我有一个EditText这需要从用户和searchButton一个字符串。 当searchButton被点击时，它会通过搜索XML文件，并在ListView中显示。 我能够把来自用户的输入，通过搜索XML文件，并显示在ListView也usersearched值。 我要的是显示了searchButton被点击，如请稍候...检索数据...或者类似的东西，并关闭它时，数据是 ProgressDialog 之后如图所示。

 公共类Tab1Activity扩展ListActivity {
私人按钮okButton;
私人按钮searchButton;
吐司面包;
XML字符串;

私人TextView的searchText;
私人字符串searchTextString;
HashMap的＆LT;字符串，字符串＆GT; O;
ArrayList的＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; mylist中=新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT;（）;


@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.tab1）;

    sea​​rchButton =（按钮）findViewById（R.id.search_button）;
    sea​​rchButton.setOnClickListener（新View.OnClickListener（）{

        公共无效的onClick（视图v）{
            // TODO自动生成方法存根
            System.out.print（你好）;

            sea​​rchText =（TextView中）findViewById（R.id.search_text）;
            。searchTextString = searchText.getText（）的toString（）;
            ReadXML的（searchTextString）;

        }
    }）;

}



私人无效的ReadXml（字符串searchTextString1）{
    ArrayList的＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; mylist中=新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT;（）;

    XML字符串= XMLfunctions.getXML（）;
            //这里XMLfunctions是解析XML的类名
    文档DOC = XMLfunctions.XMLfromString（XML）;

    INT numResults = XMLfunctions.numResults（DOC）;

    如果（（numResults＆所述; = 0））{
        Toast.makeText（Tab1Activity.this，测试XMLParser的，
                Toast.LENGTH_LONG）.show（）;
        完（）;
    }

    节点列表节点= doc.getElementsByTagName（结果）;

    的for（int i = 0; I＆LT; nodes.getLength（）;我++）{
        HashMap的＆LT;字符串，字符串＆GT;图=新的HashMap＆LT;字符串，字符串＆GT;（）;

        元素e =（元）nodes.item（我）;
        字符串nameMapString = XMLfunctions.getValue（即名）;



         如果（nameMapString.toLowerCase（）。的indexOf（searchTextString1.toLowerCase（））！=  -  1）//！= -1表示字符串是present在搜索字符串
            {
                map.put（ID，XMLfunctions.getValue（即，ID））;
                map.put（名，XMLfunctions.getValue（即名））;
                map.put（分数，XMLfunctions.getValue（即分数））;
                mylist.add（图）
            }
    }

    ListAdapter适配器=新SimpleAdapter（这一点，mylist中，
            R.layout.parsexml，新的String [] {姓名，分数}，新的INT [] {
                    R.id.item_title，R.id.item_subtitle}）;

    setListAdapter（适配器）;

    最终的ListView LV = getListView（）;
    lv.setTextFilterEnabled（真正的）;
    lv.setOnItemClickListener（新OnItemClickListener（）{
        公共无效onItemClick（适配器视图＆LT;＆GT;母公司视图中查看，
                INT位置，长的id）{
            @燮pressWarnings（未登记）
            HashMap的＆LT;字符串，字符串＆GT; O =（HashMap的＆LT;字符串，字符串＆GT;）LV
                    .getItemAtPosition（位置）;


                Toast.makeText（Tab1Activity.this，
                         姓名+ o.get（姓名）+点击，Toast.LENGTH_LONG）
                        。显示（）;

        }
    }）;
}
 

解决方案

声明你的进度对话框：

  ProgressDialog进展情况;
 

当你准备开始进度对话框：

 进度= ProgressDialog.show（这一点，对话框标题
    对话消息，真正的）;
 

和使之消失时，你就大功告成了：

  progress.dismiss（）;
 

这里是你一个小螺纹例如：

  //注意：声明ProgressDialog进度，在你的类中的字段。

进度= ProgressDialog.show（这一点，对话框标题
  对话消息，真正的）;

新主题（新的Runnable（）{
  @覆盖
  公共无效的run（）
  {
    //做到这一点需要很长时间的东西

    runOnUiThread（新的Runnable（）{
      @覆盖
      公共无效的run（）
      {
        progress.dismiss（）;
      }
    }）;
  }
}）。开始（）;
 

I have an EditText which takes a String from the user and a searchButton. When the searchButton is clicked, it will search through the XML file and display it in the ListView. I am able to take input from the user, search through the XML file and display the usersearched value in the ListView also. What I want is to display a ProgressDialog after the searchButton is clicked like "PLEASE WAIT...RETRIEVING DATA..." or something like that and dismiss it when the data is shown.

public class Tab1Activity extends ListActivity {
private Button okButton;
private Button searchButton;
Toast toast;
String xml;

private TextView searchText;
private String searchTextString;
HashMap<String, String> o;
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.tab1);

    searchButton = (Button) findViewById(R.id.search_button);
    searchButton.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            System.out.print("hello");

            searchText = (TextView) findViewById(R.id.search_text);
            searchTextString = searchText.getText().toString();
            readXml(searchTextString);

        }
    });

}



private void readXml(String searchTextString1) {
    ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();

    String xml = XMLfunctions.getXML();
            //Here XMLfunctions is class name which parse xml
    Document doc = XMLfunctions.XMLfromString(xml);

    int numResults = XMLfunctions.numResults(doc);

    if ((numResults <= 0)) {
        Toast.makeText(Tab1Activity.this, "Testing xmlparser",
                Toast.LENGTH_LONG).show();
        finish();
    }

    NodeList nodes = doc.getElementsByTagName("result");

    for (int i = 0; i < nodes.getLength(); i++) {
        HashMap<String, String> map = new HashMap<String, String>();

        Element e = (Element) nodes.item(i);
        String nameMapString = XMLfunctions.getValue(e, "name");



         if ( nameMapString.toLowerCase().indexOf(searchTextString1.toLowerCase()) != -1 )   // != -1 means string is present in the search string
            {
                map.put("id", XMLfunctions.getValue(e, "id"));
                map.put("name",  XMLfunctions.getValue(e, "name"));
                map.put("Score",  XMLfunctions.getValue(e, "score"));
                mylist.add(map);
            }
    }

    ListAdapter adapter = new SimpleAdapter(this, mylist,
            R.layout.parsexml, new String[] { "name", "Score" }, new int[] {
                    R.id.item_title, R.id.item_subtitle });

    setListAdapter(adapter);

    final ListView lv = getListView();
    lv.setTextFilterEnabled(true);
    lv.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            @SuppressWarnings("unchecked")
            HashMap<String, String> o = (HashMap<String, String>) lv
                    .getItemAtPosition(position);


                Toast.makeText(Tab1Activity.this,
                         "Name "+o.get("name")+"  Clicked", Toast.LENGTH_LONG)
                        .show();                

        }
    });
}

Declare your progress dialog:

ProgressDialog progress;

When you're ready to start the progress dialog:

progress = ProgressDialog.show(this, "dialog title",
    "dialog message", true);

and to make it go away when you're done:

progress.dismiss();

Here's a little thread example for you:

// Note: declare ProgressDialog progress as a field in your class.

progress = ProgressDialog.show(this, "dialog title",
  "dialog message", true);

new Thread(new Runnable() {
  @Override
  public void run()
  {
    // do the thing that takes a long time

    runOnUiThread(new Runnable() {
      @Override
      public void run()
      {
        progress.dismiss();
      }
    });
  }
}).start();