#import "ViewController.h"
#import <CoreBluetooth/CoreBluetooth.h>
#import "NSObject+GetWeidth.h"
#define NAME @"YUNMAI-SIGNAL-CW"
@interface ViewController ()<CBCentralManagerDelegate,CBPeripheralDelegate,UITableViewDelegate,UITableViewDataSource>
//主設管理中心，需要且必須是單例
@property (nonatomic, strong) CBCentralManager *centralManager;//中心管理者
@property (nonatomic, retain) NSMutableArray *peripheralList;//外設列表
@property (nonatomic, strong) CBPeripheral *peripheral;
@property (strong, nonatomic) IBOutlet UITableView *showFindDevicesView;
@property (strong, nonatomic) IBOutlet UITextView *showReadDataView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.showFindDevicesView.delegate = self;
self.showFindDevicesView.dataSource = self;
}
//MARK:------視圖--------
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.peripheralList.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *cellID = @"id";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
}
CBPeripheral *peripheral = self.peripheralList[indexPath.row];
cell.textLabel.text = peripheral.name==nil?@"匿名設備":peripheral.name;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
CBPeripheral *peripheral = self.peripheralList[indexPath.row];
self.peripheral = peripheral;
[self.centralManager cancelPeripheralConnection:self.peripheral];
[self.centralManager connectPeripheral:self.peripheral options:nil];
}
- (void)alertViewWithMessage:(NSString *)message{
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"連接狀態" message:message preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *act = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[self dismissViewControllerAnimated:YES completion:nil];
}];
[alert addAction:act];
[self presentViewController:alert animated:YES completion:nil];
}
//MARK:------功能--------
- (IBAction)searDevices:(id)sender {
[self.centralManager scanForPeripheralsWithServices:nil options:@{CBCentralManagerScanOptionAllowDuplicatesKey:@(NO)}];
}
//MARK:-------中心管理者的方法--------
- (void)centralManagerDidUpdateState:(CBCentralManager *)central{
NSString *message = nil;
switch (central.state) {
case CBCentralManagerStateUnknown: {
message = @"中心設備 未知狀態";
break;
}
case CBCentralManagerStateResetting: {
message = @"中心設備 重啟中";
break;
}
case CBCentralManagerStateUnsupported: {
message = @"中心設備 不支持";
break;
}
case CBCentralManagerStateUnauthorized: {
message = @"中心設備 未授權";
break;
}
case CBCentralManagerStatePoweredOff: {
message = @"中心設備 關閉";
break;
}
case CBCentralManagerStatePoweredOn: {
message = @"中心設備 開啟";
break;
}
}
}
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *, id> *)advertisementData RSSI:(NSNumber *)RSSI{
[self.peripheralList addObject:peripheral];
if ([peripheral.name isEqualToString:NAME]) {
[central stopScan];
dispatch_async(dispatch_get_main_queue(), ^{
[self.showFindDevicesView reloadData];
});
}
}
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral{
self.peripheral.delegate = self;
[self.peripheral discoverServices:nil];
[self alertViewWithMessage:@"設備已連接成功"];
}
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error{
[self alertViewWithMessage:error.description];
}
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error{
[self alertViewWithMessage:@"設備已斷開"];
}
//MARK:-------外設的代理方法---------
//連接上外設 可以獲得所有的服務
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(nullable NSError *)error{
for (CBService *service in peripheral.services) {
// 會去調用 獲得特征的代理
[peripheral discoverCharacteristics:nil forService:service];
}
}
//獲得特征的回調
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
for (CBCharacteristic *cha in service.characteristics) {
// 回去調用 獲得特征值的代理
[peripheral readValueForCharacteristic:cha];
[peripheral setNotifyValue:YES forCharacteristic:cha];
}
}
//獲得特征值
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(nullable NSError *)error{
NSString *content = [NSString stringWithFormat:@"%@",characteristic];
NSLog(@"獲得到的數據:%@",characteristic);
if (content==nil) {
return;
}
content = [content substringWithRange:NSMakeRange(content.length - 7, 4)];
double curNum = [content getWeidthByHEX:content];;
if (self.memoryNum == [content getWeidthByHEX:content] && self.memoryNum >0) {
__weak ViewController *weakVC = self;
dispatch_async(dispatch_get_main_queue(), ^{
self.showReadDataView.text = [NSString stringWithFormat:@"您現在體重:\n%0.2f斤",weakVC.memoryNum*2];
});
}
self.memoryNum = curNum;
}
//MARK:-----創建對象-------
- (CBCentralManager *)centralManager{
if (!_centralManager) {
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
_centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:queue];
}
return _centralManager;
}
- (NSMutableArray *)peripheralList{
if (!_peripheralList) {
_peripheralList = [NSMutableArray array];
}
return _peripheralList;
}
在.h文件中
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property (nonatomic, assign) double memoryNum;
@end
#import "NSObject+GetWeidth.h"
@implementation NSObject (GetWeidth)
- (double)getWeidthByHEX:(NSString *)dataString{
double weidth = 0;
dataString = [dataString lowercaseString];
NSDictionary *returnNumDic = @{@"1":@1,@"2":@2,@"3":@3,@"4":@4,@"5":@5,@"6":@6,@"7":@7,@"8":@8,@"9":@9,@"a":@10,@"b":@11,@"c":@12,@"d":@13,@"e":@14,@"f":@15};
for (int i = 0; i < dataString.length ; i++) {
NSString *num = [dataString substringWithRange:NSMakeRange(i, 1)];
int index = [returnNumDic[num] intValue];
switch (i) {
case 0:
weidth = weidth + index * 16*16*16;
break;
case 1:
weidth = weidth + index * 16*16;
break;
case 2:
weidth = weidth + index * 16;
break;
case 3:
weidth = weidth + index;
break;
default:
break;
}
}
return weidth/100.0f;
}
@end
import <Foundation/Foundation.h>
@interface NSObject (GetWeidth)
- (double)getWeidthByHEX:(NSString *)dataString;
@end
