Android BLE API：多個通知

根據谷歌BLE示例代碼，我設計了一個android應用程序，它需要連接另一個BLE設備（TI CC2640設備），該協議有兩個UUID，所以在SampleGattAttributes.java中我添加了是這樣的：在BluetoothLeService.javaAndroid BLE API：多個通知

public static String UBI_ONGOING_INFO_SERVICE_UUID = "3d963d11-d107-4d7d-918f-61ca2aa836af"; 

public static String UBI_SYSTEM_INFO_SERVICE_UUID = "3d963d13-d107-4d7d-918f-61ca2aa836af";

現在我需要讀/寫特性：

public final static String EXTRA_DATA_ONGOING = 
     "com.example.bluetooth.le.EXTRA_DATA_ONGOING"; 

public final static String EXTRA_DATA_SYSTEM_INFO = 
     "com.example.bluetooth.le.EXTRA_DATA_SYSTEM_INFO"; 

public final static UUID UUID_UBI_ONGOING_INFO_SERVICE_UUID = 
     UUID.fromString(SampleGattAttributes.UBI_ONGOING_INFO_SERVICE_UUID); 

public final static UUID UUID_UBI_SYSTEM_INFO_SERVICE_UUID = 
     UUID.fromString(SampleGattAttributes.UBI_SYSTEM_INFO_SERVICE_UUID); 

private void broadcastUpdate(final String action,final BluetoothGattCharacteristic characteristic){ 
... 
... 
if (UUID_UBI_SYSTEM_INFO_SERVICE_UUID.equals(characteristic.getUuid())){ 
    final byte[] data1 = characteristic.getValue(); 
    .... 
    .... 
    intent.putExtra(EXTRA_DATA, stringBuilder.toString()); 
    intent.putExtra(EXTRA_DATA_SYSTEM_INFO, strBuilder.toString()); 
}else{ 
    ... 
    ... 
    intent.putExtra(EXTRA_DATA, stringBuilder.toString()); 
    intent.putExtra(EXTRA_DATA_ONGOING, strBuilder.toString()); 
} 


public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic,boolean enabled) { 
    mBluetoothGatt.setCharacteristicNotification(characteristic, enabled); 

    if (UUID_UBI_SERVICE_SERVICE_UUID.equals(characteristic.getUuid())) { 
     BluetoothGattDescriptor descriptor = characteristic.getDescriptor(UUID.fromString(00002902-0000-1000-8000-00805f9b34fb)); 
     descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE); 
     mBluetoothGatt.writeDescriptor(descriptor); 
    } 

if (UUID_UBI_SYSTEM_INFO_SERVICE_UUID.equals(characteristic.getUuid())){ 
    BluetoothGattDescriptor descriptor1 = characteristic.getDescriptor(00002902-0000-1000-8000-00805f9b34fb); 
    descriptor1.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE); 
    mBluetoothGatt.writeDescriptor(descriptor1); 
}

那麼，我只能收到通知的第一特徵。如何從DeviceControlActivity.java接收來自兩個特性的通知並顯示數據？

我在這裏呆了很久，希望有人能幫助我，謝謝。

其實我不需要修改broadcastUpdate函數，原因 EXTRA_DATA應該在DeviceControlActivity中進行處理。

來源

2017-06-05 leona lin

是否確定要等到onDescriptorWrite回調被調用，然後再啓用第二個特性的通知之前？您一次只能有一項傑出的操作。 – Emil

其實我不等。我不添加任何延遲功能。 –

您需要等待回調。否則它將無法工作。 – Emil

@Emil，像這樣：

if (UUID_UBI_SERVICE_SERVICE_UUID.equals(characteristic.getUuid())) { 
    BluetoothGattDescriptor descriptor = characteristic.getDescriptor(UUID.fromString(00002902-0000-1000-8000-00805f9b34fb)); 
    descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE); 
    mBluetoothGatt.writeDescriptor(descriptor); 
//add sleep delay 500 
try { 
    Thread.sleep(500); 
}catch (InterruptedException e) { 
    e.printStackTrace(); 
} 

if (UUID_UBI_SYSTEM_INFO_SERVICE_UUID.equals(characteristic.getUuid())){ 
    BluetoothGattDescriptor descriptor1 = characteristic.getDescriptor(00002902-0000-1000-8000-00805f9b34fb); 
    descriptor1.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE); 
    mBluetoothGatt.writeDescriptor(descriptor1); 
}

我的錯誤，我不應該修改通知功能。

來源

2017-06-05 10:06:08

Android BLE API：多個通知

回答

相關問題