CWEventType.linkQualityDidChange Posts when the RSSI or transmit rate for any Wi-Fi interface changes. Declarationcase linkQualityDidChange See AlsoConstantsCWEventType.noneCWEventType.powerDidChangeCWEventType.ssidDidChangeCWEventType.bssidDidChangeCWEventType.countryCodeDidChangeCWEventType.linkDidChangeCWEventType.modeDidChangeCWEventType.scanCacheUpdatedCWEventType.unknown