Android BLE - 双“配对请求”对话框/弹出窗口 - 第一次尝试导致连接失败

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【中文标题】Android BLE - 双“配对请求”对话框/弹出窗口 - 第一次尝试导致连接失败【英文标题】：Android BLE - Double 'Pairing Request' Dialog / Popup - Causing Failed Connection On 1st Try 【发布时间】：2020-10-12 18:58:22 【问题描述】： 我正在进一步开发一个 android 应用程序，作为我们公司为我们的某些产品生产的这些遥控器/FOB 的无线固件更新程序。这些 FOB 可以通过蓝牙连接到我们的应用程序，这使我们能够根据需要更新固件。我将为以下场景附上 Logcat 的副本：当我成功连接到先前连接的 FOB 时，以及当我第一次无法连接到 NEW FOB 时。我可以在这里添加一些代码，但这是一个大文件，不知道是否有人想通过800行代码。

我们遇到了以下问题，并且已经工作了几天试图查明问题（注意，不是原始应用设计者，但我们正在梳理代码以试图解决问题）：

案例 1：

如果我们之前有通过App连接过的FOB，可以将FOB设置为配对模式，打开APP，搜索我们的FOB，点击ID连接，连接成功，开始加载最新的固件文件。

案例 2：

假设我们需要打开一盒从制造商处收到的 FOB，并更新他们的固件。这些 FOB 之前未连接到此应用程序，但仍应连接相同。我们将 FOB 置于配对模式，打开应用程序，选择要连接的 FOB ID - 这次我们会看到两个配对对话框。选择 FOB 后，Android 会询问“您要与此设备配对吗？”然后我们选择“配对”。接下来，我们会看到另一个对话框，要求我们配对，这次是输入 PIN 码。每次我们在连接时出现这两个对话框时，BluetoothGatt 服务都会超时并在 Logcat 中报告“与服务断开连接”。HOWEVER, the strange part is - after this fail we can close & reopen the app and it connects perfectly with no issues whatsoever...

我们已经确定这个问题是主要活动进入后台的结果，好吧 - 在 Logcat 中，我们配对并输入 PIN 后，我们可以看到获得了 BLE 特征，我们得到 'Connected to远程服务”，然后是“输入通道被破坏”，然后是“应用程序进入后台”，然后再经过几行，它运行一个方法来“销毁BluetoothGatt”，然后是“不活动，与服务断开连接”。 这一切都发生得很快，我没有足够的 Java 技能来理解我应该如何解决这个问题。

