Your code, as far as I can tell, runs inside onCreate. Android UI framework
is designed so that it expects callbacks like onCreate and others to return
control to Android within a reasonable amount of time.
Your code prevents Android from doing things in the UI, including showing
toasts (or dialogs), because it ties up the UI thread with your work
function.
Study Application fundamentals in the SDK documentation, specifically
information about threads, it does a good job at explaining this.
To run networking code, create a background thread. An easy way to do it is
to use AsyncTask, a generic class provided by the Android framework.
09.04.2011 20:06 пользователь "ABSOLUT" <davidt...@gmail.com> написал:
> I dont understand what do you say Kostya
> I've installed the app in the devices but the Toast doesnt shows.
> The complete Oncreate is:
>
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
> Log.d("PRUEBA", "COMENZAMOS EL PROGRAMA");
>
> // Toast.makeText(ssh.this, "aaaaaaaaaaaa",
> Toast.LENGTH_SHORT).show();
>
> InetAddress pp;
> InetAddress direccionMaquinon;
>
> if (pruebaPing("221.221.221.2")){
> Log.d("PRUEBA","No llega despues de comprobar el primer ping.
> Hay que mandar paquete");
> Toast.makeText(this, "aaaaaaaaaaaa",
> Toast.LENGTH_SHORT).show();
>
> wakeonLan();
> Toast.makeText(this, "aaaaaaaaaaaa",
> Toast.LENGTH_SHORT).show();
> mandarSsh();
> }else{
> Log.d("PRUEBA","siiiiiiiiiiiiiiiilllega");
> mandarSsh();
> }
> }
> public void wakeonLan (){
>
>
> try {
> Toast.makeText(this, "Nsdfsdfdsfd paquete magico en...",
> Toast.LENGTH_LONG).show();
>
>
> final int PORT = 9;
> String ipStr = "221.xxxxx
> ...............
> ...............
>
>
>
> On 9 abr, 17:24, Kostya Vasilyev <kmans...@gmail.com> wrote:
>> The toast will only show after your code returns from onCreate, which it
>> should.
>> 09.04.2011 19:01 пользователь "ABSOLUT" <davidt...@gmail.com> написал:
>>
>> > Hi again,
>> > I can't understand nothing.
>> > I'm trying to execute a simple toast when the activity create but
>> > doenn't show anything:
>>
>> > code:
>>
>> > public class ssh extends Activity {
>> > /** Called when the activity is first created. */
>> > public static final int PORT = 9;
>>
>> > @Override
>> > public void onCreate(Bundle savedInstanceState) {
>> > super.onCreate(savedInstanceState);
>> > setContentView(R.layout.main);
>> > Log.d("PRUEBA", "COMENZAMOS EL PROGRAMA");
>>
>> > Toast.makeText(ssh.this, "aaaaaaaaaaaa",
>> > Toast.LENGTH_SHORT).show();
>> > ...............
>> > ....................
>>
>> > On 9 abr, 12:26, Kostya Vasilyev <kmans...@gmail.com> wrote:
>> >> OK. Try calling Toast from the UI thread. You can use Handler for
this.
>> >> 09.04.2011 14:10 пользователь "ABSOLUT" <davidt...@gmail.com> написал:
>>
>> >> > Yes I'm sure.
>>
>> >> > I have:
>>
>> >> > public void wakeonLan (){
>> >> > ..................................
>> >> > ....................................
>> >> > while (pruebaPing(maquina)){
>> >> > //MIENTR=AS NO RESPONDA A PING. DORMIMOS 6 SEGUNDOS EL
>> >> > PROCESO
>>
>> >> > Thread.sleep(6000);
>> >> > contadorDormido=contadorDormido+6;
>> >> > Log.d("PRUEBA", "No responde a ping despues de mandar el
>> >> > paquete magico en..." + contadorDormido);
>> >> > Toast.makeText(getApplicationContext(), "No responde a
>> >> > ping despues de mandar el paquete magico en..." + contadorDormido,
>> >> > Toast.LENGTH_SHORT).show();
>> >> > Toast.makeText(this, "No esponde a ping despues de
>> >> > mandar el paquete magico en..." + contadorDormido,
>> >> > Toast.LENGTH_SHORT).show();
>> >> > Toast.makeText(ssh.this.getApplicationContext(), "No
>> >> > responde a ping despues de mandar el paquete magico en..." +
>> >> > contadorDormido, Toast.LENGTH_SHORT).show();
>> >> > ....................................
>>
>> >> > And I can see the logcat
>>
>> >> > Please any help?
>> >> > Many thanks
>>
>> >> > On 9 abr, 11:49, Kostya Vasilyev <kmans...@gmail.com> wrote:
>> >> >> Are you sure this code actually runs, and calls Toast? Add logcat
>> >> printouts
>> >> >> just before Toast to make sure.
>> >> >> 09.04.2011 13:13 пользователь "David Tabernero" <
davidt...@gmail.com>
>> >> >> написал:
>>
>> >> >> > Hi,
>>
>> >> >> > I can't display Toast in my application:
>>
>> >> >> > I have this code but nothing happens. Any help please?
>>
>> >> >> > Many thanks and sorry for my english!
>>
>> >> >> > ....................
>> >> >> > ....................
>> >> >> > public void wakeonLan (){
>>
>> >> >> > try {
>> >> >> > while (pruebaPing(maquina)){
>> >> >> > Toast.makeText(ssh.this, "No responde a ping despues de
>> >> >> > mandar el paquete magico en..." + contadorDormido,
>> >> >> > Toast.LENGTH_SHORT).show();
>> >> >> > Toast.makeText(getApplicationContext(), "No responde a ping
>> >> >> > despues de mandar el paquete magico en..." + contadorDormido,
>> >> >> > Toast.LENGTH_SHORT).show();
>> >> >> > ................
>> >> >> > .................
>>
>> >> >> > --
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