iOS中京东支付

有的童鞋没弄过京东支付跑来问我，我们项目里有用到京东支付，于是自己写了个demo，代码贴在下面，希望能帮助到不会的童鞋。
1.新建一个继承Viewcontroller的JDViewcontroller

2. 在JDViewcontroller.h文件中，定义一个url属性，用来传url(废话)
@property (nonatomic, copy) NSString *urlStr;

3.在JDViewcontroller.m文件中，导入<JavaScriptCore/JavaScriptCore.h>框架，并定义一个成员变量webView

{
    UIWebView *_webView;
}

4.主要代码
- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.title = @"京东支付";
    self.view.backgroundColor = [UIColor whiteColor];
    [self initSubView];
}

- (void)initSubView {
//创建webView
    _webView = [UIWebView new];
    _webView.scrollView.bounces = NO;
    _webView.delegate = self;
    [self.view addSubview:_webView];
    _webView.frame = self.view.frame;
    
    NSURL *url = [NSURL URLWithString:[_urlStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [_webView loadRequest:request];
    
}

//delegate
- (void)webViewDidStartLoad:(UIWebView *)webView {

}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    NSLog(@"加载中,,");
    NSString *currentURL = webView.request.URL.absoluteString;
    NSString *theTitle = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
    NSLog(@"%@==", theTitle);
    
    NSRange range = [theTitle rangeOfString:@"支付的结果"];
    
    if (range.length > 0) {
        _webView = [UIWebView new];
        NSURL *url = [NSURL URLWithString:[currentURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]];
        NSURLRequest *request = [NSURLRequest requestWithURL:url];
        [_webView loadRequest:request];
        //固定格式，js与iOS交互
        JSContext *context = [_webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];
        context[@"jakilllog"] = ^() {
            NSString *type;
            NSLog(@"begin +++++++++++++");
            NSArray *args = [JSContext currentArguments];
            
            for (JSValue *jsVal in args) {
                NSLog(@"%@", jsVal);
                type = [NSString stringWithFormat:@"%@",jsVal];
            }
            
            JSValue *this = [JSContext currentThis];
            NSLog(@"this : %@", this);
            NSLog(@" end --------------");
            
            if ([type isEqualToString:@"success"]) {
                NSLog(@"success");
            }
        };
    }
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    return YES;
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {

}

在主Viewcontroller中导入JDViewController.h

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    //新建一个button，用来做点击事件
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
    btn.frame = CGRectMake(80, 180, 180, 30);
    [btn setTitle:@"点击进行京东支付" forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(ttt:) forControlEvents:UIControlEventTouchUpInside];
    btn.backgroundColor = [UIColor redColor];
    [self.view addSubview:btn];
 }

//点击事件
- (void)ttt:(UIButton *)btn {
    NSLog(@"点击进行京东支付");
    [self jdPay];
}

//支付

- (void)jdPay {
    NSString *userid = @"你的ID";
    NSString *money = @"0.15
![Simulator Screen Shot 2016年6月20日 14.32.54.png](https://img.haomeiwen.com/i1903176/b2c81ed5e8412b3a.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)";
//具体根据你们后台的参数来设置
    NSDictionary *dic = [[NSDictionary alloc] initWithObjectsAndKeys:userid,@"linkTel",@"付款",@"body",money,@"actualAmount",userid,@"userId",@"1",@"deviceType", nil];

//创建对象
  JDViewController *jd  = [JDViewController new];

//拼接url
  NSString *url = [NSString stringWithFormat:@"{\"linkTel\":\"%@\",\"body\":\"支付名称\",\"actualAmount\":\"%@\",\"deviceType\":\"1\",\"userId\":\"%@\"}", dic[@"linkTel"], dic[@"actualAmount"], dic[@"userId"]];

   jd.urlStr = [NSString stringWithFormat:@"%@%@", @"你们后台接口地址message=",url];

   //跳转
   [self.navigationController pushViewController:jd animated:YES];
}

结果图如下

Simulator Screen Shot 2016年6月20日 14.32.54.png 59724001-2E9A-4D96-884B-462ED953BA32.png

好啦，如果你喜欢的话，请点个赞。