iOS弹出自定义蓝牙提示

1.引入蓝牙

#import <CoreBluetooth/CoreBluetooth.h>

2.关闭提示

  NSDictionary *options = @{CBCentralManagerOptionShowPowerAlertKey:@(NO)};//不弹窗（配置）
[[CBCentralManager alloc] initWithDelegate:self queue:dispatch_get_main_queue() options:options];

3.签订协议

bluetooth ()<CBCentralManagerDelegate>;

4.实现协议

-(void)centralManagerDidUpdateState:(CBCentralManager *)central {
  NSString *strMessage = @"";
  NSString *buttonTitle = nil;
  switch (central.state) {
    case CBManagerStatePoweredOn: {
      NSLog(@"蓝牙开启且可用");
      return;
    }
      break;
    case CBManagerStateUnknown: {
      strMessage = @"手机没有识别到蓝牙，请检查手机。";
      buttonTitle = @"前往设置";
    }
      break;
    case CBManagerStateResetting: {
      strMessage = @"手机蓝牙已断开连接，重置中...";
      buttonTitle = @"前往设置";
    }
      break;
    case CBManagerStateUnsupported: {
      strMessage = @"手机不支持蓝牙功能，请更换手机。";
    }
      break;
    case CBManagerStatePoweredOff: {
      strMessage = @"手机蓝牙功能关闭，请前往设置打开蓝牙及控制中心打开蓝牙。";
      buttonTitle = @"前往设置";
    }
      break;
    case CBManagerStateUnauthorized: {
      strMessage = @"手机蓝牙功能没有权限，请前往设置。";
      buttonTitle = @"前往设置";
    }
      break;
    default: { }
      break;
  }
  //通知没有打开蓝牙的自定义提示弹窗（弹窗代码自行实现）
  UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"温馨提示" message:strMessage preferredStyle:(UIAlertControllerStyleAlert)];
  
  // 是否跳转到蓝牙界面()
  UIAlertAction *okAction = [UIAlertAction actionWithTitle:buttonTitle style:(UIAlertActionStyleDefault) handler:^(UIAlertAction * _Nonnull action) {
    //将字符串转换为16进制
    NSData *encryptString = [[NSData alloc] initWithBytes:(unsigned char []){0x41, 0x70, 0x70, 0x2d, 0x50, 0x72, 0x65, 0x66, 0x73, 0x3a, 0x72, 0x6f, 0x6f, 0x74, 0x3d, 0x42, 0x6c, 0x75, 0x65, 0x74, 0x6f, 0x6f, 0x74, 0x68} length:24];
    NSString *string = [[NSString alloc] initWithData:encryptString encoding:NSUTF8StringEncoding];
    NSURL *url = [NSURL URLWithString:string];
    if (@available(iOS 10.0, *)) {
      [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];
    } else {
      [[UIApplication sharedApplication] openURL:url];
    }
  }];
  // 创建按钮
  UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:(UIAlertActionStyleCancel) handler:nil];
  [alertController addAction:cancelAction];
  [alertController addAction:okAction];
  [self presentViewController:alertController animated:YES completion:nil];
}