一、gitlab的SSH问题
Gitlab上出现“You won't be able to pull or push project code via SSH until you add an SSH key to you”
二、flutter XCode版本问题
The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 7.0, but the range ...
将下述内容添加在PodFile的最下方,重新执行Pod install,修改的版本号和项目中的一致,否则报错。
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '8.0'
end
end
end
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版权声明:本文为CSDN博主「Eric_HYD」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/haha223545/article/details/105165247
三、JS和web交互
iOS 与JS交互之WKScriptMessageHandler协议
1、iOS调用JS:
iOS调用JS方式是通过WKWebView的-evaluateJavaScript:completionHandler:方法来实现的。
2、JS调用iOS
JS代码:
//! 登录按钮
<button onclick = "login()" style = "font-size: 18px;">登录</button>
//! 登录
function login() {
var token = "js_tokenString";
var action = "loginSucceed";
window.webkit.messageHandlers.jsToOc.postMessage(action, token);
}
iOS代码:
//! 第一步:导入WebKit框架头文件
#import <WebKit/WebKit.h>
//! 第二步:WKWebViewWKScriptMessageHandlerController遵守WKScriptMessageHandler协议
@interface WKWebViewWKScriptMessageHandlerController () <WKScriptMessageHandler>
//! 第三步:为userContentController添加ScriptMessageHandler,并指明name
WKUserContentController *userContentController = [[WKUserContentController alloc] init];
[userContentController addScriptMessageHandler:self name:@"jsToOc"];
//! 第四步:使用添加了ScriptMessageHandler的userContentController配置configuration
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
configuration.userContentController = userContentController;
//! 第五步:使用configuration对象初始化webView
_webView = [[WKWebView alloc] initWithFrame:self.view.bounds configuration:configuration];
//! 第六步:WKWebView收到ScriptMessage时回调此方法
#pragma mark - WKScriptMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
if ([message.name caseInsensitiveCompare:@"jsToOc"] == NSOrderedSame) {
[WKWebViewWKScriptMessageHandlerController showAlertWithTitle:message.name message:message.body cancelHandler:nil];
}
}
- 实现原理:
1、JS与iOS约定好jsToOc方法,用作JS在调用iOS时的方法;
2、iOS使用WKUserContentController的-addScriptMessageHandler:name:方法监听name为jsToOc的消息;
3、JS通过window.webkit.messageHandlers.jsToOc.postMessage()的方式对jsToOc方法发送消息;
4、iOS在-userContentController:didReceiveScriptMessage:方法中读取name为jsToOc的消息数据message.body。
注意:[userContentController addScriptMessageHandler:self name:@"jsToOc"]会引起循环引用问题。一般来说,在合适的时机removeScriptMessageHandler可以解决此问题。比如:在-viewWillAppear:方法中执行add操作,在-viewWillDisappear:方法中执行remove操作。
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[_webView.configuration.userContentController addScriptMessageHandler:self name:@"jsToOc"];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[_webView.configuration.userContentController removeScriptMessageHandlerForName:@"jsToOc"];
}
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