Google IOT Core之 APP获取设备数据（二）

以上一篇Google IOT Core之 Cloud Function 部署（一）阐述了如何使用Google IOT Core 以及 Cloud Function云函数为链接，在此，下面我们来了解，如何在移动端获取到Google IOT Core 设备/注册表。你所需要的信息，只要Google IOT Core有API，就可以函数实现。

1.部署了完成好的云函数功能，访问云函数URL。
2.如何编写IOS APP。
3.客户的需求是什么？我们要怎么去实现？
4.利用POST，GET等方式，去调用Google IOT Core API。
5.获取到JSON，进行解析。

一：Postman测试Google Iot Core设备得到JSON接口数据；

二：IOS项目结构设计：

1.HomeView.h

#import 
#import "BaseView.h"

@protocol HomeViewDelegate 

-(void)onClick;


@end

NS_ASSUME_NONNULL_BEGIN

@interface HomeView : BaseView

@property(weak,nonatomic) id delegate;

@property(nonatomic, strong) UITableView *tableView;

@end

NS_ASSUME_NONNULL_END

2.HomeView.m

#import "HomeView.h"


@implementation HomeView

-(instancetype) init{
    self = [super init];
    if(self){
        [self initView];
    }
    return self;
}

-(void)initView{
    _tableView = [[UITableView alloc] init];
    _tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    [self addSubview:_tableView];
    
    [_tableView makeConstraints:^(MASConstraintMaker *make){
        make.top.equalTo(self).offset(70);
        make.left.equalTo(self).offset(0);
        make.right.equalTo(self).offset(0);
        make.bottom.equalTo(self).offset(-60);
    }];
    
    UIView *bottomView = [[UIView alloc] init];
    bottomView.backgroundColor = [self.cmUtil stringToColor:@"#c1c1c1"];
    [self addSubview:bottomView];
    
    [bottomView makeConstraints:^(MASConstraintMaker *make){
        make.left.equalTo(self).offset(0);
        make.right.equalTo(self).offset(0);
        make.bottom.equalTo(self).offset(0);
        make.height.equalTo(@60);
    }];
    
    UIImageView *addDeviceLb = [[UIImageView alloc] init];
    addDeviceLb = [[UIImageView alloc] init];
    addDeviceLb.image=[UIImage imageNamed:@"add"];
    [bottomView addSubview:addDeviceLb];

    [addDeviceLb makeConstraints:^(MASConstraintMaker *make){
        make.centerX.mas_equalTo(0);
        make.centerY.mas_equalTo(0);
        make.width.equalTo(@39);
        make.height.equalTo(@39);
    }];
    
    UITapGestureRecognizer *tapGesturRecognizer=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(onClick)];

    [bottomView addGestureRecognizer:tapGesturRecognizer];
}

-(void)onClick{
    if(self.delegate){
        [self.delegate onClick];
    }
}


@end

3.cell.h模块层tabview属性的定义；

#import 
#import "BaseViewCell.h"
#import "CommonUtil.h"

NS_ASSUME_NONNULL_BEGIN

@interface HomeViewCell : BaseViewCell

@property(nonatomic,strong) UIView *topView;

@property(nonatomic,strong) UIView *conView;

@property(nonatomic,strong) UIView *mMainVw;

@property(nonatomic, strong) UIView *btmView;

@property (strong, nonatomic) UILabel *mDeviceNameLb;

@property (strong, nonatomic) UILabel *mDeviceRssiLb;

@property (strong, nonatomic) UILabel *mDeviceAddreLb;

@property (strong, nonatomic) UILabel *mConentMqtt;

@property(nonatomic,strong) UIImageView *mStatusIv;

@property(nonatomic,strong) UIImageView *mDeviceStatus;

@property(nonatomic,strong) UIImageView *mBatteryStatus;

@property(nonatomic,strong) UIImageView *mFanStatus;

@end

NS_ASSUME_NONNULL_END

4.cell.m

#import "HomeViewCell.h"
@implementation HomeViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
    
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if(self){
        CommonUtil *cmUtil = [[CommonUtil alloc] init];
        
