iOS支付宝、微信、银联支付集成封装调用（下）

一.越来越多的app增加第三方的功能，可能app有不同的页面但调用相同的支付方式，例如界面如下：

这两个页面都会使用第三方支付支付：（微信，支付宝，银联）如果在每一个页面都直接调用第三方支付的接口全部代码，显然并不是很合适，更何况，可能一个app并不止两个入口。所以封装还是很有必要的。

1.新建model：-------后台返回支付方式的列表json

#import <foundation/foundation.h>

@interface ioapayitemmodel : nsobject

//name:代表是支付宝，微信，银联或者余额等
@property (nonatomic, copy) nsstring *name;
//icon:代表是支付方式的图片
@property (nonatomic, copy) nsstring *icon;
//code:代表支付方式的唯一标识
@property (nonatomic, copy) nsstring *code;
//paytype:代表支付类型（自己确定的）
@property (nonatomic, assign) nsinteger paytype;
@end

#import "ioapayitemmodel.h"
@implementation ioapayitemmodel
@end

2.封装第三方支付接口以及回调接口-----直接上源代码----会有解释（相信大家的能力，肯定能看懂）

#import <foundation/foundation.h>
//支付宝sdk
#import <alipaysdk/alipaysdk.h>
//微信接口
#import <wxapi.h>
//银联接口
#import "uppaymentcontrol.h"

/**
 枚举：列出第三方支付方式
 */
typedef ns_enum(nsinteger, paytype) {
 kpaytypewxpay, // 微信支付
 kpaytypealipay, // 支付宝支付
 kpaytypeunpay // 银联支付
};


/**
 ioapayrequestmodel:第三方支付需要的参数
 */
@interface ioapayrequestmodel: nsobject
@property (nonatomic, assign) paytype paytype;

/**
 支付宝和银联-后台返回是字符串类型----支付宝和银联使用此方式
 */
@property (nonatomic, copy) nsstring *paystring;
@property (nonatomic, copy) nsstring *appscheme; // 根据设置的paytype设置

/**
 微信-后台返回是字典类型--- 微信使用此方式
 */
@property (nonatomic, strong) nsdictionary *userinfo;
@end


/**
 第三方支付接口返回的数据---
 */
@interface ioapayresponsemodel: nsobject
@property (nonatomic, assign) paytype paytype;

//result和userinfo信息判断支付结果--（支付成功、支付失败、支付取消等）
@property (nonatomic, assign) nsinteger result;
@property (nonatomic, strong) nsdictionary *userinfo;
@end

@interface ioapayapi : nsobject

//支付返回的回调方法
@property (nonatomic, copy) void (^callback)(ioapayresponsemodel *response);

//支付请求model ----ioapayrequestmodel---第三方支付需要的参数
@property (nonatomic, strong) ioapayrequestmodel *payrequestmodel;

//单例方法
+ (instancetype)defaultpaymanager;

// 是否安装了客户端
- (bool)ispayappinstalled:(paytype)paytype;
// 支付
- (void)pay:(ioapayrequestmodel *)payrequestmodel callback:(void (^)(ioapayresponsemodel *response))callback;

// 支付回调
- (void)paycallbackwithurl:(nsurl *)url;
@end

#import "ioapayapi.h"

@implementation ioapayrequestmodel

- (void)setpaytype:(paytype)paytype {
 _paytype = paytype;
 if (_paytype == kpaytypealipay) {
 self.appscheme = @"ioaalipaysdk";
 // 测试
// self.paystring = @"alipay_sdk=1.0&app_id=2018012502067343&biz_content=%7b%22subject%22%3a%22%e6%94%af%e4%bb%98%e5%ae%9d%e6%94%af%e4%bb%98%22%2c%22out_trade_no%22%3a%222018032100007%22%2c%22total_amount%22%3a%220.01%22%2c%22product_code%22%3a%22quick_msecurity_pay%22%2c%22timeout_express%22%3a%2210m%22%2c%22seller_id%22%3a%222088001065568658%22%7d&charset=utf-8&format=json&method=alipay.trade.app.pay¬ify_url=api.ioa365.net%2fapp%2fapi%2fpayment%2falipay_notify&sign_type=rsa2×tamp=2018-03-21+16%3a59%3a15&version=1.0&sign=sfyiwfqdkg98qarjfkfnjts8w2rs7atwjcrynnkyildavvfenr%2f943qjk9wfazgipx38rzurf%2bl4m74hp2po%2f%2f0zfskanttu3dmlivgt4yd42w1f2lop3ixtkl5bhppzt6yfdquecz1zreeawqxlybdvvnjbj9p67f2jt8jfqm6enz6kwwy5cshydd6ijqf0fkxdmsya%2bico6iihdiqksrlhubpb8lfsxjyy1%2fbaauysib3%2biu6hwasugadcvl769ivwhkwdjzqzuofpjcfnneyzg3%2b4f%2fnlbry1pkk3zwy2uqpttk0w0gofsf167drz47j0lw7uufym8ua%2bihz7lw%3d%3d";

