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@ -1,8 +1,10 @@ |
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import 'dart:async'; |
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import 'dart:io'; |
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import 'package:app_settings/app_settings.dart'; |
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import 'package:device_jieli/device_jieli.dart'; |
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import 'package:flutter/material.dart'; |
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import 'package:flutter_blue_plus/flutter_blue_plus.dart' as fbp; |
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import 'package:flutter_screenutil/flutter_screenutil.dart'; |
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import 'package:get/get.dart'; |
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import 'package:permission_handler/permission_handler.dart'; |
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@ -37,24 +39,68 @@ class DevicesController extends GetxController { |
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/// 直接读 user 对象不响应式，所以加一个 tick。 |
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final RxInt boundDevicesTick = 0.obs; |
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/// 蓝牙适配器是否已开启（用于 UI 提示）。 |
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final RxBool isBluetoothOn = true.obs; |
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/// 蓝牙开关状态监听。 |
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StreamSubscription<fbp.BluetoothAdapterState>? _adapterStateSub; |
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@override |
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void onInit() { |
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super.onInit(); |
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_bleManager = Get.find<BleManager>(); |
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Future.microtask(startScan); |
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_init(); |
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} |
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@override |
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void onClose() { |
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_adapterStateSub?.cancel(); |
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_bleManager.stopScan(); |
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super.onClose(); |
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} |
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Future<void> _init() async { |
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// 1. 已存在已连接的设备 → 不进扫描流程，直接进入主界面。 |
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try { |
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if (await _bleManager.hasActiveConnection()) { |
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Logger.i(_tag, '已存在已连接设备，直接进入主界面'); |
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Get.offAllNamed(Routes.home); |
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return; |
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} |
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} catch (e) { |
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Logger.w(_tag, '检查已连接设备失败: $e'); |
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} |
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// 2. 监听蓝牙开关：关闭→停扫并刷新提示；从关到开→自动重新扫描。 |
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_listenAdapterState(); |
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// 3. 开始扫描（内部包含蓝牙开关 / 权限检查与引导）。 |
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await startScan(); |
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} |
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void _listenAdapterState() { |
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_adapterStateSub?.cancel(); |
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_adapterStateSub = fbp.FlutterBluePlus.adapterState.listen((state) { |
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final on = state == fbp.BluetoothAdapterState.on; |
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final wasOn = isBluetoothOn.value; |
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isBluetoothOn.value = on; |
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if (!on) { |
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_bleManager.stopScan(); |
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} else if (!wasOn && !isScanning.value) { |
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// 蓝牙刚被打开 → 自动重新扫描。 |
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startScan(); |
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} |
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}); |
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} |
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Future<void> startScan() async { |
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Logger.i(_tag, 'startScan 被调用'); |
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final granted = await _ensureBluetoothPermission(); |
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if (!granted) { |
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Get.snackbar('tip'.tr, 'pleaseGrantBluetoothPermission'.tr); |
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// 1. 蓝牙是否开启，未开启则弹引导对话框。 |
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if (!await _ensureBluetoothOn()) { |
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Logger.w(_tag, '蓝牙未开启，已弹出开启引导'); |
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return; |
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} |
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// 2. 蓝牙相关权限，未授权则弹引导对话框。 |
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if (!await _ensureBluetoothPermission()) { |
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Logger.w(_tag, '蓝牙权限不足，已弹出权限引导'); |
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return; |
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} |
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final uuids = |
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@ -310,6 +356,60 @@ class DevicesController extends GetxController { |
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_bleManager.currentDeviceAddress == device.address; |
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} |
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/// 检查蓝牙是否开启。未开启则弹出引导对话框（Android 可直接开启， |
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/// iOS 引导去系统设置），并返回 false。 |
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Future<bool> _ensureBluetoothOn() async { |
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var state = fbp.FlutterBluePlus.adapterStateNow; |
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// 首帧可能还是 unknown，等首个确定状态（带超时兜底）。 |
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if (state == fbp.BluetoothAdapterState.unknown) { |
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try { |
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state = await fbp.FlutterBluePlus.adapterState |
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.firstWhere((s) => s != fbp.BluetoothAdapterState.unknown) |
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.timeout(const Duration(seconds: 2)); |
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} catch (_) { |
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state = fbp.FlutterBluePlus.adapterStateNow; |
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} |
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} |
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isBluetoothOn.value = state == fbp.BluetoothAdapterState.on; |
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if (isBluetoothOn.value) return true; |
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_showEnableBluetoothDialog(); |
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return false; |
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} |
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void _showEnableBluetoothDialog() { |
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if (Get.isDialogOpen ?? false) return; |
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Get.dialog( |
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AlertDialog( |
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title: Text('needEnableBluetooth'.tr), |
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content: Text('enableBluetoothDialogContent'.tr), |
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actions: [ |
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TextButton( |
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onPressed: () => Get.back(), |
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child: Text('cancel'.tr), |
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), |
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TextButton( |
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onPressed: () async { |
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Get.back(); |
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// Android 可直接请求系统开启蓝牙；iOS 不允许，引导去系统设置。 |
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if (Platform.isAndroid) { |
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try { |
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await fbp.FlutterBluePlus.turnOn(); |
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return; |
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} catch (e) { |
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Logger.w(_tag, 'turnOn 失败，转去系统蓝牙设置: $e'); |
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} |
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} |
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await AppSettings.openAppSettings( |
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type: AppSettingsType.bluetooth); |
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}, |
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child: Text('enableBluetooth'.tr), |
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), |
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], |
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), |
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barrierDismissible: false, |
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); |
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} |
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Future<bool> _ensureBluetoothPermission() async { |
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// iOS: CoreBluetooth 首次扫描时由系统自动弹出蓝牙权限对话框 |
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// (依赖 Info.plist 的 NSBluetoothAlwaysUsageDescription)， |
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@ -324,10 +424,37 @@ class DevicesController extends GetxController { |
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].request(); |
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final scanOk = results[Permission.bluetoothScan]?.isGranted ?? false; |
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final connectOk = results[Permission.bluetoothConnect]?.isGranted ?? false; |
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return scanOk && connectOk; |
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if (scanOk && connectOk) return true; |
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// 被拒（含永久拒绝）→ 弹引导对话框，带用户去系统设置手动开启。 |
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_showPermissionDialog(); |
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return false; |
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} catch (e) { |
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Logger.error('请求蓝牙权限失败: $e'); |
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return false; |
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} |
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} |
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void _showPermissionDialog() { |
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if (Get.isDialogOpen ?? false) return; |
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Get.dialog( |
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AlertDialog( |
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title: Text('needPermission'.tr), |
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content: Text('blePermissionDialogContent'.tr), |
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actions: [ |
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TextButton( |
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onPressed: () => Get.back(), |
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child: Text('cancel'.tr), |
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), |
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TextButton( |
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onPressed: () { |
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Get.back(); |
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AppSettings.openAppSettings(); |
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}, |
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child: Text('goToSettings'.tr), |
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), |
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], |
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), |
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barrierDismissible: false, |
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); |
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} |
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} |
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