如何解决使用WKWebView目标C
基本上,我对AngularJS不太了解。我的任务是在WKWebView中加载网页。在该页面中,我必须预先填写用户名和密码,然后使用JavaScript以编程方式单击“登录”按钮。我已经使用JavaScript填充了用户名和密码字段。但是问题是当我通过执行javascript单击“登录”按钮时,它没有与服务器共享任何内容。这是我的表格:
<div class="container ng-scope" ng-controller="LogonController">
<div class="panel panel-default center">
<div class="panel-heading titletext" id="logo">
<img src="images\black.png">
</div>
<div class="panel-body">
<!-- ngRepeat: alert in alerts -->
<form class="form-horizontal center ng-pristine ng-valid" ng-submit="submitCredentials()">
<div class="control-group">
<label class="control-label" for="userId">User ID:</label>
<div class="controls">
<input type="text" id="useremail" ng-model="userId" autofocus="autofocus" class="ng-pristine ng-untouched ng-valid">
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputPassword">Password:</label>
<div class="controls">
<input type="password" id="userpassword" ng-model="password" class="ng-pristine ng-untouched ng-valid">
</div>
</div>
<div style="margin-top:5px"></div>
<div class="control-group">
<div class="controls">
<button type="submit" class="btn btn-default center"><img src="images/login2.png"> Sign in</button>
</div>
</div>
</form>
</div>
在iOS端,我编写了以下代码来执行Javascript:
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
NSLog(@"didFinishNavigation");
dispatch_after(dispatch_time(DISPATCH_TIME_NOW,1 * NSEC_PER_SEC),dispatch_get_main_queue(),^{
//NSLog(@"Function Called");
NSString *email = @"test";
NSString *password = @"test";
NSString *fillUser = [NSString stringWithFormat:@"document.getElementById('useremail').value='%@';",[email stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
NSString *fillPassword = [NSString stringWithFormat:@"document.getElementById('userpassword').value='%@';",[password stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
NSString *resultStringUser = [self stringByEvaluatingJavaScriptFromString:fillUser];
NSString *resultStringPassword = [self stringByEvaluatingJavaScriptFromString:fillPassword];
//NSLog(@"Result String For User is: %@ and Password: %@",resultStringUser,resultStringPassword);
});
dispatch_after(dispatch_time(DISPATCH_TIME_NOW,15 * NSEC_PER_SEC),^{
NSString *submitFunction = [NSString stringWithFormat:@"document.getElementsByClassName('btn btn-default center')[0].click();"];
NSString *resultStringSubmit = [self stringByEvaluatingJavaScriptFromString:submitFunction];
//NSLog(@"Result String for Submit is: %@",resultStringSubmit);
});
}
这是我的stringByEvaluatingJavaScriptFromString方法:
- (NSString *)stringByEvaluatingJavaScriptFromString:(NSString *)script {
__block NSString *resultString = nil;
__block BOOL finished = NO;
[self.webView evaluateJavaScript:script completionHandler:^(id result,NSError *error) {
if (error == nil) {
if (result != nil) {
resultString = [NSString stringWithFormat:@"%@",result];
}
} else {
NSLog(@"evaluateJavaScript error : %@",error.localizedDescription);
}
finished = YES;
}];
while (!finished)
{
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
}
return resultString;
}
由于进行了这些验证,因此用户名和密码为空白,形式为“ ng-pristine ng-untouched ng-valid”。只要用iPhone的键盘输入用户名和密码,它就可以通过javascript调用登录以进行按钮单击。在使用JS执行的JavaScript提交表单之前,有什么方法可以在表单中调用或验证“ ng-pristine ng-untouched ng-valid”?
注意:我无权更改服务器中的JS。无论做什么,都必须来自iOS。
谢谢
解决方法
好的。所以我找到了解决方案。这不是Javascript。因此,它将无法像Javascript一样工作。代替document.getElementById,我们必须将其用于AngularJS:
NSString *submitUserRequest = [NSString stringWithFormat:@"angular.element(document.getElementById('useremail')).scope().userId='%@';",[email stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
NSString *submitPasswordRequest = [NSString stringWithFormat:@"angular.element(document.getElementById('userpassword')).scope().password='%@';",[password stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
因为以前,它没有填充文本输入字段,因为AngulaJS已经将它与dom指令绑定了。
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