小编Bor*_*kyi的帖子

我试图了解方法调用方案的场景,确实/将会出现和消失.

我所做的是选择表格单元格(灰色高光),转到详细视图并返回并取消选择所选行(删除选定的单元格灰色).

这是我的方法:

-(void)viewDidAppear:(BOOL)animated {
    DLog(@"%@ did appear", self);
    [super viewDidAppear:animated];

    if (_isPushed) {
        [self.tableView deselectRowAtIndexPath:[self.tableView indexPathForSelectedRow] animated:YES];
        _isPushed=NO;
    }
}

-(void)viewWillAppear:(BOOL)animated {
    DLog(@"%@ will appear", self);
    [super viewWillAppear:animated];  //If I remove this super call , then it works fine and there is no delay in deselecting the table cell
}

-(void)viewWillDisappear:(BOOL)animated {
    DLog(@"%@ will disappear", self);
    [super viewWillDisappear:animated];
}

-(void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    _isPushed=YES;
}

所以,当我放断点时,流程如下:

没有超级电话:

在推动新VC的同时:

current viewWillDisappear    //makes sense
new viewWillAppear           //makes sense
current viewDidAppear         // …

任何人都可以解释为基于iOS的项目实现MVC vs MVVM与VIPER的真实场景.我正在寻找一些解释我们应该在哪里使用MVC,MVVM和VIPER的示例.

提前致谢.

我想在我的应用程序中打开一个whatsapp url.

let whatsAppUrl = NSURL(string: "whatsapp://send?text=Hello%2C%20World!")
if UIApplication.sharedApplication().canOpenURL(whatsAppUrl!) {
    UIApplication.sharedApplication().openURL(whatsAppUrl!)
}

我使用字典"LSApplicationQueriesSchemes"扩展我的info.plist并为whatsapp添加我的url方案.

<key>LSApplicationQueriesSchemes</key>
<dict>
    <key>Item 0</key>
    <string>whatsapp</string>
</dict>

如果我运行我的应用程序,我收到以下错误消息.

"This app is not allowed to query for scheme whatsapp"

我阅读了一些清理派生数据的解决方案并再次运行应用程序以解决此问题.但这对我没有帮助,对我的问题存在另一种解决方案吗？

我尝试使用从Web视图中获取javascript消息WKWebView。但是IOS控制台内部什么也没有出现...

我实现以下代码：

- (void) webView:(WKWebView *)webView didFailLoadWithError:(NSError *)error {
    self.webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height-20)];
    self.webView.backgroundColor = [UIColor whiteColor];

    self.webView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);

    self.webView.scrollView.delegate = self;
    [self.view addSubview:self.webView];

    // Setup WKUserContentController instance for injecting user script

    WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc]
         init];

    WKUserContentController* userController = [[WKUserContentController alloc]init];

    [userController addScriptMessageHandler: self name:@"notification"];
    configuration.userContentController = userController;

    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://example.com/test.php"]]];
}

- (void)userContentController:(WKUserContentController*)userContentController
      didReceiveScriptMessage:(WKScriptMessage*)message {
    NSLog(@"%@", message.body);
}

和HTML / JS：

<div id="test" onclick="test();">test</div>

<script type="text/javascript" src="jquery.js"></script> …