 return;
 }

 if (_paytype == kpaytypeunpay) {
 self.appscheme = @"uppay";

 // 测试
// self.paystring = @"559018436594292239101";

 return;
 }

 // 测试
// self.userinfo = @{
//     @"appid":@"wx66a3135d1354b23b",
//     @"noncestr":@"j8pjbaeg6ajdq9kk",
//     @"partnerid":@"1497576612",
//     @"prepayid":@"wx20180321170621b3fbce61a20187009040",
//     @"result_code":@"success",
//     @"return_code":@"success",
//     @"return_msg":@"ok",
//     @"sign":@"29fff7b63a71d3fb4c6866bdbc443f72",
//     @"timestamp":@"1521623180",
//     @"trade_type":@"app",
//     };
}
@end

@implementation ioapayresponsemodel

@end

@interface ioapayapi() <wxapidelegate>

@end

@implementation ioapayapi

//单例方法
static ioapayapi *manager = nil;
+ (instancetype)defaultpaymanager {
 static dispatch_once_t oncetoken;
 dispatch_once(&oncetoken, ^{
 manager = [ioapayapi new];
 });
 return manager;
}

+ (instancetype)allocwithzone:(struct _nszone *)zone {
 static dispatch_once_t oncetoken;
 dispatch_once(&oncetoken, ^{
 manager = [super allocwithzone:zone];
 });

 return manager;
}

//copy在底层 会调用copywithzone:
- (instancetype)copywithzone:(nszone *)zone {
 return [[self class] defaultpaymanager];
}
+ (instancetype)copywithzone:(struct _nszone *)zone {
 return [self defaultpaymanager];
}
+ (instancetype)mutablecopywithzone:(struct _nszone *)zone {
 return [self defaultpaymanager];
}
- (instancetype)mutablecopywithzone:(nszone *)zone {
 return [[self class] defaultpaymanager];
}

#pragma mark - weichatpaydelegate
- (void)onresp:(baseresp *)resp {
 //启动微信支付的response
 if (self.payrequestmodel.paytype == kpaytypewxpay) {
 if (self.callback) {
  ioapayresponsemodel *payresponsemodel = [ioapayresponsemodel new];
  payresponsemodel.result = 0;
  if([resp iskindofclass:[payresp class]]){
  //支付返回结果，实际支付结果需要去微信服务器端查询
  switch (resp.errcode) {
   case 0:
//   payresoult = @"支付结果：成功！";
   payresponsemodel.result = 1;
   break;
   case -1:
   payresponsemodel.result = 0;
   break;
   case -2:
   payresponsemodel.result = 0;
   break;
   default:
   break;
  }
  }

  self.callback(payresponsemodel);
 }
 }
}

#pragma mark - public

// 是否安装了客户端
- (bool)ispayappinstalled:(paytype)paytype {
 switch (paytype) {
 case kpaytypewxpay:
  return [wxapi iswxappinstalled];
  break;

 case kpaytypealipay:
  // 未提供接口 返回no
  return no;
  break;
 case kpaytypeunpay:
  return [[uppaymentcontrol defaultcontrol] ispaymentappinstalled];
  break;
 default:
  break;
 }

 return no;
}

- (void)pay:(ioapayrequestmodel *)payrequestmodel callback:(void (^)(ioapayresponsemodel *response))callback {
 if (!payrequestmodel) return;
 self.callback = callback;
 self.payrequestmodel = payrequestmodel;

 switch (payrequestmodel.paytype) {
 case kpaytypewxpay:
  [self wxpay:payrequestmodel];
  break;

 case kpaytypealipay:
  [self alipay:payrequestmodel];
  break;
 case kpaytypeunpay:
  [self unpay:payrequestmodel];
  break;
 default:
  break;
 }
}

