在IOS開發中,給webView新增一個輕掃手勢,就可以返回上一個網頁.

上程式碼

#import "CKCenterMenuVC.h"

@interface CKCenterMenuVC ()

@property(nonatomic,strong) NSURL *url;

@property(nonatomic,strong) UIWebView *web;

@end

@implementation CKCenterMenuVC

- (void)viewDidLoad {

    [superviewDidLoad];

    //登入狀態

    if ([Context

        [self loadWebView];

    };

    self.title = @"社群";

//建立webView

UIWebView *web = [[UIWebViewalloc] initWithFrame:self.view.bounds];

    web.scalesPageToFit = YES;

    web.height = kIphoneHeight - 108;

//新增一個輕掃手勢

UISwipeGestureRecognizer *swip = [[UISwipeGestureRecognizeralloc

    [web addGestureRecognizer:swip];

    self.web = web;

    [self.view addSubview:web];

}

/**

 *  返回上一個網頁

 */

- (void)back

{

    [self.web goBack];

}

/**

 *  載入一個網頁

 */

- (void)loadWebView{

//當前登入使用者

MDUser *user = [ContextsharedInstance

    NSDictionary *parameters = @{@"user_id":user.userId};

//請求資料

    [HttpTool postWithPath:@"/v20/main/moxi_index" params:parameters success:^(id json) {

        MyLog(@"%@",json);

        if ([json[@"status"] intValue] == 0) {

            NSDictionary *urlDict = json[@"data"];

            NSString *urlStr= urlDict[@"url"];

            self.url = [NSURL URLWithString:urlStr];

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:self.url];

            [self.web loadRequest:request];

        }

    } failure:^(NSError *error) {

        MyLog(@"%@",error);

    }];

}

@end