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

return;
}

if (_payType == kPayTypeUNPay) {
self.appScheme = @"UPPay";

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

return;
}

// 测试
//    self.userInfo = @{
//                                 @"appid":@"",
//                                 @"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.cnblogs.com/guohai-stronger/p/8971508.html，这个代码的整个demo，我会尽快上传到github，谢谢！祝贺大家过一个愉快的劳动节！！！