// 支付回调
- (void)paycallbackwithurl:(nsurl *)url {
 // 其他如支付等sdk的回调
 if ([url.host isequaltostring:@"safepay"]) {
 [self alipaycallback:url];
 }
 else if ([url.host isequaltostring:@"pay"]) {
 // 处理微信的支付结果
 [self wxpaycallback:url];
 }
 else if ([url.host isequaltostring:@"uppayresult"]) {
 [self unpaycallback:url];
 }
}

#pragma mark - pay

// 微信支付
- (void)wxpay:(ioapayrequestmodel *)payrequestmodel {
 payreq *req = [[payreq alloc] init];
 nsdictionary *datadic = payrequestmodel.userinfo;
 //由用户微信号和appid组成的唯一标识，用于校验微信用户
 req.openid = datadic[@"appid"];
 // 商家id，在注册的时候给的
 req.partnerid = datadic[@"partnerid"];
 // 预支付订单这个是后台跟微信服务器交互后，微信服务器传给你们服务器的，你们服务器再传给你
 req.prepayid = datadic[@"prepayid"];
 // 根据财付通文档填写的数据和签名
 req.package = @"sign=wxpay";
 // 随机编码，为了防止重复的，在后台生成
 req.noncestr = datadic[@"noncestr"];
 // 这个是时间戳，也是在后台生成的，为了验证支付的
 nsstring * stamp = datadic[@"timestamp"];
 req.timestamp = stamp.intvalue;
 // 这个签名也是后台做的
 req.sign = datadic[@"sign"];
 //发送请求到微信，等待微信返回onresp
 [wxapi sendreq:req];
}

// 支付宝
- (void)alipay:(ioapayrequestmodel *)payrequestmodel {
 nsstring *appscheme = payrequestmodel.appscheme;
 nsstring *paystring = payrequestmodel.paystring;

 __weak __typeof(self)weakself = self;
 [[alipaysdk defaultservice] payorder:paystring fromscheme:appscheme callback:^(nsdictionary *resultdic) {
 if (weakself.payrequestmodel.paytype == kpaytypealipay) {
  if (weakself.callback) {
  ioapayresponsemodel *payresponsemodel = [ioapayresponsemodel new];
  payresponsemodel.userinfo = resultdic;
  payresponsemodel.result = [resultdic[@"result"] integervalue];
  weakself.callback(payresponsemodel);
  }
 }
 }];
}

// 银联支付
- (void)unpay:(ioapayrequestmodel *)payrequestmodel {
 nsstring *appscheme = payrequestmodel.appscheme;
 nsstring *paystring = payrequestmodel.paystring;
 [[uppaymentcontrol defaultcontrol] startpay:paystring fromscheme:appscheme mode:@"01" viewcontroller:[uiapplication sharedapplication].keywindow.rootviewcontroller];
}

//////
- (void)wxpaycallback:(nsurl *)url {
 //跳转支付宝钱包进行支付，处理支付结果
 [wxapi handleopenurl:url delegate:self];
}

- (void)alipaycallback:(nsurl *)url {
 __weak typeof(self)weakself = self;
 [[alipaysdk defaultservice] processorderwithpaymentresult:url standbycallback:^(nsdictionary *resultdic) {
 if (weakself.payrequestmodel.paytype == kpaytypealipay) {
  if (weakself.callback) {
  ioapayresponsemodel *payresponsemodel = [ioapayresponsemodel new];
  payresponsemodel.userinfo = resultdic;
  payresponsemodel.result = [resultdic[@"result"] integervalue];
  weakself.callback(payresponsemodel);
  }
 }
 }];
}

- (void)unpaycallback:(nsurl *)url {
 __weak typeof(self)weakself = self;
 [[uppaymentcontrol defaultcontrol]handlepaymentresult:url completeblock:^(nsstring *code, nsdictionary *data) {
 if (weakself.payrequestmodel.paytype == kpaytypeunpay) {
  if (weakself.callback) {
  ioapayresponsemodel *payresponsemodel = [ioapayresponsemodel new];
  payresponsemodel.userinfo = data;
  if ([code isequaltostring:@"success"]) {
   [[nsnotificationcenter defaultcenter] postnotificationname:@"yinlianpays" object:nil];
   payresponsemodel.result = [code boolvalue];
  }
  else if([code isequaltostring:@"fail"]) {
   //交易失败
   [[nsnotificationcenter defaultcenter] postnotificationname:@"yinlianpayf" object:nil];
   payresponsemodel.result = [code boolvalue];
  }
  else if([code isequaltostring:@"cancel"]) {
   //交易取消
   [[nsnotificationcenter defaultcenter] postnotificationname:@"yinlianpayc" object:nil];
   payresponsemodel.result = 0;
  }

