app-zj/lib/service/print_service.dart

import 'package:lszlgl/utils/permission_utils.dart';
import 'package:permission_handler/permission_handler.dart';

import '../plugin/bluetooth_plugin.dart';
import '../router/my_navigator.dart';

class PrintService {
  PrintService._();

  //是否打开蓝牙
  static Future<bool> isBleOpen() async {
    return await BluetoothPlugin.instance.isBleOpen();
  }

  //安卓版本是否大于等于31
  static Future<bool> isSDKIntGreaterOrEqual() async {
    return await BluetoothPlugin.instance.isSDKIntGreaterOrEqual31();
  }

  //是否支持蓝牙操作
  static Future<bool> canExecAction() async {
    if (await isBleOpen()) {

      bool allGranted = false;
      String permissionName = '';
      // permissionRequest
     if(await isSDKIntGreaterOrEqual()) {

       if (await PermissionHandler.handleWith(Permission.bluetoothScan)) {
         allGranted = true;
       } else {
         permissionName = Permission.bluetoothScan.toString();
         allGranted = false;
       }
       if(await PermissionHandler.handleWith(Permission.bluetoothConnect)) {
         allGranted = true;
       } else {
         permissionName = '$permissionName ${Permission.bluetoothConnect}';
         allGranted = false;
       }
     }
      //所有权限申请通过
      if (await PermissionHandler.handleWith(Permission.location)) {
        allGranted = true;
      } else {
        permissionName = Permission.location.toString();
        allGranted = false;
      }
     if(allGranted) {
       return true;
     } else {
       MyNavigator.showToast('权限打开失败:$permissionName');
       return false;
     }
    } else {
      // 蓝牙未开启
      MyNavigator.showToast('蓝牙未开启');
      return false;
    }
  }

  //开始扫描
  static Future<int> startBluetoothDiscovery() async {

    if(await canExecAction()) {
      return await BluetoothPlugin.instance.startBluetoothDiscovery();
    } else {
      return 0;
    }
  }

  //开始配对
  static Future<int> startBluetoothPair(BlueDeviceInfo deviceInfo) async {

    if(await canExecAction()) {
      return await BluetoothPlugin.instance.startBluetoothPair(deviceInfo);
    } else {
      return 0;
    }
  }

  //开始连接
  static Future<int> startBluetoothConnect(BlueDeviceInfo deviceInfo) async {

    if(await canExecAction()) {
      return await BluetoothPlugin.instance.startBluetoothConnect(deviceInfo);
    } else {
      return 0;
    }
  }

  //断开连接
  static Future<int> endBluetoothConnect(BlueDeviceInfo deviceInfo) async {

    if(await canExecAction()) {
      return await BluetoothPlugin.instance.endBluetoothConnect(deviceInfo);
    } else {
      return 0;
    }
  }

  //开始打印
  static Future<int> startBluetoothPrint(BlueDeviceInfo deviceInfo) async {

    if(await canExecAction()) {
      return await BluetoothPlugin.instance.startBluetoothPrint(deviceInfo);
    } else {
      return 0;
    }
  }


}