如何使读写特性都好? [英] How to make a characteristic both read and write?

问题描述

我了解，特征只能具有一个属性和一个许可，并且该属性必须具有与许可相同的值，例如如果特征被允许写入，则特征必须具有可写的属性.那么，如何使特征可读和可写?

I understand that a characteristic can have only one property and one permission, and that the property must have the same value as the permission e.g. a characteristic must have the property of being writable if it has permission to be written to... so how can I make a characteristic readable AND writable?

例如

如何打开它

int permission = BluetoothGattCharacteristic.PERMISSION_WRITE;
int property = BluetoothGattCharacteristic.PROPERTY_WRITE;

进入阅读和写作

推荐答案

使用遮罩

int permission = BluetoothGattCharacteristic.PERMISSION_WRITE | BluetoothGattCharacteristic.PERMISSION_READ;
int property = BluetoothGattCharacteristic.PROPERTY_WRITE|BluetoothGattCharacteristic.PROPERTY_READ;

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