Javascript iOS 11.3 WKWebView:input.focus（）不'；我什么也不做
由于更新到iOS 11.3，HTML输入字段不能再使用JavaScript.focus（）聚焦，除非函数调用紧跟在触摸交互之后（过去可以随时使用.focus（））。是否有已知的解决方法？似乎他们已被推送到回购协议的一些更新：Javascript iOS 11.3 WKWebView:input.focus（）不'；我什么也不做,javascript,html,ios,safari,wkwebview,Javascript,Html,Ios,Safari,Wkwebview,由于更新到iOS 11.3，HTML输入字段不能再使用JavaScript.focus（）聚焦，除非函数调用紧跟在触摸交互之后（过去可以随时使用.focus（））。是否有已知的解决方法？似乎他们已被推送到回购协议的一些更新： 因此，请确保删除cordova ios平台，添加最新版本的wkwebview:cordova插件ionic webview 1.1.19，然后添加npm安装和添加平台ios。我刚刚测试了它的工作原理。将click函数添加到元素以调用focus函数很好。还是有更好的解决办法
因此，请确保删除cordova ios平台，添加最新版本的wkwebview:cordova插件ionic webview 1.1.19，然后添加npm安装和添加平台ios。我刚刚测试了它的工作原理。将click函数添加到元素以调用focus函数很好。还是有更好的解决办法
<html>
<head>
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta charset="UTF-8">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="format-detection" content="telephone=no, email=no">
</head>
<body>
<input id="test" type="text" placeholder="test" />
<input id="test2" type="text" placeholder="test" />
<script src="https://cdn.bootcss.com/fastclick/1.0.6/fastclick.js"></script>
<script>
window.FastClick.attach(document.body);
document.getElementById('test').onclick = function(e) {
// works fine
e.target.focus();
};
document.getElementById('test2').onclick = function(e) {
// not working
setTimeout(function() {
e.target.focus();
}, 50)
};
</script>
</body>
</html>
window.FastClick.attach（document.body）；
document.getElementById（'test'）。onclick=function（e）{
//很好
e、 target.focus（）；
};
document.getElementById（'test2'）。onclick=function（e）{
//不起作用
setTimeout（函数（）{
e、 target.focus（）；
}, 50)
};
focus（）blur（）Class class = NSClassFromString(@"WKContentView");
NSOperatingSystemVersion iOS_11_3_0 = (NSOperatingSystemVersion){11, 3, 0};
NSOperatingSystemVersion iOS_12_2_0 = (NSOperatingSystemVersion){12, 2, 0};
NSOperatingSystemVersion iOS_13_0_0 = (NSOperatingSystemVersion){13, 0, 0};
if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_13_0_0]) {
SEL selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:activityStateChanges:userObject:");
Method method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
IMP override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
});
method_setImplementation(method, override);
}
else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_12_2_0]) {
SEL selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");
Method method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
IMP override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
});
method_setImplementation(method, override);
}
else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_11_3_0]) {
SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");
Method method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
IMP override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
});
method_setImplementation(method, override);
} else {
SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:");
Method method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
IMP override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, id arg3) {
((void (*)(id, SEL, void*, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3);
});
method_setImplementation(method, override);
}
我没有使用Cordova，但在谷歌搜索了很多次之后，我已经找到了一种新的方法来使用相关的WebKit功能。无论如何，非常感谢@SevenSystems您能分享一下您找到的解决方案吗？我们也不使用Cordova，到目前为止还没有解决这个问题。你能解释一下你的答案吗？只需添加onclick来触发focusHello Seven，你能告诉我你在代码库的什么地方插入了这些行吗？谢谢。你好，路易斯——在初始化WKWebView之后。但是，从那时起，代码已扩展到较新的iOS版本。。。现在将更新它。