  weakself.callback(payresponsemodel);
  }
 }
 }];
}
@end

3.此时方法就开始封装好了，可以在需要的地方直接使用（弹框已作出）

- (void)alipay{
 [self startprogress];
 self.requestmodel.pay_type = @"alipaymobile";
 //自己后台的接口---拿到后台返回的数据作为第三方接口的参数
 [self.viewmodel requestcartsettlepay:self.requestmodel callback:^(ioaresponse *response) {
 dispatch_async(dispatch_get_main_queue(), ^{
  [self stopprogress];
  if (response.success) {
  nsstring *appscheme = @"ioaalipaysdk";
  self.payrequestmodel.paystring = response.responseobject;
  self.payrequestmodel.paytype = 1;
  self.payrequestmodel.appscheme = appscheme;
  //第三方接口调用（封装）
  [[ioapayapi defaultpaymanager] pay:self.payrequestmodel callback:^(ioapayresponsemodel *response) {
   dispatch_async(dispatch_get_main_queue(), ^{
   nsdictionary *userinfo = response.userinfo;
   if (![userinfo[@"resultstatus"] isequaltostring:@"9000"]) {
    //进入待付款界面(支付失败或者支付取消等)
    [self pushwait];
   }else{
    //进入订单列表界面（支付成功）
    [self pushlist];
   }
   });
  }];
  }else{
  [self.view maketoast:@"支付失败"];
  }
 });
 }];
}

4.重磅来临（一些人弹框没有作出，可以直接拷贝下面代码）

新建控制器控制弹框.h文件中

#import <uikit/uikit.h>

#import "ioapayapi.h"
#import "ioapayitemmodel.h"

@interface ioapayviewcontroller : uiviewcontroller
//点击第几行回调声明
@property (nonatomic, copy) void (^clickcallback)(nsinteger atindex);

+ (instancetype)show;
//block回调方法
+ (instancetype)show:(void (^)(nsinteger atindex))clickcallback;
+ (void)dismiss;

- (void)setupitemtitles:(nsarray <nsstring *>*)titles;
- (void)setupitems:(nsarray <ioapayitemmodel *>*)items;

- (void)setuptitle:(nsstring *)title;
@end

实现其方法.m文件中

#import "ioapayviewcontroller.h"

#define paycellheight 50
#define paysectionheaderheight 44

@interface ioapayviewcontroller () <uitableviewdatasource, uitableviewdelegate>
@property (nonatomic, strong) calayer *masklayer;

@property (nonatomic, strong) uilabel *titleview;
@property (nonatomic, strong) uiview *paybgview;
@property (nonatomic, strong) uitableview *tableview;
@property (nonatomic, strong) nsmutablearray *datasources;

@property (nonatomic, assign) cgfloat payviewheight;

- (void)showpayview;
- (void)dismisspayview;
@end

@implementation ioapayviewcontroller

- (void)dealloc {

}

+ (instancetype)show {
 uiviewcontroller *rootvc = [uiapplication sharedapplication].keywindow.rootviewcontroller;

 ioapayviewcontroller *vc = [ioapayviewcontroller new];
 [rootvc addchildviewcontroller:vc];
 [rootvc.view addsubview:vc.view];

 [vc setupitemtitles:@[@"微信支付", @"支付宝支付", @"银联支付"]];
 [vc showpayview];
 return vc;
}

+ (instancetype)show:(void (^)(nsinteger atindex))clickcallback {
 ioapayviewcontroller *vc = [self show];
 vc.clickcallback = clickcallback;

 return vc;
}

+ (void)dismiss {
 uiviewcontroller *rootvc = [uiapplication sharedapplication].keywindow.rootviewcontroller;
 for (uiviewcontroller *vc in rootvc.childviewcontrollers) {
 if ([vc iskindofclass:[ioapayviewcontroller class]]) {
  ioapayviewcontroller *tempvc = (ioapayviewcontroller *)vc;
  [tempvc dismisspayview];
  return;
 }
 }
}

- (void)viewdidload {
 [super viewdidload];
 self.view.backgroundcolor = [uicolor clearcolor];

 self.masklayer.frame = self.view.bounds;
 [self.view.layer addsublayer:self.masklayer];

 [self.view addsubview:self.paybgview];
// [self.view addsubview:self.tableview];
}

