why doesn't Display.getDisplay(this).vibrate(milis) work on E65?

[ronikoren]

the statement Display.getDisplay(this).vibrate(milis)
does not cause my E65 to vibrate.
it vibrates fine when a call comes in.
i tried the same midlet on 6320 and it vibrates fine.
any ideas why the E65 cannot be programmed to vibrate?
do i have to mess with the settings?
thanks
rk

[r2j7]

Hello rk,

according to MIDP 2.0 spec:

"vibrate(int)
..
The device MAY limit or override the duration. For devices that do not include a controllable vibrator, calls to this method return false. .."

I'm not sure if this is the case with E65. Could you implement a test MIDlet to return the boolen value to the screen, something like:

boolean value;
Form f;

value = Display.getDisplay(this).vibrate(milis);

if(!value)
{
f.append("False=no vibra support available for E65.");
}
else
f.append("True");

Regards,
r2j7

[ronikoren]

hi r2j7,
thanks for the info.
the E65 returns false. i also tried the test on 6230 (sys 40)
which does vibrate and the method indeed returns true for it.
so is there a way to hack the E65 phone into supporting
programmatic vibration? some *# command perhaps...?
thanks
rk

[raj_J2ME]

Hey,

Please read this text carefully..
public boolean vibrate(int duration)

Requests operation of the device's vibrator. The vibrator is intended to be used to attract the user's attention or as a special effect for games. The return value indicates if the vibrator can be controlled by the application.

This method switches on the vibrator for the requested duration, or switches it off if the requested duration is zero. If this method is called while the vibrator is still activated from a previous call, the request is interpreted as setting a new duration. It is not interpreted as adding additional time to the original request. This method returns immediately; that is, it must not block the caller while the vibrator is running.

Calls to this method are honored only if the Display is in the foreground. This method MUST perform no action and return false if the Display is in the background.

The device MAY limit or override the duration. For devices that do not include a controllable vibrator, calls to this method return false.

Parameters:
duration - the number of milliseconds the vibrator should be run, or zero if the vibrator should be turned off
Returns:
true if the vibrator can be controlled by the application and this display is in the foreground, false otherwise
Throws:
IllegalArgumentException - if duration is negative



You can check for the given time in millis by you.Or the things those are written here.

Hope this can help you.
Thanks