the callback using BLE bluetoothgattcallback is slow, mainly because the callback is slow for about 15 seconds when the device is disconnected
1. Use connectGatt (context, false, gattCallback) to connect Bluetooth
2. When the Bluetooth device is powered off, it takes a long time to detect;
has any warrior ever encountered it? Ask for advice!
it will take me about 20 seconds. Have you solved it
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there is a code like this package com.pmi.reader.data.battery_info; import android.annotation.TargetApi; import android.bluetooth.BluetoothGattCharacteristic; import android.util.Log; import com.pmi.reader.data.CharacteristicData; import com.pmi.reade...