使用UIWebview调用如何知道点击了UIAlertView的哪个按钮Index

Question

我能够生成警报，允许用户使用 UIWebView 和以下代码拨打电话：

UIWebView *webV= [[UIWebView alloc] init];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"tel:1834563578"]];
[webV loadRequest:request];

但是，当我使用 UIWebView 进行调用时，系统会出现提示。我想知道用户选择了哪个按钮索引。我不知道如何检索用户在警报中选择的选项的索引。

Answer 1

Use The following Code.

UIAlertAction* cameraButton = [UIAlertAction
                               actionWithTitle:@"Button1"
                               style:UIAlertActionStyleDestructive
                               handler:^(UIAlertAction * action) {

                                   // do somethingg

                               }];

UIAlertAction *cancelButton = [UIAlertAction
                               actionWithTitle:@"Cancel"
                               style:UIAlertActionStyleCancel
                               handler:^(UIAlertAction * action) {
                                   //do nothing
                               }];






[alert addAction:cameraButton];
[alert addAction:cancelButton];
[self presentViewController:alert animated:YES completion:nil];

Answer 2

仅供 iOS10+.

您可以在 UIWebViewDelegate 中检测到呼叫：

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
    if ([request.URL.absoluteString hasPrefix:@"tel:"]) {
        // make a call

        // this method is available in iOS10
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneNumber] 
                                           options:nil 
                                           completionHandler:^(BOOL success) {
            // if success is NO, user tap cancel button, or other
            NSLog(@"%d", success);
        }];

        return NO; // the default view will not show
    }
    return YES;
}

设置UIWebView:

UIWebView *webV= [[UIWebView alloc] init];
webV.delegate = self;
NSURLRequest *request = [NSURLRequest requestWithURL: [NSURL URLWithString:@"tel:1834563578"]];
[webV loadRequest: request];

通过这个，你会知道点击了哪个按钮取决于在 success 在 completionHandler.

使用UIWebview调用如何知道点击了UIAlertView的哪个按钮Index

How can I know which button Index of UIAlertView is clicked when I use UIWebview to make a call

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