
}
}

Answer 1

  public class MyAsyncTask extends AsyncTask<Void, Void, Result>{

                        private Activity activity;
                        private ProgressDialog progressDialog;

            public MyAsyncTask(Activity activity) {
                            super();
                this.activity = activity;
            }

            @Override
            protected void onPreExecute() {
            super.onPreExecute();
                progressDialog = ProgressDialog.show(activity, "Loading", "Loading", true);
            }

            @Override
            protected Result doInBackground(Void... v) {
            //do your stuff here
            return null;

            }

            @Override
            protected void onPostExecute(Result result) {
                progressDialog.dismiss();
                Toast.makeText(activity.getApplicationContext(), "Finished.", 
                        Toast.LENGTH_LONG).show();
            }


}

从活动中调用它：

MyAsyncTask task = new AsyncTask(myActivity.this);
task.execute();