/**
* @param context TalkBackService whose {@code performCustomGesture} will be called when taps are
* detected
*/
public SideTapManager(MyAccessibilityService context, GestureController gestureController) {
if (gestureController == null) throw new IllegalStateException();
mContext = context;
mIntegratedTapDetector =
new IntegratedTapDetector(
(SensorManager) mContext.getSystemService(Context.SENSOR_SERVICE));
mIntegratedTapDetector.addListener(this);
mIntegratedTapDetector.setPostDelayTimeMillis(
MIN_TIME_BETWEEN_TOUCH_AND_TAP_NANOS / MILIS_PER_NANO);
mGestureController = gestureController;
}
@Override
public void onReceive(Context context, Intent intent) {
if (!MyAccessibilityService.isServiceActive()) {
return;
}
String action = intent.getAction();
if (action.equals(Intent.ACTION_SCREEN_ON)) {
onReloadPreferences();
}
if (action.equals(Intent.ACTION_SCREEN_OFF)) {
mIntegratedTapDetector.stop();
}
}
/** Enables tap detection if appropriate based on preferences. */
public void onReloadPreferences() {
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(mContext);
boolean enableTapDetection = false;
if (!settings
.getString(
mContext.getString(R.string.pref_shortcut_single_tap_key),
mContext.getString(R.string.pref_shortcut_single_tap_default))
.equals(mContext.getString(R.string.shortcut_value_unassigned))) {
/* Single tap is assigned */
enableTapDetection = true;
}
if (!settings
.getString(
mContext.getString(R.string.pref_shortcut_double_tap_key),
mContext.getString(R.string.pref_shortcut_double_tap_default))
.equals(mContext.getString(R.string.shortcut_value_unassigned))) {
/* Double tap is assigned */
enableTapDetection = true;
mIntegratedTapDetector.setMaxDoubleTapSpacingNanos(DOUBLE_TAP_SPACING_NANOS);
} else {
mIntegratedTapDetector.setMaxDoubleTapSpacingNanos(0);
}
/* The setting is 'sensitivity', which is the opposite of the detector's 'quality' */
if (settings
.getString(
mContext.getString(R.string.pref_tap_sensitivity_key),
mContext.getString(R.string.pref_tap_sensitivity_default))
.equals(mContext.getString(R.string.tap_sensitivity_value_lowest))) {
mIntegratedTapDetector.setTapDetectionQuality(IntegratedTapDetector.TAP_QUALITY_HIGHEST);
}
if (settings
.getString(
mContext.getString(R.string.pref_tap_sensitivity_key),
mContext.getString(R.string.pref_tap_sensitivity_default))
.equals(mContext.getString(R.string.tap_sensitivity_value_low))) {
mIntegratedTapDetector.setTapDetectionQuality(IntegratedTapDetector.TAP_QUALITY_HIGH);
}
if (settings
.getString(
mContext.getString(R.string.pref_tap_sensitivity_key),
mContext.getString(R.string.pref_tap_sensitivity_default))
.equals(mContext.getString(R.string.tap_sensitivity_value_medium))) {
mIntegratedTapDetector.setTapDetectionQuality(IntegratedTapDetector.TAP_QUALITY_MEDIUM);
}
if (settings
.getString(
mContext.getString(R.string.pref_tap_sensitivity_key),
mContext.getString(R.string.pref_tap_sensitivity_default))
.equals(mContext.getString(R.string.tap_sensitivity_value_high))) {
mIntegratedTapDetector.setTapDetectionQuality(IntegratedTapDetector.TAP_QUALITY_LOW);
}
/* Second tap of double taps can be low quality */
mIntegratedTapDetector.setDoubleTapDetectionQuality(IntegratedTapDetector.TAP_QUALITY_LOW);
if (enableTapDetection) {
mIntegratedTapDetector.start();
} else {
mIntegratedTapDetector.stop();
}
}
/** Stops tap detection. */
public void onSuspendInfrastructure() {
mIntegratedTapDetector.stop();
}