        // 第一段布局
        // 高度 100
//        _topView = [[UIView alloc] init];
//        _topView.backgroundColor = [cmUtil stringToColor:@"#EAEAEA"];
//        _topView.layer.cornerRadius = 5.f;
//        _topView.clipsToBounds=YES;
//        _topView.layer.shadowColor=[UIColor blackColor].CGColor;
//        _topView.layer.shadowOffset=CGSizeMake(5, 5);
//        _topView.layer.shadowOpacity=0.5;
//        _topView.layer.shadowRadius=5;
//        [self addSubview:_topView];
//
//        [_topView makeConstraints:^(MASConstraintMaker *make){
//            make.left.equalTo(self).offset(5);
//            make.right.equalTo(self).offset(-5);
//            make.top.equalTo(self).offset(0);
//            make.height.equalTo(100);
//        }];
//
//        UILabel *addDeviceLb = [[UILabel alloc] init];
//        addDeviceLb.textColor = [UIColor blackColor];
//        addDeviceLb.font = [UIFont fontWithName:@"Helvetica-Bold" size:23];
//        addDeviceLb.textAlignment = NSTextAlignmentCenter;
//        [_topView addSubview:addDeviceLb];
//
//        [addDeviceLb makeConstraints:^(MASConstraintMaker *make){
//            make.centerX.equalTo(self.topView);
//            make.centerY.equalTo(self.topView);
//            make.width.equalTo(@200);
//            make.height.equalTo(@30);
//        }];
//
//        addDeviceLb.text = @"Add Device";
        
        //第二段布局
        self.mMainVw = [[UIView alloc] init];
        self.mMainVw.backgroundColor = [cmUtil stringToColor:@"#EAEAEA"];
        self.mMainVw.layer.cornerRadius = 5.f;
        self.mMainVw.clipsToBounds=YES;
        self.mMainVw.layer.shadowColor=[UIColor blackColor].CGColor;
        self.mMainVw.layer.shadowOffset=CGSizeMake(5, 5);
        self.mMainVw.layer.shadowOpacity=0.5;
        self.mMainVw.layer.shadowRadius=5;
        [self addSubview:self.mMainVw];
        
        [self.mMainVw makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self).offset(10);
            make.left.equalTo(self).offset(10);
            make.right.equalTo(self).offset(-10);
            make.bottom.equalTo(self).offset(-10);
        }];
        
        self.mStatusIv = [[UIImageView alloc] init];
        [self.mMainVw addSubview:self.mStatusIv];
        
        [self.mStatusIv makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self.mMainVw).offset(15);
            make.left.equalTo(self.mMainVw).offset(10);
            make.width.equalTo(@15);
            make.height.equalTo(@15);
        }];
        
        self.mDeviceStatus = [[UIImageView alloc] init];
        [self.mStatusIv addSubview:self.mDeviceStatus];
        
        [self.mDeviceStatus makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self.mStatusIv).offset(0);
            make.left.equalTo(self.mStatusIv).offset(20);
            make.width.equalTo(@15);
            make.height.equalTo(@15);
        }];
        
        self.mBatteryStatus = [[UIImageView alloc] init];
        [self.mDeviceStatus addSubview:self.mBatteryStatus];
        
        [self.mBatteryStatus makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self.mDeviceStatus).offset(0);
            make.left.equalTo(self.mDeviceStatus).offset(20);
            make.width.equalTo(@15);
            make.height.equalTo(@15);
        }];
        
        self.mFanStatus = [[UIImageView alloc] init];
               [self.mBatteryStatus addSubview:self.mFanStatus];
               
               [self.mFanStatus makeConstraints:^(MASConstraintMaker *make){
                   make.top.equalTo(self.mBatteryStatus).offset(0);
                   make.left.equalTo(self.mBatteryStatus).offset(20);
                   make.width.equalTo(@15);
                   make.height.equalTo(@15);
               }];
        
        
        self.mDeviceNameLb = [[UILabel alloc] init];
        self.mDeviceNameLb.textColor = [UIColor blackColor];
        self.mDeviceNameLb.font = [UIFont fontWithName:@"Helvetica-Bold" size:23];
        self.mDeviceNameLb.textAlignment = NSTextAlignmentCenter;
        [self.mMainVw addSubview:self.mDeviceNameLb];
        
