连接到 ble 设备时是否可以启动服务/活动？

Question

I am develop a android application with BLE.

My bluetooth device can be searched by bluetooth scanning of android.

And my application can connect with the bluetooth device by connectGatt()

When my application is running(even there's only foreground service running), the connection is continue. (I use autoConnect=true )

But even if my application is not running, I hope Android OS will try to connect if it finds my Bluetooth device and start foreground service or activity of my application.

is that possible?

In the window of bluetooth device list found by Android OS, I can find my bluetooth device. But if i touch it, they say "an app is needed to use this device" right now.

Please tell me how to let Android OS try to connect with my bluetooth device even if my application is running or not.

Answer 1

No, Android will not start an application (a new process) due to a BLE connection has been established. A connectGatt attempt is only valid as long as the app process runs.

You can however scan for devices without the app running, see https://developer.android.com/reference/android/bluetooth/le/BluetoothLeScanner#startScan(java.util.List%3Candroid.bluetooth.le.ScanFilter%3E,%20android.bluetooth.le.ScanSettings,%20android.app.PendingIntent) .