根据蓝牙4.0 BLE标准，BLE广告必须至少提供其中一项：本地名称、服务UUID、制造商数据或服务数据。因此，不一定需要提供非空本地名称。

在Android中，可以通过以下方式设置BLE广告：

AdvertiseData.Builder dataBuilder = new AdvertiseData.Builder();
dataBuilder.addServiceUuid(uuid);
dataBuilder.setManufacturerData(manufacturerId, manufacturerData, manufacturerDataMask);
dataBuilder.setIncludeTxPowerLevel(false);
dataBuilder.setConnectable(false);
AdvertiseData data = dataBuilder.build();

AdvertiseSettings.Builder settingsBuilder = new AdvertiseSettings.Builder();
settingsBuilder.setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_LOW_LATENCY);
settingsBuilder.setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_HIGH);
settingsBuilder.setConnectable(false);
AdvertiseSettings settings = settingsBuilder.build();

bluetoothLeAdvertiser.startAdvertising(settings, data, advertisingCallback);