简介:
本文主要是记录一下,WKWebView相关的一些知识。
1. WKWebView相关的类:
1.1 WKWebView:
WKWebView基本信息:
// WKWebViewConfiguration配置信息初始化webView
WKWebView * webView = [[WKWebView alloc] initWithFrame:CGRectZero configuration:config];
// 视图的用户界面委托代理
webView.UIDelegate = self;
// 导航代理
webView.navigationDelegate = self;
// 是否允许手势左滑返回上一级, 类似导航控制的左滑返回
webView.allowsBackForwardNavigationGestures = YES;
// 可返回的页面列表, 存储已打开过的网页
WKBackForwardList * backForwardList = [webView backForwardList];
// 是否可以返回上一历史列表项
[webView canGoBack];
// 返回上一历史列表项
[webView goBack];
// 是否可以进入下一列表项
[webView canGoForward];
// 进入下一列表项
[webView goForward];
// 进入下一指定列表项
[webView goToBackForwardListItem:backForwardList.forwardList[2]];
// 刷新当前页面
[webView reload];
// webView调用js字符串
[webView evaluateJavaScript:JSCookieString completionHandler:nil];
WKWebView远程和本地html文件加载:
/// 加载本地html文件
- (void)loadLocalUrl:(WKWebView *)webView {
NSString *path = [[NSBundle mainBundle] pathForResource:@"JStoOC.html" ofType:nil];
NSString *htmlString = [[NSString alloc]initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
// 加载本地html文件
[webView loadHTMLString:htmlString baseURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]]];
}
/// 加载远程html文件
- (void)loadRequest:(WKWebView *)webView {
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.chinadaily.com.cn"]];
// 添加头字段
// [request addValue:[self readCurrentCookieWithDomain:@"http://www.chinadaily.com.cn"] forHTTPHeaderField:@"Cookie"];
[webView loadRequest:request];
}
1.2 WKWebViewConfiguration配置信息类:
// WKWebViewConfiguration WKWebView的配置信息
WKWebViewConfiguration * config = [[WKWebViewConfiguration alloc] init];
// 是使用h5的视频播放器在线播放, 还是使用原生播放器全屏播放
config.allowsInlineMediaPlayback = YES;
// 设置视频是否需要用户手动播放 设置为NO则会允许自动播放
config.mediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypeAll;
// config.requiresUserActionForMediaPlayback = YES;
// 设置是否允许画中画技术 在特定设备上有效
config.allowsPictureInPictureMediaPlayback = YES;
// 设置请求的User-Agent信息中应用程序名称 iOS9后可用
config.applicationNameForUserAgent = @"ChinaDailyForiPad";
// 创建设置对象
WKPreferences *preference = [[WKPreferences alloc]init];
//最小字体大小 当将javaScriptEnabled属性设置为NO时,可以看到明显的效果
preference.minimumFontSize = 0;
//设置是否支持javaScript 默认是支持的
preference.javaScriptEnabled = YES;
// 在iOS上默认为NO,表示是否允许不经过用户交互由javaScript自动打开窗口
preference.javaScriptCanOpenWindowsAutomatically = YES;
config.preferences = preference;
1.3 WKUserContentController原生和JS交互:
// 自定义的WKScriptMessageHandler 是为了解决内存不释放的问题
WeakWebViewScriptMessageDelegate * weakScriptMessageDelegate = [[WeakWebViewScriptMessageDelegate alloc] initWithDelegate:self];
// 这个类主要用来做OC原生与JavaScript的交互管理
WKUserContentController * wkUController = [[WKUserContentController alloc] init];
// 注册一个name为jsToOcNoPrams的js方法
/**
需要注意的是addScriptMessageHandler很容易引起循环引用,导致控制器无法被释放,所以需要移除MessageHandler
控制器self -> WKWebView -> WKWebView copy -> configuration -> configuration copy -> userContentController -> 控制器self
*/
// 造成循环引用
// [wkUController addScriptMessageHandler:self name:@"jsToOcNoPrams"];
[wkUController addScriptMessageHandler:weakScriptMessageDelegate name:@"jsToOcNoPrams"];
[wkUController addScriptMessageHandler:weakScriptMessageDelegate name:@"jsToOcWithPrams"];
config.userContentController = wkUController;
// 使用完毕需要移除注册的js调用原生的方法
[[_webView configuration].userContentController removeScriptMessageHandlerForName:@"jsToOcNoPrams"];
[[_webView configuration].userContentController removeScriptMessageHandlerForName:@"jsToOcWithPrams"];
1.4 WKUserScript JS代码注入:
/// 手动向html页面注入js代码
- (void)insertJS:(WKWebView *)webView {
// 以下代码适配文本大小,由UIWebView换为WKWebView后,会发现字体小了很多,这应该是WKWebView与html的兼容问题,解决办法是修改原网页,要么我们手动注入JS
NSString *jSString = @"var meta = document.createElement('meta'); meta.setAttribute('name', 'viewport'); meta.setAttribute('content', 'width=device-width'); document.getElementsByTagName('head')[0].appendChild(meta);";
//用于进行JavaScript注入
WKUserScript *wkUScript = [[WKUserScript alloc] initWithSource:jSString injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];
[webView.configuration.userContentController addUserScript:wkUScript];
}
1.5 WKWebsiteDataStore缓存信息:
