蓝牙开发

#import "ViewController.h"

#import "TableViewCell.h"

#import "PeripheralViewController.h"

 

#define ScanTimeInterval 1.0

 

@interface ViewController ()

 

@property (nonatomic,strong) NSMutableArray *devicesArray;

@property (nonatomic,strong) CBCentralManager *centralManager;

@property (nonatomic,strong) CBPeripheral *selectedPeripheral;

@property (nonatomic,strong) NSTimer *scanTimer;

 

@end

 

@implementation ViewController

 

- (void)dealloc

{

    _devicesArray = nil;

    _centralManager = nil;

    _selectedPeripheral = nil;

    _scanTimer = nil;

}

 

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    _devicesArray = [[NSMutableArray alloc] initWithCapacity:1];

     

    [self initWithLeftBarButton];

    [self initWithRightBarButton];

    [self initWithTableView];

    [self initWithCBCentralManager];

}

 

#pragma mark - UI

- (void)initWithLeftBarButton

{

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [button setFrame:CGRectMake(0.0, 0.0, 60.0, 40.0)];

    [button setBackgroundColor:[UIColor clearColor]];

    [button setTitle:@"搜索" forState:UIControlStateNormal];

    [button addTarget:self action:@selector(startScanPeripherals) forControlEvents:UIControlEventTouchUpInside];

     

    UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithCustomView:button];

    [self.navigationItem setLeftBarButtonItem:item];

}

 

- (void)initWithRightBarButton

{

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [button setFrame:CGRectMake(0.0, 0.0, 60.0, 40.0)];

    [button setBackgroundColor:[UIColor clearColor]];

    [button setTitle:@"停止" forState:UIControlStateNormal];

    [button addTarget:self action:@selector(stopScan) forControlEvents:UIControlEventTouchUpInside];

     

    UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithCustomView:button];

    [self.navigationItem setRightBarButtonItem:item];

}

 

- (void)initWithTableView

{

    if (!_tableView) {

        _tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];

        [_tableView setDelegate:self];

        [_tableView setDataSource:self];

        [_tableView setBackgroundColor:[UIColor clearColor]];

        [_tableView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];

        [_tableView setTranslatesAutoresizingMaskIntoConstraints:NO];

    }

    if (_tableView && _tableView.superview != self.view) {

        [self.view addSubview:_tableView];

         

        NSArray *h = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[_tableView]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_tableView)];

        NSArray *v = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[_tableView]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_tableView)];

        [self.view addConstraints:h];

        [self.view addConstraints:v];

    }

}

 

#pragma mark - ScanTimer

- (void)startScanPeripherals

{

    if (!_scanTimer) {

        _scanTimer = [NSTimer timerWithTimeInterval:ScanTimeInterval target:self selector:@selector(scanForPeripherals) userInfo:nil repeats:YES];

        [[NSRunLoop mainRunLoop] addTimer:_scanTimer forMode:NSDefaultRunLoopMode];

    }

    if (_scanTimer && !_scanTimer.valid) {

        [_scanTimer fire];

    }

}

 

- (void)stopScan

{

    if (_scanTimer && _scanTimer.valid) {

        [_scanTimer invalidate];

        _scanTimer = nil;

    }

    [_centralManager stopScan];

}

 

#pragma mark - CBCentralManager

- (void)initWithCBCentralManager

{

    if (!_centralManager) {

        dispatch_queue_t queue = dispatch_get_main_queue();

        _centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:queue options:@{CBCentralManagerOptionShowPowerAlertKey:@YES}];

        [_centralManager setDelegate:self];

    }

}

 

- (void)scanForPeripherals

{

    if (_centralManager.state == CBCentralManagerStateUnsupported) {//设备不支持蓝牙

         

    }else {//设备支持蓝牙连接

        if (_centralManager.state == CBCentralManagerStatePoweredOn) {//蓝牙开启状态

            //[_centralManager stopScan];

            [_centralManager scanForPeripheralsWithServices:nil options:@{CBCentralManagerScanOptionAllowDuplicatesKey:[NSNumber numberWithBool:NO]}];

        }

    }

}

 

- (void)connectPeripheral

{

     

}

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

#pragma mark - UITableView Datasource && Delegate

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    return 1;

}

 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

    return _devicesArray.count;

}

 

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

    if (section == 0) {

        return @"Peripherals Nearby";

    }else {

        return nil;

    }

}

 

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

    return 50.0;

}

 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    static NSString *cellID = @"cellID";

    TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];

    if (!cell) {

        cell = [[TableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellID];

    }

    NearbyPeripheralInfo *info = [_devicesArray objectAtIndex:indexPath.row];

    [cell setPeripheral:info];

    return cell;

}

 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    if (_centralManager.state == CBCentralManagerStateUnsupported) {//设备不支持蓝牙

         

    }else {//设备支持蓝牙连接

        if (_centralManager.state == CBCentralManagerStatePoweredOn) {//蓝牙开启状态

            //连接设备

            NearbyPeripheralInfo *info = [_devicesArray objectAtIndex:indexPath.row];

            [_centralManager connectPeripheral:info.peripheral options:@{CBConnectPeripheralOptionNotifyOnConnectionKey:@YES,CBConnectPeripheralOptionNotifyOnNotificationKey:@YES,CBConnectPeripheralOptionNotifyOnDisconnectionKey:@YES}];

        }

    }

}

 

#pragma mark - CBCentralManager Delegate

- (void)centralManagerDidUpdateState:(CBCentralManager *)central

{

    switch (central.state) {

        case CBCentralManagerStatePoweredOff:

            NSLog(@"CBCentralManagerStatePoweredOff");

            break;

        case CBCentralManagerStatePoweredOn:

            NSLog(@"CBCentralManagerStatePoweredOn");

            break;

        case CBCentralManagerStateResetting:

            NSLog(@"CBCentralManagerStateResetting");

            break;

        case CBCentralManagerStateUnauthorized:

            NSLog(@"CBCentralManagerStateUnauthorized");

            break;

        case CBCentralManagerStateUnknown:

            NSLog(@"CBCentralManagerStateUnknown");

            break;

        case CBCentralManagerStateUnsupported:

            NSLog(@"CBCentralManagerStateUnsupported");

            break;

             

        default:

            break;

    }

}

//发现蓝牙设备

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI

{

//    NSLog(@"\nperipheral is :\n%@\nadvertisementData is :\n%@\nRSSI is :%d",peripheral,advertisementData,[RSSI intValue]);

     

     

    BOOL isExist = NO;

    NearbyPeripheralInfo *info = [[NearbyPeripheralInfo alloc] init];

    info.peripheral = peripheral;

    info.advertisementData = advertisementData;

    info.RSSI = RSSI;

     

    if (_devicesArray.count == 0) {

        [_devicesArray addObject:info];

        NSIndexPath *path = [NSIndexPath indexPathForRow:0 inSection:0];

        [_tableView insertRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationFade];

    }else {

        for (int i = 0;i < _devicesArray.count;i++) {

            NearbyPeripheralInfo *originInfo = [_devicesArray objectAtIndex:i];

            CBPeripheral *per = originInfo.peripheral;

            if ([peripheral.identifier.UUIDString isEqualToString:per.identifier.UUIDString]) {

                isExist = YES;

                [_devicesArray replaceObjectAtIndex:i withObject:info];

                [_tableView reloadData];

            }

        }

        if (!isExist) {

            [_devicesArray addObject:info];

            NSIndexPath *path = [NSIndexPath indexPathForRow:(_devicesArray.count - 1) inSection:0];

            [_tableView insertRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationFade];

        }

    }

}

//连接蓝牙设备成功

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral

{

    NSLog(@"%s",__FUNCTION__);

    [self stopScan];

    _selectedPeripheral = peripheral;

    PeripheralViewController *viewController = [[PeripheralViewController alloc] initWithNibName:nil bundle:nil];

    viewController.currentPeripheral = _selectedPeripheral;

    [self.navigationController pushViewController:viewController animated:YES];

}

//连接蓝牙设备失败

- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error

{

    NSLog(@"%s",__FUNCTION__);

}

//断开连接

- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error

{

    NSLog(@"%s",__FUNCTION__);

}

@end