question: public static void addTriggerToLayoutActiveTriggers ( GoosciSensorLayout . SensorLayout layout , String triggerId ) { int oldSize = layout . activeSensorTriggerIds . length ; for ( int i = 0 ; i < oldSize ; i ++ ) { if ( TextUtils . equals ( layout . activeSensorTriggerIds [ i ] , triggerId ) ) { return ; } } String [ ] newTriggerIds = new String [ oldSize + 1 ] ; System . arraycopy ( layout . activeSensorTriggerIds , 0 , newTriggerIds , 0 , layout . activeSensorTriggerIds . length ) ; newTriggerIds [ oldSize ] = triggerId ; layout . activeSensorTriggerIds = newTriggerIds ; }
target:  Adds the trigger ID to the layout's active triggers if it is not already in the list.