- (void)didreceivememorywarning {
 [super didreceivememorywarning];
 // dispose of any resources that can be recreated.
}

#pragma mark - uitableviewdatasource
- (nsinteger )numberofsectionsintableview:(uitableview *)tableview {
 return 1;
}

- (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {
 return self.datasources.count;
}

- (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {

 uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:@"cell" forindexpath:indexpath];
 id temp = self.datasources[indexpath.row];
 if ([temp iskindofclass:[nsstring class]]) {
 cell.textlabel.text = temp;
 }
 else {
 ioapayitemmodel *item = temp;
 cell.textlabel.text = item.name;
 }
 cell.textlabel.font = [uifont systemfontofsize:18];
 cell.textlabel.textcolor = rgb_hexstring(@"#323232");
 cell.selectionstyle = uitableviewcellselectionstylenone;

 return cell;
}

#pragma mark - uitableviewdelegate
- (cgfloat)tableview:(uitableview *)tableview heightforrowatindexpath:(nsindexpath *)indexpath {
 return paycellheight;
}

- (uiview *)tableview:(uitableview *)tableview viewforheaderinsection:(nsinteger)section {
 return self.titleview;
}
- (cgfloat )tableview:(uitableview *)tableview heightforheaderinsection:(nsinteger)section {
 return paysectionheaderheight;
}

- (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath {
// ioapayrequestmodel *payrequestmodel = [ioapayrequestmodel new];
// payrequestmodel.paytype = indexpath.row;
//// ws(weakself);
//// __weak typeof (self)weakself = self;
// __block ioapayviewcontroller *payvc = self;
// [[ioapayapi defaultpaymanager] pay:payrequestmodel callback:^(ioapayresponsemodel *response) {
//// __strong __typeof (weakself)strongself = weakself;
// response.paytype = indexpath.row;
// if (payvc.clickcallback) {
//  payvc.clickcallback(response);
//  payvc = nil;
// }
// }];

 if (self.clickcallback) {
 self.clickcallback(indexpath.row);
 }

 [self dismisspayview];
}

#pragma mark - touches
- (void)touchesbegan:(nsset<uitouch *> *)touches withevent:(uievent *)event {
 [self dismisspayview];
}

#pragma mark - public
- (void)setupitemtitles:(nsarray<nsstring *> *)titles {
 if (!titles.count) {
 return ;
 }

 self.payviewheight = titles.count * paycellheight + paysectionheaderheight;
 cgrect frame = self.view.frame;
 frame.size.height = self.payviewheight;
 self.tableview.frame = frame;

 [self.datasources removeallobjects];
 [self.datasources addobjectsfromarray:titles];
 [self.tableview reloaddata];

 [self setpayviewframe];
}

- (void)setupitems:(nsarray <ioapayitemmodel *>*)items {
 if (!items.count) {
 return ;
 }

 for (ioapayitemmodel *item in items) {
 if ([item.code isequaltostring:@"appweixinpay"]) {
  item.paytype = 0;
  continue;
 }

 if ([item.code isequaltostring:@"alipaymobile"]) {
  item.paytype = 1;
  continue;
 }

 if ([item.code isequaltostring:@"unionpay"]) {
  item.paytype = 2;
  continue;
 }
 if ([item.code isequaltostring:@"ye"]) {
  item.paytype = 3;
  continue;
 }
 item.paytype = 3;
 }

 self.payviewheight = items.count * paycellheight + paysectionheaderheight;
 cgrect frame = self.view.frame;
 frame.size.height = self.payviewheight;
 self.tableview.frame = frame;
 [self.datasources removeallobjects];
 [self.datasources addobjectsfromarray:items];
 [self.tableview reloaddata];
 [self setpayviewframe];
}

- (void)setuptitle:(nsstring *)title {
 self.titleview.text = title;
}

#pragma mark - private
- (void)showpayview {
 [self.view.layer removeallanimations];
 cgfloat paybgviewheight = self.payviewheight + bottomheightoffset;
 cgrect frame = self.view.frame;
 frame.origin.y = self.view.frame.origin.y + self.view.frame.size.height;
 frame.size.height = paybgviewheight;
 self.paybgview.frame = frame;

 frame.origin.y = self.view.frame.size.height - paybgviewheight;
 [uiview animatewithduration:0.25 animations:^{
 self.paybgview.frame = frame;
 }];
}

