Screen Saver using J2ME

[comando_c]

Hi

I developed a screen saver. I have few queries,

1. Can I invoke the screen saver when the phone is not in use????

2. Can I stop it when the user gets a call/presses any button????
{using canvas i can invoke keypressed(), but it gives an securyexception.}
3. can i play sound when the screensaver is playing????

please help

[doctordwarf]

comando_c
1. Can I invoke the screen saver when the phone is not in use????
No, unless you use some non J2ME service. For example, some Series 60 programs seem to be able launch defined programs on phone start. Some might be able to start your program, when phone is not in use.

2. Can I stop it when the user gets a call/presses any button????
{using canvas i can invoke keypressed(), but it gives an securyexception.}

Hmm, all the games use keyPressed without any problem. What do you mean by calling it? System will call this method, when user presses key

3. can i play sound when the screensaver is playing????
Depends on the phone, whether it allows playing sound from Java.

P.S.
I personally consider an idea of having power consuming screensaver on a mobile pretty strage..
Java VM and MIDlet code should eat quite much power

[raghda]

hi,
i have exactly this problem of invoking the screen saver when the phone is not in use.but i did not understand the reply

comando_c
Can I invoke the screen saver when the phone is not in use????[/i]
No, unless you use some non J2ME service. For example, some Series 60 programs seem to be able launch defined programs on phone start. Some might be able to start your program, when phone is not in use.

what do you mean by "Series 60 programs" that can start the midlet when the phone is not in use

Thanks

[alb3530]

hi,
i have exactly this problem of invoking the screen saver when the phone is not in use.but i did not understand the reply



what do you mean by "Series 60 programs" that can start the midlet when the phone is not in use

Thanks

he meant if target phone is a S60 device, you can create a program in Symbian C++ to launch the midlet.In other words, it would be the Symbian application that would start the midlet when timeout is reached.It's not possible using java only


anyway, if you chose doing it, you could consider developing the whole application in Symbian C++, cause your application would be much faster


Best regards