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client.updateInterval = 0.1; // set to 0 to turn off. | client.updateInterval = 0.1; // set to 0 to turn off. | ||
[interface updateSettings]; | [interface updateSettings]; | ||
</source> | |||
To obtain the current orientation, listen to the <tt>com.apple.springboard.rawOrientation</tt> Darwin notification and use the code below to obtain the orientation: | |||
<source lang="c"> | |||
int token; | |||
uint64_t state; | |||
notify_register_check("com.apple.springboard.rawOrientation", &token); | |||
notify_get_state(token, &state); | |||
notify_cancel(token); | |||
UIDeviceOrientation orientation = state; | |||
</source> | </source> | ||
== References == | == References == | ||
{{IPFHeader|SpringBoard|.app}} | {{IPFHeader|SpringBoard|.app}} | ||
Revision as of 07:22, 17 November 2009
SBAccelerometerInterface is a singleton class that can deliver accelerometer events to registered clients.
Turn on accelerometer events within SpringBoard
When the SpringBoard is visible (i.e. the active display stack is empty), the accelerometer will be turned off entirely. The following code can force accelerometer events to be reported even when there is no running apps:
SBAccelerometerInterface* interface = [objc_getClass("SBAccelerometerInterface") sharedInstance];
SBAccelerometerClient* client = [[interface valueForKey:@"clients"] lastObject];
client.updateInterval = 0.1; // set to 0 to turn off.
[interface updateSettings];
To obtain the current orientation, listen to the com.apple.springboard.rawOrientation Darwin notification and use the code below to obtain the orientation:
int token;
uint64_t state;
notify_register_check("com.apple.springboard.rawOrientation", &token);
notify_get_state(token, &state);
notify_cancel(token);
UIDeviceOrientation orientation = state;
References