LOGCAT FOR SUCCESSFUL CONNECTION ON PRIORLY CONNECTED FOB

    I/System.out:  we are inside the **public void onServiceConnected(ComponentName                 
    componentName, IBinder service) 
    D/BluetoothAdapter: STATE_ON
    D/BluetoothGatt: connect() - device: 00:60:37:65:D3:D2, auto: false
    D/BluetoothAdapter: isSecureModeEnabled
    D/BluetoothGatt: registerApp()
    D/BluetoothGatt: registerApp() - UUID=8ef8051c-1036-496b-9389-9be8eb40a350
    D/BluetoothLeService: Trying to create a new connection.
    D/BluetoothGatt: onClientRegistered() - status=0 clientIf=8
    D/BluetoothGatt: onClientConnectionState() - status=0 clientIf=8                                         
    device=00:60:37:65:D3:D2
    D/BluetoothGatt: discoverServices() - device: 00:60:37:65:D3:D2
    I/BluetoothLeService: ******* On Connection State onConnectionStateChange 2 Status 0
    I/System.out: Devices click1
    I/System.out:  we are inside the bluetooth le listener and                         
    &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&   10
    D/BluetoothGatt: onConnectionUpdated() - Device=00:60:37:65:D3:D2 interval=6 latency=0         
      timeout=500 status=0
    D/BluetoothGatt: onSearchComplete() = Device=00:60:37:65:D3:D2 Status=0
    I/System.out:  we are inside the onServicesDiscovered(BluetoothGatt gatt, int status), 
     on bluetoothleservice
    I/BluetoothLeService: Find BleoTa Characteristique 49646561-7346-6c6f-6174-40882af10001         
       And Value 49646561-7346-6c6f-6174-40882af10001
    I/System.out: Devices click5
    D/com.example.interactivefirmwareupdate.ConnectFragment: *************************    
     Services Discovered*****************
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From         
    *********** 00001801-0000-1000-8000-00805f9b34fb
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From 
    *********** 00001800-0000-1000-8000-00805f9b34fb
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From 
    *********** 49646561-7346-6c6f-6174-41882ef00000
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID IQ 
    *********** 49646561-7346-6c6f-6174-41882ef00000
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From 
    *********** 49646561-7346-6c6f-6174-40882af10000
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID OTA 
    *********** 49646561-7346-6c6f-6174-40882af10000
    D/BluetoothGatt: setCharacteristicNotification() - uuid: 49646561-7346-6c6f-6174- 
     40882af10001 enable: true
    I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From 
    *********** 0000180a-0000-1000-8000-00805f9b34fb
    D/BluetoothGatt: onConnectionUpdated() - Device=00:60:37:65:D3:D2 interval=36 latency=0 
     timeout=500 status=0
    D/BluetoothGatt: setCharacteristicNotification() - uuid: 49646561-7346-6c6f-6174- 
     40882af10001 enable: true
    I/System.out: ********************We are inside OnPause Line 293 - ConnectFrag and the 
     value of connectingtopin is true
    D/BluetoothGatt: onConnectionUpdated() - Device=00:60:37:65:D3:D2 interval=6 latency=0 
      timeout=500 status=0
    D/FA: Connected to remote service
    D/InputTransport: Input channel destroyed: fd=74
    D/FA: Application going to the background
    D/InputTransport: Input channel constructed: fd=74
    D/ViewRootImpl@ef4a73[MainActivity]: stopped(false) old=false
    I/System.out: Devices click4
    D/com.example.interactivefirmwareupdate.ConnectFragment: ******         
     ChangeCharacteristic49646561-7346-6c6f-6174-40882af10001Data [B@973abf2
    D/com.example.interactivefirmwareupdate.ConnectFragment: ************************* 
     Services showAlertDialog()*****************
    D/Dialog: mIsSamsungBasicInteraction = false
    D/Dialog: mIsSamsungBasicInteraction = false, isMetaDataInActivity = false
    I/DecorView: createDecorCaptionView >> DecorView@c016708[], isFloating: true, 
     isApplication: true, hasWindowDecorCaption: false, hasWindowControllerCallback: false
    D/InputTransport: Input channel constructed: fd=77
    I/com.example.interactivefirmwareupdate.ConnectFragment: Item for List loadFile() 
     iq_9d27Path bleota

