Android 如何解决BLE中客户端连接状态()错误-status=22 clientIf=7
我有一个Android应用程序,用于连接我的手机的蓝牙低能量(BLE)。该应用程序在Galaxy S5(Android 5.0.1)、Galaxy S6(Android 6.0)等手机上运行良好。然而,GalaxyNote3(Android 5.0.1)中有一个关键问题 当我调用Android 如何解决BLE中客户端连接状态()错误-status=22 clientIf=7,android,bluetooth,bluetooth-lowenergy,android-5.0-lollipop,Android,Bluetooth,Bluetooth Lowenergy,Android 5.0 Lollipop,我有一个Android应用程序,用于连接我的手机的蓝牙低能量(BLE)。该应用程序在Galaxy S5(Android 5.0.1)、Galaxy S6(Android 6.0)等手机上运行良好。然而,GalaxyNote3(Android 5.0.1)中有一个关键问题 当我调用connect()函数,然后调用readCharacteristic()时,它返回错误: onClientConnectionState()-status=22 clientIf=7 在我调用connect函数约2秒钟后
connect()
函数,然后调用readCharacteristic()
时,它返回错误:
onClientConnectionState()-status=22 clientIf=7
在我调用connect
函数约2秒钟后发生错误。我查找了一些解决方案,例如在调用readCharacteristic()
之前进行延迟,但它无法解决问题
你有什么办法解决我的问题吗
谢谢大家
这是我的代码:
private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
if (newState == BluetoothProfile.STATE_CONNECTED) {
mBluetoothGatt.discoverServices();
} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {}
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
try {
Thread.sleep(500);
readCharacteristic();
} catch (InterruptedException e) {
e.printStackTrace();
}
} else {
Log.w(TAG, "onServicesDiscovered received: " + status);
}
}
@Override
public void onCharacteristicRead(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic,
int status) {
}
@Override
public void onCharacteristicChanged(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic) {
}
};
public void readCharacteristic() {
/*check if the service is available on the device*/
BluetoothGattService mCustomService = mBluetoothGatt.getService(UUID.fromString("00001c00-d102-11e1-9b23-00025b00123"));
/*get the read characteristic from the service*/
BluetoothGattCharacteristic mReadCharacteristic = mCustomService.getCharacteristic(UUID.fromString("00001233-d102-11e1-9b23-00025b00a5a5"));
mBluetoothGatt.setCharacteristicNotification(mReadCharacteristic, true);
BluetoothGattDescriptor descriptor = mReadCharacteristic.getDescriptor(
UUID.fromString(SampleGattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
mBluetoothGatt.writeDescriptor(descriptor);
}
这是我连接BLE的完整服务功能文件
public class ConnectionService extends Service{
private BluetoothLeService mBluetoothLeService;
public String mDeviceAddress="0A:1B:6C:22:11:3D";
private ServiceMonitor serviceMonitor = ServiceMonitor.getInstance();
private final ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder service) {
mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService();
if (!mBluetoothLeService.initialize()) {
Log.e(TAG, "Unable to initialize Bluetooth");
}
mBluetoothLeService.connect(mDeviceAddress);
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
mBluetoothLeService = null;
}
};
@Override
public void onCreate() {
super.onCreate();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
if(mGattUpdateReceiver!=null) {
unregisterReceiver(mGattUpdateReceiver);
}
if(mServiceConnection!=null) {
unbindService(mServiceConnection);
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
//If some device is connecting to phone, let disconnect
if(mConnected==true) {
mBluetoothLeService.disconnect();
}
//If bluetooth is enable
if (BleUtils.getBluetoothAdapter(getApplicationContext()).enable()) {
Intent gattServiceIntent = new Intent(this, BluetoothLeService.class);
bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE);
registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());
//Try to reconnect if the connect is not successful
if (mBluetoothLeService != null) {
new CountDownTimer(3000,1000) {
public void onTick(long millisUntilFinished) {}
public void onFinish() {
final boolean result = mBluetoothLeService.connect(mDeviceAddress);
Log.d(TAG, "Connect request result=" + result);
}
}.start();
}
}
return START_STICKY;
}
connectGatt()
方法有不同的参数,它不同于API版本。这是kotlin代码。我在任何地方都看不到您的connect方法,但我知道您必须在某个地方调用connectGatt()
Build.VERSION.SDK_INT >= Build.VERSION_CODES.M -> bluetoothDevice?.connectGatt(applicationContext, true, mGattCallback, BluetoothDevice.TRANSPORT_LE)
else -> bluetoothDevice?.connectGatt(applicationContext, false, mGattCallback)
您是从UI线程还是工作线程调用connect()方法?我在服务中调用connect函数。它在几乎所有设备上都能正常工作,除了一些设备,例如注3。如果可能的话,您可以发布服务类的代码。是的。等等我。我会成功的now@PravinD:让我看看我的更新。类
BluetoothLeService.java
来自google示例代码