Hi I am writing application to get all information from a url. Parser is
working well. but it takes some time about 2 sec to decode all.Till it
decode and enter into listView Page/View is not shown.
What i want is show the page loading icon(progress bar) before call url,
and then hide it after loaded from url.
package packege.cse.updates;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import packege.lottery.result.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.AdapterView;
import android.widget.Toast;
public class cseWatch extends Activity {
TextView txt1 ;
Button btnBack;
ListView listView1;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.searchresult);
Button btnBack=(Button) findViewById(R.id.btn_bck);
btnBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent MyIntent1 = new
Intent(v.getContext(),cseWatchMain.class);
startActivity(MyIntent1);
}
});
ArrayList<SearchResults> searchResults = GetSearchResults();
//after loaded result hide progress bar
ProgressBar pb = (ProgressBar) findViewById(R.id.progressBar1);
pb.setVisibility(View.INVISIBLE);
final ListView lv = (ListView) findViewById(R.id.listView1);
lv.setAdapter(new MyCustomBaseAdapter(cseWatch.this,
searchResults));
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View v, int position,
long id) {
Object o = lv.getItemAtPosition(position);
SearchResults fullObject = (SearchResults)o;
Toast.makeText(cseWatch.this, "You have chosen: " + " " +
fullObject.getName(), Toast.LENGTH_LONG).show();
}
});
}//end of onCreate
private ArrayList<SearchResults> GetSearchResults(){
ArrayList<SearchResults> results = new ArrayList<SearchResults>();
SearchResults sr;
InputStream in;
try{
txt1 = (TextView) findViewById(R.id.txtDisplay);
txt1.setText("Sending request...");
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://myurl?reportType=CSV";);
HttpResponse response = httpclient.execute(httpget);
in = response.getEntity().getContent();
txt1.setText("parsing CSV...");
BufferedReader reader = new BufferedReader(new
InputStreamReader(in));
try {
String line;
reader.readLine(); //IGNORE FIRST LINE
while ((line = reader.readLine()) != null) {
String[] RowData = line.split(",");
sr = new SearchResults();
String precent =
String.format("%.2g%n",Double.parseDouble(RowData[12])).trim();
double chng=Double.parseDouble(RowData[11]);
String c;
if(chng > 0){
sr.setLine2Color(Color.GREEN);
c="▲";
}else if(chng < 0){
sr.setLine2Color(Color.rgb(255, 0, 14));
c="▼";
}else{
sr.setLine2Color(Color.rgb(2, 159, 223));
c="-";
}
sr.setName(c+RowData[2]+"-"+RowData[1]);
DecimalFormat fmt = new
DecimalFormat("###,###,###,###.##");
String price =
fmt.format(Double.parseDouble(RowData[6])).trim();
String tradevol =
fmt.format(Double.parseDouble(RowData[8])).trim();
sr.setLine1("PRICE: Rs."+price+" TRADE VOL:"+tradevol);
sr.setLine2("CHANGE:"+c+RowData[11]+" ("+precent+"%)");
results.add(sr);
txt1.setText("Loaded...");
// do something with "data" and "value"
}
}
catch (IOException ex) {
Log.i("Error:IO",ex.getMessage());
}
finally {
try {
in.close();
}
catch (IOException e) {
Log.i("Error:Close",e.getMessage());
}
}
}catch(Exception e){
Log.i("Error:",e.getMessage());
new AlertDialog.Builder(cseWatch.this).setTitle("Watch
out!").setMessage(e.getMessage()).setNeutralButton("Close", null).show();
}
return results;
}
}
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