LOGCAT FOR FAILED CONNECTION ON NEW/NEVER CONNECTED FOB


D/BluetoothAdapter: stopLeScan()
D/BluetoothAdapter: STATE_ON
D/BluetoothAdapter: STATE_ON
D/BluetoothLeScanner: Stop Scan with callback
D/AbsListView:  in onLayout changed 
D/ViewRootImpl@ef4a73[MainActivity]: ViewPostIme pointer 0
D/ViewRootImpl@ef4a73[MainActivity]: ViewPostIme pointer 1
D/AbsListView: onTouchUp() mTouchMode : 0
I/com.example.interactivefirmwareupdate.ConnectFragment: Click 
I/System.out:  we are inside the   **public void onServiceConnected(ComponentName componentName, IBinder service) 
D/BluetoothLeService: BluetoothAdapter not initialized or unspecified address.com.example.interactivefirmwareupdate.ConnectFragment$5@7a7fcb6 Two Handler (com.example.interactivefirmwareupdate.library.BluetoothLeHandler) c4a3db7
D/BluetoothAdapter: STATE_ON
D/BluetoothGatt: connect() - device: 00:60:37:58:A0:7F, auto: false
D/BluetoothAdapter: isSecureModeEnabled
D/BluetoothGatt: registerApp()
D/BluetoothGatt: registerApp() - UUID=e3f7f816-c25c-4c0f-a5ef-e7775b46f48d
D/BluetoothLeService: Trying to create a new connection.
D/BluetoothGatt: onClientRegistered() - status=0 clientIf=8
D/BluetoothGatt: onClientConnectionState() - status=0 clientIf=8 device=00:60:37:58:A0:7F
D/BluetoothGatt: discoverServices() - device: 00:60:37:58:A0:7F
I/BluetoothLeService: ******* On Connection State onConnectionStateChange 2 Status 0
I/System.out: Devices click1
I/System.out:  we are inside the bluetooth le listener and &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&   11(bonding)
I/System.out: ********************We are inside OnPause Line 293 - ConnectFrag and the value of connectingtopin is true
D/ViewRootImpl@ef4a73[MainActivity]: MSG_WINDOW_FOCUS_CHANGED 0 1
D/InputMethodManager: prepareNavigationBarInfo() DecorView@903cf1b[MainActivity]
D/InputMethodManager: getNavigationBarColor() -855310
D/FA: Connected to remote service
D/BluetoothGatt: onConnectionUpdated() - Device=00:60:37:58:A0:7F interval=6 latency=0 timeout=500 status=0
D/BluetoothGatt: onSearchComplete() = Device=00:60:37:58:A0:7F Status=0
I/System.out:  we are inside the onServicesDiscovered(BluetoothGatt gatt, int status), on bluetoothleservice
I/BluetoothLeService: Find BleoTa Characteristique 49646561-7346-6c6f-6174-40882af10001 And Value 49646561-7346-6c6f-6174-40882af10001
I/System.out: Devices click5
D/com.example.interactivefirmwareupdate.ConnectFragment: ************************* Services Discovered*****************
I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From *********** 00001801-0000-1000-8000-00805f9b34fb
I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From *********** 00001800-0000-1000-8000-00805f9b34fb
I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From *********** 49646561-7346-6c6f-6174-41882ef00000
I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID IQ *********** 49646561-7346-6c6f-6174-41882ef00000
I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID From *********** 49646561-7346-6c6f-6174-40882af10000
I/com.example.interactivefirmwareupdate.ConnectFragment: *********** Service UUID OTA *********** 49646561-7346-6c6f-6174-40882af10000
Service UUID From *********** 0000180a-0000-1000-8000-00805f9b34fb
D/BluetoothGatt: onConnectionUpdated() - Device=00:60:37:58:A0:7F interval=36 latency=0 timeout=500 status=0
\D/FA: Application going to the background
\D/ViewRootImpl@ef4a73[MainActivity]: MSG_WINDOW_FOCUS_CHANGED 1 1
D/InputMethodManager: prepareNavigationBarInfo() DecorView@903cf1b[MainActivity]
D/InputMethodManager: getNavigationBarColor() -855310
D/ViewRootImpl@ef4a73[MainActivity]: stopped(false) old=false
D/BluetoothGatt: setCharacteristicNotification() - uuid: 49646561-7346-6c6f-6174-40882af10001 enable: true
I/System.out: ********************We are inside OnPause Line 293 - ConnectFrag and the value of connectingtopin is true
D/ViewRootImpl@ef4a73[MainActivity]: MSG_WINDOW_FOCUS_CHANGED 0 1
D/InputMethodManager: prepareNavigationBarInfo() DecorView@903cf1b[MainActivity]
D/InputMethodManager: getNavigationBarColor() -855310
D/BluetoothGatt: onConnectionUpdated() - Device=00:60:37:58:A0:7F interval=6 latency=0 timeout=500 status=0
D/InputTransport: Input channel destroyed: fd=74
D/ViewRootImpl@ef4a73[MainActivity]: MSG_RESIZED: frame=[0,0][1200,1920] ci=[0,36][0,578] vi=[0,36][0,578] or=1
D/ViewRootImpl@ef4a73[MainActivity]: Relayout returned: old=[0,0][1200,1920] new=[0,0][1200,1920] result=0x1 surface=true 3960862720 changed=false
D/FA: Application going to the background

如果有人对此有任何意见，我将不胜感激。另外，如果需要，我可以发布代码，我想我会先看看你们中的一些人要说什么，然后再制作一个充满令人困惑的内容的帖子。非常感谢。

【问题讨论】：

【参考方案1】：

您可以尝试使用设置的密码调用 BluetoothDevice.createBond。一旦收到 BluetoothDevice.BOND_NONE 然后调用 BluetoothDevice.connectGatt。 搜索createBond Android，你会看到一些示例

【讨论】：

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