- (void)setpayviewframe {
 cgfloat paybgviewheight = self.payviewheight + bottomheightoffset;
 cgrect frame = self.view.frame;
 frame.origin.y = self.view.frame.origin.y + self.view.frame.size.height;
 frame.size.height = paybgviewheight;
 frame.origin.y = self.view.frame.size.height - paybgviewheight;
 self.paybgview.frame = frame;
}

- (void)dismisspayview {
 cgfloat paybgviewheight = self.payviewheight + bottomheightoffset;

 cgrect frame = self.view.frame;
 frame.origin.y = self.view.frame.origin.y + self.view.frame.size.height;
 frame.size.height = paybgviewheight;

 [uiview animatewithduration:0.25 animations:^{
 self.paybgview.frame = frame;
 } completion:^(bool finished) {
 [self.view removefromsuperview];
 [self removefromparentviewcontroller];
 }];
}

#pragma mark - setter / getter
- (calayer *)masklayer {
 if (_masklayer == nil) {
 _masklayer = [calayer layer];
 _masklayer.backgroundcolor = [uicolor blackcolor].cgcolor;
 _masklayer.opacity = 0.2;
 }

 return _masklayer;
}

- (uilabel *)titleview {
 if (!_titleview) {
 _titleview = [uilabel new];
 _titleview.textalignment = nstextalignmentcenter;
 _titleview.text = @"请选择支付方式";
 _titleview.font = [uifont systemfontofsize:16];
 _titleview.textcolor = [uicolor blackcolor];
 _titleview.backgroundcolor = rgb_hexstring(@"#f2f2f2");//[uicolor whitecolor];
 }

 return _titleview;
}

- (uiview *)paybgview {
 if (!_paybgview) {
 _paybgview = [uiview new];
 _paybgview.backgroundcolor = [uicolor whitecolor];
 [_paybgview addsubview:self.tableview];
 }
 return _paybgview;
}

- (uitableview *)tableview{
 if (!_tableview) {
 _tableview = [[uitableview alloc]initwithframe:cgrectzero style:uitableviewstyleplain];
 _tableview.delegate = self;
 _tableview.datasource = self;
 _tableview.showsverticalscrollindicator = no;
 _tableview.showshorizontalscrollindicator = no;
 _tableview.separatorstyle = uitableviewcellseparatorstylesingleline;
 _tableview.separatorcolor = rgb_hexstring(@"#f2f2f2");
 if ([_tableview respondstoselector:@selector(setseparatorinset:)]) {
  [_tableview setseparatorinset:uiedgeinsetszero];
 }
 if ([_tableview respondstoselector:@selector(setlayoutmargins:)]) {
  [_tableview setlayoutmargins:uiedgeinsetszero];
 }

 //
 [_tableview registerclass:[uitableviewcell class] forcellreuseidentifier:@"cell"];
 }
 return _tableview;
}

- (nsmutablearray *)datasources {
 if (!_datasources) {
 _datasources = [nsmutablearray array];
 }
 return _datasources;
}

- (void)setpayviewheight:(cgfloat)payviewheight {
 _payviewheight = payviewheight;
 cgfloat height = self.view.frame.size.height * 0.6;
 self.tableview.scrollenabled = no;
 if (_payviewheight > height) {
 _payviewheight = height;
 self.tableview.scrollenabled = yes;
 }
}
@end

举例方法

利用请求的数据进行赋值传值。

ioaorderbasemodel *datasourcemodel = self.datasource[indexpath.section];
  ioaorderselectableitemmodel *itemmodel = (ioaorderselectableitemmodel *) datasourcemodel.items[row];
  ioapayviewcontroller *vc = [ioapayviewcontroller show:^(nsinteger atindex) {
  ioapayitemmodel *payitem = itemmodel.items[atindex];
  itemmodel.selectedindex = atindex;

  weakself.requestmodel.pay_type = payitem.code;
  weakself.payitem = payitem;

  [weakself.tableview reloadsections:[nsindexset indexsetwithindex:section] withrowanimation:uitableviewrowanimationnone];
  }];
  [vc setupitems:self.confirmorderinfo.payment_list];
  [vc setuptitle:@"请选择支付方式"];

最后的举例方法并不是所有的适用，对于上面1.2.3还是可以直接拿过去使用，这些都是原创，如果第一次接入还是希望各位读者读一下上篇文章，集成的整个过程，链接为http://www.zzvips.com/article/158561.html，这个代码的整个demo。

原文链接：https://www.cnblogs.com/guohai-stronger/p/8972502.html