Android: Comporre un numero di telefono

import android.app.Activity;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.LinearLayout;

public class DialANumber extends Activity {

      EditText mEditText_number = null;

      LinearLayout mLinearLayout_no_button = null;

      Button mButton_dial = null;

     

      @Override

      public void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            mLinearLayout_no_button = new LinearLayout(this);

           

            mEditText_number = new EditText(this);

            mEditText_number.setText("5551222");

            mLinearLayout_no_button.addView(mEditText_number);

            mButton_dial = new Button(this);

            mButton_dial.setText("Dial!");

            mLinearLayout_no_button.addView(mButton_dial);

            mButton_dial.setOnClickListener(new View.OnClickListener() {

                  public void onClick(View v) {

                             performDial();

                  }

            });

           

            setContentView(mLinearLayout_no_button);

      }

     

      public boolean onKeyDown(int keyCode, KeyEvent event) {

            if (keyCode == KeyEvent.KEYCODE_CALL) {

                  performDial();

                  return true;

            }

            return false;

      }

     

      public void performDial(){

            if(mEditText_number!=null){

                  try {

                        startActivity(new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + mEditText_number.getText())));

                  }

                  catch (Exception e)

                  {

                        e.printStackTrace();

                  }

            }

      }

} 

Android: Caricare un'immagine dal web

public Bitmap getRemoteImage(final URL aURL) {

      try {

            final URLConnection conn = aURL.openConnection();

            conn.connect();

            final BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());

            final Bitmap bm = BitmapFactory.decodeStream(bis);

            bis.close();

            return bm;

      } catch (IOException e) {

            [...]

      }

      return null;

}

Ordinamento di una DataTable

Effettuare l'ordinamento di una DataTable è molto semplice:

[VB.Net]

dt.DefaultView.Sort = "NomeColonna"  'DataTable normale 

ds.Tables("NomeTabella").DefaultView.Sort = "NomeColonna"  'DataTable in DataSet

[C#]

dt.DefaultView.Sort = "NomeColonna"  'DataTable normale 

ds.Tables["NomeTabella"].DefaultView.Sort = "NomeColonna"  'DataTable in DataSet

In realtà, in questo modo non si ordina "fisicamente" il contenuto della DataTable bensì la sua vista predefinita. A livello di visualizzazione dati, però, il risultato è lo stesso.

Usando la nostra DataTable, per esempio, come datasource di una GridView l'elenco sarà ordinato in base al criterio utilizzato.

UpdateProgress centrato dinamicamente

<script language="JavaScript" type="text/javascript">

        function adjustDivs() {           

            interno = document.getElementById('divCalcolaInterno');

            esterno = document.getElementById('divCalcola');

            dfs = interno.style;

           

            dfs.left = (esterno.innerWidth - interno.offsetWidth) / 2;

        }

        window.onload = adjustDivs;

        window.onresize = adjustDivs;

        window.onscroll = adjustDivs;

<script>

<asp:UpdatePanel ID="updXXX" runat="server">

<ContentTemplate>

       […]

<ContentTemplate>

<asp:UpdatePanel>

<asp:UpdateProgress ID="updprogXXX" runat="server" AssociatedUpdatePanelID="updXXX" DisplayAfter="150">

<ProgressTemplate>

             <div id="divCalcola" align="center" style="top: 200px; position: absolute; top:0; bottom:0; right:0; left:0;background-color:rgba(0,0,0,0.5)">

                    <div id="divCalcolaInterno" align="center" style="border: solid 1px #000000; background: #FFFFFF;padding: 5px; width: 320px; height: 50px;margin-top:300px">

                        <asp:Label runat="server" ID="lblLoading2" Text="Calcolo del fatturato in corso..."><asp:Label>

                        <asp:Image ID="imgLoading2" runat="server" ImageAlign="left" SkinID="imgLoadingBar" /><br /><br />

                        <asp:Label runat="server" ID="lblLoadingInfo" Text="Questa operazione potrebbe durare diversi minuti" Font-Size="X-Small" >asp:Label>

                    <div>

                <div>               

        <ProgressTemplate>

<asp:UpdateProgress>