        [self.mDeviceNameLb makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self.mMainVw).offset(30);
            make.left.equalTo(self.mMainVw).offset(0);
            make.right.equalTo(self.mMainVw).offset(-10);
            make.height.equalTo(@30);
        }];
        
        self.mConentMqtt = [[UILabel alloc] init];
        self.mConentMqtt.textColor = [UIColor blackColor];
        self.mConentMqtt.font = [UIFont fontWithName:@"Helvetica-Bold" size:16];
        self.mConentMqtt.textAlignment = NSTextAlignmentCenter;
        [self.mMainVw addSubview:self.mConentMqtt];
        
        [self.mConentMqtt makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self.mDeviceNameLb).offset(10);
            make.left.equalTo(self.mMainVw).offset(135);
            make.right.equalTo(self.mMainVw).offset(0);
            make.height.equalTo(@30);
        }];
        
        self.mDeviceAddreLb = [[UILabel alloc] init];
        self.mDeviceAddreLb.textColor = [UIColor grayColor];
        self.mDeviceAddreLb.font = [UIFont fontWithName:@"Helvetica" size:15];
        self.mDeviceAddreLb.textAlignment = NSTextAlignmentCenter;
        [self.mMainVw addSubview:self.mDeviceAddreLb];
        
        [self.mDeviceAddreLb makeConstraints:^(MASConstraintMaker *make){
            make.top.equalTo(self.mDeviceNameLb).offset(40);
            make.left.equalTo(self.mMainVw).offset(0);
            make.right.equalTo(self.mMainVw).offset(-10);
            make.height.equalTo(@30);
        }];
    }
    
    return self;
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
    
    // Configure the view for the selected state
}

@end

5.HomeManager.h（接口的定义）

#import 
#import "BaseManager.h"
#import "NSError+YJPError.h"
#import "Constants.h"
#import "PPNetworkHelper.h"
#import "DeviceModel.h"

@protocol HomeManagerDelegate 

//Get All Devices
- (void)getDevices:(NSArray*_Nullable) resultes;

- (void)getDevicesFail:(NSString*_Nullable) result;

@end


NS_ASSUME_NONNULL_BEGIN

@interface HomeManager : BaseManager

@property(weak,nonatomic) id delegate;

/**
    Get All Devices
 */
-(void)getDevices;

@end

NS_ASSUME_NONNULL_END

6.HomeManager.m

#import "HomeManager.h"

@implementation HomeManager

/**
    Get All Devices
 */
-(void)getDevices{
     NSString *strUrl = [NSString stringWithFormat:@"%@devices",@“www.baidu.com/device”];
     NSDictionary *params = @{
                              @"args":@"get_devices",
                              @"registryId":BASE_REGISTRY,
                              @"cloudRegion":BASE_CREGION,
                              };
    //HTTP+JSON
    [PPNetworkHelper setRequestSerializer:PPRequestSerializerHTTP];
    [PPNetworkHelper setResponseSerializer:PPResponseSerializerJSON];
    
    [PPNetworkHelper GET:strUrl parameters:params success:^(id responseObject){
        DeviceModel *model = [DeviceModel mj_objectWithKeyValues:responseObject];
        if(model.data.count>0){
            if([self.delegate respondsToSelector:@selector(getDevices:)]){
                [self.delegate getDevices:model.data];
            }
        }else{
            if([self.delegate respondsToSelector:@selector(getDevicesFail:)]){
                [self.delegate getDevicesFail:@"Get Devices Fail!"];
            }
        }
    } failure:^(NSError *error){
        NSLog(@"erro----+%@",error);
       NSError *newError = [NSError returnErrorWithError:error];
        if([self.delegate respondsToSelector:@selector(getDevicesFail:)]){
            [self.delegate getDevicesFail:newError.localizedDescription];
        }
    }];
}

@end

7.HomeViewController.h

#import 
#import "BaseViewController.h"
#import "MeViewController.h"
#import "HomeView.h"
#import "HomeViewCell.h"
#import "HomeManager.h"
#import "BTAlertController.h"
#import "AddDeviceView.h"
#import "CommonDefaults.h"

NS_ASSUME_NONNULL_BEGIN

@interface HomeViewController : BaseViewController

@end

NS_ASSUME_NONNULL_END

8.HomeViewController.m

#import "HomeViewController.h"
#import "BleViewController.h"
#import "MJRefresh.h"
#import "MBProgressHUD.h"
#import "WHToast.h"

#define CELLIDENTIFITER "HOMETABLEVIEWCELL"

@interface HomeViewController (){
    MBProgressHUD *hud;
}

@property(nonatomic,strong) HomeView *homeView;

@property(nonatomic,strong) HomeManager *homeManager;

@property(nonatomic,strong) AddDeviceView *addDevice;

@property(strong, nonatomic) NSMutableArray *deviceList;


@end

@implementation HomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];
}

/*
    程序加载的时候调用
 */
- (void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];
    if(_deviceList.count>0){
        //重新加载数据
        [_deviceList removeAllObjects];
    }
    [self showHud];
    //program run get devices
    [self.homeManager getDevices];
}

-(void)customContentView{
    UIColor *commonBlue = [self.cmUtil stringToColor:@"#333333"];
    [self.navigationController.navigationBar setBarTintColor:commonBlue];
    self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
    self.navigationItem.title = @"Reading";
}

-(void)customNavigationRightItem{
    UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"me"] style:UIBarButtonItemStylePlain target:self action:@selector(onMeClick)];
    item.tintColor = [UIColor whiteColor];
    self.navigationItem.rightBarButtonItem = item;
}

- (void)customNavigationLeftItem{
    UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"blue"] style:UIBarButtonItemStylePlain target:self action:@selector(onAddClick)];
    item.tintColor = [UIColor whiteColor];
    self.navigationItem.leftBarButtonItem = item;
}

/*
    display loading...
 */
-(void)showHud{
    hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
    hud.bezelView.style = MBProgressHUDBackgroundStyleSolidColor;
    hud.bezelView.color = [[UIColor  blackColor] colorWithAlphaComponent:0.7];
    hud.label.text = NSLocalizedString(@"Data Loading...", @"HUD loading title");
    hud.contentColor = [UIColor whiteColor];
    //正常情况下是20秒后消失
    [hud hideAnimated:YES afterDelay:20.0f];
}

/**
    hide loading...
 */
-(void)hideHud{
    [hud hideAnimated:YES afterDelay:0.5f];
}

-(void)initData{
 
    UIView *view = [[UIView alloc] init];
    self.homeView.tableView.tableFooterView = view;
    
    self.homeView.frame = self.view.bounds;
    [self.view addSubview:self.homeView];
    
    [self setUpRefresh];
}

- (void)setUpRefresh{
    __weak __typeof(self) weakSelf = self;
    self.homeView.tableView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
        [weakSelf loadRefData];
    }];
    
    //self.homeView.tableView.mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingTarget:self refreshingAction:@selector(loadMoreData)];
}

-(void)loadRefData{
    if(self.deviceList.count>0){
        [self.deviceList removeAllObjects];
    }
    //[self.homeView.tableView reloadData];
    [self.homeManager getDevices];
}

-(void)loadMoreData{
    [self loadRefData];
}


-(void) onMeClick{
    MeViewController * me = [[MeViewController alloc]init];
    me.title = @"Me";
    [self.navigationController pushViewController:me animated:YES];
}

-(HomeView*)homeView{
    if(!_homeView){
        _homeView = [[HomeView alloc] init];
        _homeView.tableView.delegate = (id)self;
        _homeView.tableView.dataSource = (id)self;
        _homeView.delegate = (id)self;
    }
    return _homeView;
}

-(void) onAddClick{
    BleViewController *ble = [[BleViewController alloc] init];
    [self.navigationController pushViewController:ble animated:YES];
}


-(HomeManager*)homeManager{
    if(_homeManager==nil){
        _homeManager = [[HomeManager alloc] init];
        _homeManager.delegate = (id)self;
    }
    return _homeManager;
}

-(NSMutableArray*)deviceList{
    if(!_deviceList){
        _deviceList = [[NSMutableArray alloc] init];
    }
    return _deviceList;
}


//点击按钮添加设备
-(void)homeAddDevice{
    _addDevice = [[AddDeviceView alloc] init];
       _addDevice.commonTf.delegate = self;
       __weak __typeof(self) weakSelf = self;
       _addDevice.commonTf.text = @"xxxx";
       //确定的时候
       [_addDevice setSureBolck:^(BOOL clickStatu) {
           NSString *name = weakSelf.addDevice.commonTf.text;
           //执行发送数据
           if(![name isEqualToString:@""]&&name!=nil){
               [weakSelf showHud];
               [weakSelf.homeManager addDevice:name];
            }else{
                [WHToast showMessage:@"Input not empty" originY:500 duration:2 finishHandler:^{
                }];
            }
       }];
}

#pragma mark HomeViewDelegate

-(void)onClick{
    [self homeAddDevice];
}


#pragma mark HomeManagerDelegate

//Get All Devices
- (void)getDevices:(NSArray*_Nullable) resultes{
    [self.homeView.tableView.mj_header endRefreshing];
    [self hideHud];
    if(resultes.count>0){
        self.deviceList = [NSMutableArray arrayWithArray:resultes];
        [self.homeView.tableView reloadData];
    }
}

- (void)getDevicesFail:(NSString*_Nullable) result{
    [self.homeView.tableView.mj_header endRefreshing];
    [self hideHud];
    [WHToast showMessage:result originY:500 duration:2 finishHandler:^{
    }];
}


//Add Device
-(void)addDevice:(DeviceModel* _Nullable) result{
    //[self.homeView.tableView.mj_header endRefreshing];
    [self hideHud];
    //如果添加成功
    if(result!=nil){
        NSString *allkey = [NSString stringWithFormat:@"%@%@",PRIVATE_KEY,result.deviceId];
        //存储privteKey
        [[CommonDefaults shared] saveValue:result.privateKey forKey:allkey];
        //开启
        [self showHud];
        //绑定设备
        [self.homeManager bindDeviceMqtt:result.deviceId privateKey:result.privateKey];
    }
}

-(void)addDeviceFail:(NSString *_Nullable) result{
    [self hideHud];
    [WHToast showMessage:result originY:500 duration:2 finishHandler:^{
    }];
}

#pragma mark UITableView

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 130;
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return _deviceList.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    HomeViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@CELLIDENTIFITER];
    
    if (cell == nil) {
        cell = [[HomeViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                   reuseIdentifier:@CELLIDENTIFITER];
        [cell setSelectionStyle:UITableViewCellSelectionStyleNone];
    }
    
    if([_deviceList count]>0){
        Device *model = [_deviceList objectAtIndex:indexPath.row];
        cell.mDeviceNameLb.text = model.deviceId;
        cell.mStatusIv.image=[UIImage imageNamed:@"nonet"];
        cell.mDeviceStatus.image=[UIImage imageNamed:@"device_nonet"];
        cell.mBatteryStatus.image=[UIImage imageNamed:@"battery"];
        cell.mFanStatus.image=[UIImage imageNamed:@"fan"];
        cell.mDeviceAddreLb.text = model.numId;
        //信号值 需要去修改
    }
   
    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    HomeViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@CELLIDENTIFITER];
       
    if (cell == nil) {
        cell = [[HomeViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                    reuseIdentifier:@CELLIDENTIFITER];
        [cell setSelectionStyle:UITableViewCellSelectionStyleNone];
    } 
}

//用完之后需要关闭掉
-(void)viewDidDisappear:(BOOL)animated{
    [super viewDidDisappear:animated];
}

#pragma mark KeyBoard

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [self.addDevice.commonTf resignFirstResponder];
    return YES;
    
}

//点击空白处让键盘隐藏起来
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    [self.addDevice.commonTf resignFirstResponder];
}


@end

三：最终效果图IOS实现：

源码APP项目