Question

好的所以我已经找到了我的问题，我现在遇到一个新问题，因为我正在刷卡并更改其值，因此我的服务类中搜索栏的值不会改变。

主要活动

    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final TextView seekBarValue = findViewById(R.id.seekBar2);
    seekbar= findViewById(R.id.seekBar1);
    seekbar.setMax(20);

//我添加了意图

      Intent serviceIntent = new Intent(this,BleServer.class);
      serviceIntent.putExtra("seekbar",seekbar.getProgress());
      this.startService(serviceIntent);


    seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

        public int progressChangedValue = 0;
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            progressChangedValue = progress;
            seekBarValue.setText(String.valueOf(progress));
            Log.i(TAG, "SeekBar Value: " + progress);

        }

        public void onStartTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub
        }

        public void onStopTrackingTouch(SeekBar seekBar) {
            Toast.makeText(MainActivity.this, "Seek bar progress is :" + progressChangedValue,
                    Toast.LENGTH_SHORT).show();
        }

    });

服务活动

//我添加了onStartCommand

public int onStartCommand(Intent intent, int flags, int startId) {

    Integer seekvalue = intent.getIntExtra("seekbar", 0);
    Log.i(TAG, "What is the Brightness Value: " + seekvalue );
    //Toast.makeText(this,userID, Toast.LENGTH_LONG).show();
    return START_STICKY;

}

    MainActivity mainActivity = new MainActivity();
    public void startServer() {
    goForeground1();
    Log.d(TAG, "Service: Starting Server");
    mGattServer = mBluetoothManager.openGattServer(this, mGattServerCallback);
    if (mGattServer == null) {
        Log.w(TAG, "Unable to create GATT server");
        return;
    }

    BluetoothGattService service = new BluetoothGattService(SERVICE_UUID, BluetoothGattService.SERVICE_TYPE_PRIMARY);
    BluetoothGattCharacteristic writeReadCharacteristic = new BluetoothGattCharacteristic(
            desiredDimness, BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_WRITE,BluetoothGattCharacteristic.PERMISSION_READ|BluetoothGattCharacteristic.PERMISSION_WRITE);
    writeReadCharacteristic.setValue(write);
    service.addCharacteristic(writeReadCharacteristic);
    mGattServer.addService(service);
}

所以现在我有一个来自onStartCommand的值，但我无法将该值设置为onStartCommand方法之外的特性，并且该值不会随着我更改搜索条而改变。

蓝牙低能量从A类到服务B类特征寻求条形值

0 个答案: