三、游戏中蓝牙通讯类的设计
创建一个命名为BlueToothTool的工具类，作为游戏的蓝牙通讯类，编写其头文件如下：
BlueToothTool.h
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#import <CoreBluetooth/CoreBluetooth.h>
//这个代理用于处理接收到对方设备发送来的数据后的回调
@protocol BlueToothToolDelegate <NSObject>
//获取对方数据
-(void)getData:(NSString *)data;
@end
@interface BlueToothTool : NSObject<CBPeripheralManagerDelegate,CBCentralManagerDelegate,CBPeripheralDelegate,UIAlertViewDelegate>
//代理
@property(nonatomic,weak)id<BlueToothToolDelegate>delegate;
//标记是否是游戏中的房主
@property(nonatomic,assign)BOOL isCentral;
/**
*获取单例对象的方法
*/
+(instancetype)sharedManager;
/*
*作为游戏的房主建立游戏房间
*/
-(void)setUpGame:(NSString *)name block:(void(^)(BOOL first))finish;
/*
*作为游戏的加入者查找附近的游戏
*/
-(void)searchGame;
/**
*断块连接
*/
-(void)disConnect;
/*
*进行写数据操作
*/
-(void)writeData:(NSString *)data;
@end
实现BlueToothTool.m文件如下：
#import "BlueToothTool.h"
@implementation BlueToothTool
{
//外设管理中心
CBPeripheralManager * _peripheralManager;
//外设提供的服务
CBMutableService * _ser;
//服务提供的读特征值
CBMutableCharacteristic * _readChara;
//服务提供的写特征值
CBMutableCharacteristic * _writeChara;
//等待对方加入的提示视图
UIView * _waitOtherView;
//正在扫描附近游戏的提示视图
UIView * _searchGameView;
//设备中心管理对象
CBCentralManager * _centerManger;
//要连接的外设
CBPeripheral * _peripheral;
//要交互的外设属性
CBCharacteristic * _centerReadChara;
CBCharacteristic * _centerWriteChara;
//开始游戏后的回调 告知先手与后手信息
void(^block)(BOOL first);
}
//实现单例方法
+(instancetype)sharedManager{
static BlueToothTool *tool = nil;
static dispatch_once_t predicate;
dispatch_once(&predicate, ^{
tool = [[self alloc] init];
});
return tool;
}
//实现创建游戏的方法
-(void)setUpGame:(NSString *)name block:(void (^)(BOOL))finish{
block = [finish copy];
if (_peripheralManager==nil) {
//初始化服务
_ser= [[CBMutableService alloc]initWithType:[CBUUID UUIDWithString:@"68753A44-4D6F-1226-9C60-0050E4C00067"] primary:YES];
//初始化特征
_readChara = [[CBMutableCharacteristic alloc]initWithType:[CBUUID UUIDWithString:@"68753A44-4D6F-1226-9C60-0050E4C00067"] properties:CBCharacteristicPropertyNotify value:nil permissions:CBAttributePermissionsReadable];
_writeChara = [[CBMutableCharacteristic alloc]initWithType:[CBUUID UUIDWithString:@"68753A44-4D6F-1226-9C60-0050E4C00068"] properties:CBCharacteristicPropertyWriteWithoutResponse value:nil permissions:CBAttributePermissionsWriteable];
//向服务中添加特征
_ser.characteristics = @[_readChara,_writeChara];
_peripheralManager = [[CBPeripheralManager alloc]initWithDelegate:self queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0)];
}
//设置为房主
_isCentral=YES;
//开始广播广告
[_peripheralManager startAdvertising:@{CBAdvertisementDataLocalNameKey:@"WUZIGame"}];
}
//外设检测蓝牙状态
-(void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral{
//判断是否可用
if (peripheral.state==CBPeripheralManagerStatePoweredOn) {
//添加服务
[_peripheralManager addService:_ser];
//开始广播广告
[_peripheralManager startAdvertising:@{CBAdvertisementDataLocalNameKey:@"WUZIGame"}];
}else{
//弹提示框
dispatch_async(dispatch_get_main_queue(), ^{
[self showAlert];
});
}
}
//开始放广告的回调
-(void)peripheralManagerDidStartAdvertising:(CBPeripheralManager *)peripheral error:(NSError *)error{
if (_waitOtherView==nil) {
_waitOtherView = [[UIView alloc]initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width/2-100, 240, 200, 100)];
dispatch_async(dispatch_get_main_queue(), ^{
UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];
label.backgroundColor = [UIColor clearColor];
label.textAlignment = NSTextAlignmentCenter;
label.text = @"等待附近玩家加入";
[_waitOtherView addSubview:label];
_waitOtherView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.4];
[[[UIApplication sharedApplication].delegate window]addSubview:_waitOtherView];
});
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[_waitOtherView removeFromSuperview];
[[[UIApplication sharedApplication].delegate window]addSubview:_waitOtherView];
});
}
}
//添加服务后回调的方法
-(void)peripheralManager:(CBPeripheralManager *)peripheral didAddService:(CBService *)service error:(NSError *)error{
if (error) {
NSLog(@"添加服务失败");
}
NSLog(@"添加服务成功");
}
//中心设备订阅特征值时回调
-(void)peripheralManager:(CBPeripheralManager *)peripheral central:(CBCentral *)central didSubscribeToCharacteristic:(CBCharacteristic *)characteristic{
[_peripheralManager stopAdvertising];
if (_isCentral) {
UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"" message:@"请选择先手后手" delegate:self cancelButtonTitle:@"我先手" otherButtonTitles:@"我后手", nil];
dispatch_async(dispatch_get_main_queue(), ^{
[_waitOtherView removeFromSuperview];
[alert show];
});
}
}
//收到写消息后的回调
-(void)peripheralManager:(CBPeripheralManager *)peripheral didReceiveWriteRequests:(NSArray<CBATTRequest *> *)requests{
dispatch_async(dispatch_get_main_queue(), ^{
[self.delegate getData:[[NSString alloc]initWithData:requests.firstObject.value encoding:NSUTF8StringEncoding]];
});
}
//弹提示框的方法
-(void)showAlert{
UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"温馨提示" message:@"请确保您的蓝牙可用" delegate:nil cancelButtonTitle:@"好的" otherButtonTitles:nil, nil];
[alert show];
}
//===============================================================作为游戏加入这实现的方法========
//搜索周围游戏
-(void)searchGame{
if (_centerManger==nil) {
_centerManger = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0)];
}else{
[_centerManger scanForPeripheralsWithServices:nil options:nil];
if (_searchGameView==nil) {
_searchGameView = [[UIView alloc]initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width/2-100, 240, 200, 100)];
UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];
label.backgroundColor = [UIColor clearColor];
label.textAlignment = NSTextAlignmentCenter;
label.text = @"正在扫加入描附近游戏";
_searchGameView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.4];
[_searchGameView addSubview:label];
[[[UIApplication sharedApplication].delegate window]addSubview:_searchGameView];
}else{
[_searchGameView removeFromSuperview];
[[[UIApplication sharedApplication].delegate window]addSubview:_searchGameView];
}
}
//设置为游戏加入方
_isCentral = NO;
}
//设备硬件检测状态回调的方法 可用后开始扫描设备
-(void)centralManagerDidUpdateState:(CBCentralManager *)central{
if (_centerManger.state==CBCentralManagerStatePoweredOn) {
[_centerManger scanForPeripheralsWithServices:nil options:nil];
if (_searchGameView==nil) {
dispatch_async(dispatch_get_main_queue(), ^{
_searchGameView = [[UIView alloc]initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width/2-100, 240, 200, 100)];
UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];
label.backgroundColor = [UIColor clearColor];
label.textAlignment = NSTextAlignmentCenter;
label.text = @"正在扫加入描附近游戏";
_searchGameView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.4];
[_searchGameView addSubview:label];
[[[UIApplication sharedApplication].delegate window]addSubview:_searchGameView];
});
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[_searchGameView removeFromSuperview];
[[[UIApplication sharedApplication].delegate window]addSubview:_searchGameView];
});
}
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[self showAlert];
});
}
}
//发现外设后调用的方法
-(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *,id> *)advertisementData RSSI:(NSNumber *)RSSI{
//获取设备的名称 或者广告中的相应字段来配对
NSString * name = [advertisementData objectForKey:CBAdvertisementDataLocalNameKey];
if ([name isEqualToString:@"WUZIGame"]) {
//保存此设备
_peripheral = peripheral;
//进行连接
[_centerManger connectPeripheral:peripheral options:@{CBConnectPeripheralOptionNotifyOnConnectionKey:@YES}];
}
}
//连接外设成功的回调
-(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral{
NSLog(@"连接成功");
//设置代理与搜索外设中的服务
[peripheral setDelegate:self];
[peripheral discoverServices:nil];
dispatch_async(dispatch_get_main_queue(), ^{
[_searchGameView removeFromSuperview];
});
}
//连接断开
-(void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{
NSLog(@"连接断开");
[_centerManger connectPeripheral:peripheral options:@{CBConnectPeripheralOptionNotifyOnConnectionKey:@YES}];
}
//发现服务后回调的方法
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{
for (CBService *service in peripheral.services)
{
//发现服务 比较服务的UUID
if ([service.UUID isEqual:[CBUUID UUIDWithString:@"68753A44-4D6F-1226-9C60-0050E4C00067"]])
{
NSLog(@"Service found with UUID: %@", service.UUID);
//查找服务中的特征值
[peripheral discoverCharacteristics:nil forService:service];
break;
}
}
}
//开发服务中的特征值后回调的方法
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
for (CBCharacteristic *characteristic in service.characteristics)
{
//发现特征 比较特征值得UUID 来获取所需要的
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"68753A44-4D6F-1226-9C60-0050E4C00067"]]) {
//保存特征值
_centerReadChara = characteristic;
//监听特征值
[_peripheral setNotifyValue:YES forCharacteristic:_centerReadChara];
}
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"68753A44-4D6F-1226-9C60-0050E4C00068"]]) {
//保存特征值
_centerWriteChara = characteristic;
}
}
}
//所监听的特征值更新时回调的方法
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
//更新接收到的数据
NSLog(@"%@",[[NSString alloc]initWithData:characteristic.value encoding:NSUTF8StringEncoding]);
//要在主线程中刷新
dispatch_async(dispatch_get_main_queue(), ^{
[self.delegate getData:[[NSString alloc]initWithData:characteristic.value encoding:NSUTF8StringEncoding]];
});
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
//告诉开发者先后手信息
if (buttonIndex==0) {
if (_isCentral) {
block(1);
}else{
block(0);
}
}else{
if (_isCentral) {
block(0);
}else{
block(1);
}
}
}
//断开连接
-(void)disConnect{
if (!_isCentral) {
[_centerManger cancelPeripheralConnection:_peripheral];
[_peripheral setNotifyValue:NO forCharacteristic:_centerReadChara];
}
}
//写数据
-(void)writeData:(NSString *)data{
if (_isCentral) {
[_peripheralManager updateValue:[data dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:_readChara onSubscribedCentrals:nil];
}else{
[_peripheral writeValue:[data dataUsingEncoding:NSUTF8StringEncoding] forCharacteristic:_centerWriteChara type:CBCharacteristicWriteWithoutResponse];
}
}
@end
附录：游戏的源码已经放在git上，时间比较仓促，只用了一下午来写，其中还有许多细节与bug没有进行调整，有需要的可以作为参考：