/// 清理webView的缓存和存储
- (void)clearWebCache {
NSDate * date = [[NSDate alloc] initWithTimeIntervalSince1970:0];
/**
在磁盘缓存上。
WKWebsiteDataTypeDiskCache,
html离线Web应用程序缓存。
WKWebsiteDataTypeOfflineWebApplicationCache,
内存缓存。
WKWebsiteDataTypeMemoryCache,
本地存储。
WKWebsiteDataTypeLocalStorage,
Cookies
WKWebsiteDataTypeCookies,
会话存储
WKWebsiteDataTypeSessionStorage,
IndexedDB数据库。
WKWebsiteDataTypeIndexedDBDatabases,
查询数据库。
WKWebsiteDataTypeWebSQLDatabases
*/
NSSet * types = [WKWebsiteDataStore allWebsiteDataTypes];
/**
WKWebsiteDataStore表示网站可能存在的各种类型的数据
利用。这包括cookie,磁盘和内存缓存,以及诸如WebSQL之类的持久数据,
IndexedDB数据库和本地存储。
*/
WKWebsiteDataStore * store = [WKWebsiteDataStore defaultDataStore];
// cookie存储
WKHTTPCookieStore * cookieStore = store.httpCookieStore;
// 设置cookie
// [cookieStore setCookie:<#(nonnull NSHTTPCookie *)#> completionHandler:<#^(void)completionHandler#>];
// 获取所有的cookie
// cookieStore getAllCookies:<#^(NSArray<NSHTTPCookie *> * _Nonnull)completionHandler#>
[store removeDataOfTypes:types modifiedSince:date completionHandler:^{
NSLog(@"清理完毕");
}];
}
2. WKWebView相关的代理:
2.1 WKUIDelegate代理:
// MARK: - WKUIDelegate :主要处理JS脚本,确认框,警告框等
/// web界面中有弹出警告框时调用
/// @param webView <#webView description#>
/// @param message <#message description#>
/// @param frame <#frame description#>
/// @param completionHandler <#completionHandler description#>
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"HTML的弹出框" message:message?:@"" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler();
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
/// 确认框:JavaScript调用confirm方法后回调的方法 confirm是js中的确定框,需要在block中把用户选择的情况传递进去
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"" message:message?:@"" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
completionHandler(NO);
}])];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler(YES);
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
/// 输入框:JavaScript调用prompt方法后回调的方法 prompt是js中的输入框 需要在block中把用户输入的信息传入
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * _Nullable))completionHandler{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:prompt message:@"" preferredStyle:UIAlertControllerStyleAlert];
[alertController addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
textField.text = defaultText;
}];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler(alertController.textFields[0].text?:@"");
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
/// 页面是弹出窗口 _blank 处理
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
if (!navigationAction.targetFrame.isMainFrame) {
[webView loadRequest:navigationAction.request];
}
return nil;
}
2.2 WKNavigationDelegate代理:
// MARK: - WKNavigationDelegate主要处理一些跳转、加载处理操作
/// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
NSLog(@"页面开始加载时调用");
}
/// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
[self.progressView setProgress:0.0f animated:NO];
}
/// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
}
/// 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
[self getCookie];
}
/// 提交发生错误时调用
- (void)webView:(WKWebView *)webView didFailNavigation:(WKNavigation *)navigation withError:(NSError *)error {
[self.progressView setProgress:0.0f animated:NO];
}
/// 接收到服务器跳转请求即服务重定向时之后调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation {
}
/// 根据WebView对于即将跳转的HTTP请求头信息和相关信息来决定是否跳转和做相应的处理
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSString * urlStr = navigationAction.request.URL.absoluteString;
NSLog(@"发送跳转请求:%@",urlStr);
// 自己定义的协议头
NSString *htmlHeadString = @"github://";
if([urlStr hasPrefix:htmlHeadString]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"通过截取URL调用OC" message:@"你想前往我的Github主页?" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}])];
[alertController addAction:([UIAlertAction actionWithTitle:@"打开" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSURL * url = [NSURL URLWithString:[urlStr stringByReplacingOccurrencesOfString:@"github://callName_?" withString:@""]];
[[UIApplication sharedApplication] openURL:url options:nil completionHandler:nil];
}])];
[self presentViewController:alertController animated:YES completion:nil];
decisionHandler(WKNavigationActionPolicyCancel);
}else{
decisionHandler(WKNavigationActionPolicyAllow);
}
}
/// 根据客户端受到的服务器响应头以及response相关信息来决定是否可以跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{
NSString * urlStr = navigationResponse.response.URL.absoluteString;
NSLog(@"当前跳转地址:%@",urlStr);
//允许跳转
decisionHandler(WKNavigationResponsePolicyAllow);
//不允许跳转
//decisionHandler(WKNavigationResponsePolicyCancel);
}
/// 需要响应身份验证时调用 同样在block中需要传入用户身份凭证
- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler{
// 用户身份信息
NSURLCredential * newCred = [[NSURLCredential alloc] initWithUser:@"user123" password:@"123" persistence:NSURLCredentialPersistenceNone];
// 为 challenge 的发送方提供 credential
[challenge.sender useCredential:newCred forAuthenticationChallenge:challenge];
completionHandler(NSURLSessionAuthChallengeUseCredential,newCred);
}
/// 进程被终止时调用
- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView{
}
2.3 WKScriptMessageHandler代理:
// MARK: - WKScriptMessageHandler、WeakWebViewScriptMessageDelegate
/// 被自定义的WKScriptMessageHandler在回调方法里通过代理回调回来,绕了一圈就是为了解决内存不释放的问题
/// 通过接收JS传出消息的name进行捕捉的回调方法
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
NSLog(@"name:%@\\\\n body:%@\\\\n frameInfo:%@\\\\n", message.name, message.body, message.frameInfo);
// 用message.body获得JS传出的参数体
NSDictionary * parameter = message.body;
// JS调用OC
if([message.name isEqualToString:@"jsToOcNoPrams"]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"js调用到了oc" message:@"不带参数" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}])];
[self presentViewController:alertController animated:YES completion:nil];
}else if([message.name isEqualToString:@"jsToOcWithPrams"]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"js调用到了oc" message:parameter[@"params"] preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
}
3. 其它代码:
- (void)viewDidLoad {
[super viewDidLoad];
self.webView = [self setWebView];
[self.view addSubview:self.webView];
[self.webView mas_makeConstraints:^(MASConstraintMaker *make) {
make.edges.mas_equalTo(0);
}];
// 添加监测网页加载进度的观察者
[self.webView addObserver:self forKeyPath:@"estimatedProgress" options:0 context:nil];
// 添加监测网页标题title的观察者
[self.webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:nil];
[self loadLocalUrl:self.webView];
_progressView = [[UIProgressView alloc] initWithFrame:CGRectZero];
_progressView.tintColor = [UIColor blueColor];
_progressView.trackTintColor = [UIColor clearColor];
[self.view addSubview:_progressView];
[_progressView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.right.mas_equalTo(0);
make.top.mas_equalTo(ZBYSize.navigationBarHeight + 2);
make.height.mas_equalTo(4);
}];
}
/// 解决 页面内跳转(a标签等)还是取不到cookie的问题
- (void)getCookie {
//取出cookie
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
//js函数
NSString *JSFuncString =
@"function setCookie(name,value,expires)\
{\
var oDate=new Date();\
oDate.setDate(oDate.getDate()+expires);\
document.cookie=name+'='+value+';expires='+oDate+';path=/'\
}\
function getCookie(name)\
{\
var arr = document.cookie.match(new RegExp('(^| )'+name+'=([^;]*)(;|$)'));\
if(arr != null) return unescape(arr[2]); return null;\
}\
function delCookie(name)\
{\
var exp = new Date();\
exp.setTime(exp.getTime() - 1);\
var cval=getCookie(name);\
if(cval!=null) document.cookie= name + '='+cval+';expires='+exp.toGMTString();\
}";
//拼凑js字符串
NSMutableString *JSCookieString = JSFuncString.mutableCopy;
for (NSHTTPCookie *cookie in cookieStorage.cookies) {
NSString *excuteJSString = [NSString stringWithFormat:@"setCookie('%@', '%@', 1);", cookie.name, cookie.value];
[JSCookieString appendString:excuteJSString];
}
//执行js
[_webView evaluateJavaScript:JSCookieString completionHandler:nil];
}
- (void)didReceiveMemoryWarning {
[self clearWebCache];
}
- (void)dealloc {
// 移除观察者
[_webView removeObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress))];
[_webView removeObserver:self forKeyPath:NSStringFromSelector(@selector(title))];
// 使用完毕需要移除注册的js调用原生的方法
[[_webView configuration].userContentController removeScriptMessageHandlerForName:@"jsToOcNoPrams"];
[[_webView configuration].userContentController removeScriptMessageHandlerForName:@"jsToOcWithPrams"];
}
// MARK: - Observer
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
if ([keyPath isEqualToString:NSStringFromSelector(@selector(estimatedProgress))]
&& object == _webView) {
NSLog(@"网页加载进度 = %f",_webView.estimatedProgress);
self.progressView.progress = _webView.estimatedProgress;
if (_webView.estimatedProgress >= 1.0f) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
self.progressView.progress = 0;
});
}
}else if([keyPath isEqualToString:@"title"]
&& object == _webView){
self.navigationItem.title = _webView.title;
}else{
[super observeValueForKeyPath:keyPath
ofObject:object
change:change
context:context];
}
}
// .h
@interface WeakWebViewScriptMessageDelegate : NSObject<WKScriptMessageHandler>
/// WKScriptMessageHandler 这个协议专门用来处理JavaScript调用原生OC的方法
@property (nonatomic, weak) id<WKScriptMessageHandler> scriptDelegate;
- (instancetype)initWithDelegate:(id<WKScriptMessageHandler>)scriptDelegate;
@end
// .m
@implementation WeakWebViewScriptMessageDelegate
- (instancetype)initWithDelegate:(id<WKScriptMessageHandler>)scriptDelegate {
self = [super init];
if (self) {
_scriptDelegate = scriptDelegate;
}
return self;
}
// MARK: - WKScriptMessageHandler
/// 遵循WKScriptMessageHandler协议,必须实现如下方法,然后把方法向外传递
/// 通过接收JS传出消息的name进行捕捉的回调方法
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
if ([self.scriptDelegate respondsToSelector:@selector(userContentController:didReceiveScriptMessage:)]) {
[self.scriptDelegate userContentController:userContentController didReceiveScriptMessage:message];
}
}
@end
4. OC和JS交互:
4.1 OC调用JS:
// 拼凑js字符串
NSMutableString *JSCookieString = JSFuncString.mutableCopy;
for (NSHTTPCookie *cookie in cookieStorage.cookies) {
NSString *excuteJSString = [NSString stringWithFormat:@"setCookie('%@', '%@', 1);", cookie.name, cookie.value];
[JSCookieString appendString:excuteJSString];
}
// 执行js的代码字符串JSCookieString
[_webView evaluateJavaScript:JSCookieString completionHandler:^(_Nullable id resut, NSError * _Nullable error) { // 调用js结果
if (error) {
NSLog(@"%@", error);
}
else {
NSLog(@"%@", resut);
}
}];
4.2 JS调用OC:
有两种调用方式:
- WKNavigationDelegate代理中URL调用:
/// 根据WebView对于即将跳转的HTTP请求头信息和相关信息来决定是否跳转、处理或者调用OC方法等
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSString * urlStr = navigationAction.request.URL.absoluteString;
NSLog(@"发送跳转请求:%@",urlStr);
// 自己定义的协议头
NSString *htmlHeadString = @"github://";
if([urlStr hasPrefix:htmlHeadString]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"通过截取URL调用OC" message:@"你想前往我的Github主页?" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}])];
[alertController addAction:([UIAlertAction actionWithTitle:@"打开" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSURL * url = [NSURL URLWithString:[urlStr stringByReplacingOccurrencesOfString:@"github://callName_?" withString:@""]];
[[UIApplication sharedApplication] openURL:url options:nil completionHandler:nil];
}])];
[self presentViewController:alertController animated:YES completion:nil];
decisionHandler(WKNavigationActionPolicyCancel);
}else{
decisionHandler(WKNavigationActionPolicyAllow);
}
}
- WKUserContentController和WKScriptMessageHandler联合调用:
这个实现主要是依靠WKScriptMessageHandler协议和WKUserContentController两个类;WKUserContentController对象负责注册JS方法,设置处理接收JS方法的代理,代理遵守WKScriptMessageHandler,实现捕捉到JS消息的回调方法。
WKWebViewConfiguration * config = [[WKWebViewConfiguration alloc] init];
// 注意循环引用
// [wkUController addScriptMessageHandler:self name:@"jsToOcNoPrams"];
[wkUController addScriptMessageHandler:weakScriptMessageDelegate name:@"jsToOcNoPrams"];
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
NSLog(@"name:%@\\\\n body:%@\\\\n frameInfo:%@\\\\n", message.name, message.body, message.frameInfo);
// 用message.body获得JS传出的参数体
NSDictionary * parameter = message.body;
// JS调用OC
if ([message.name isEqualToString:@"jsToOcNoPrams"]) {
// 调用OC方法
}
}
其它:
进入WKWebView一直打印:
打印信息:
[Process] kill() returned unexpected error 1
解决方法:
Edit Scheme -> Run -> Arguments -> Environment Variables -> OS_ACTIVITY_MODE = disable
如图: