项目中是在tableviewcell上加载wkwebview，长按弹出自定义菜单功能。废话不多说直接上代码，全是干货。
- (instancetype)initWithStyle:(UITableViewCellStyle)stylereuseIdentifier:(NSString*)reuseIdentifier
{
if(self= [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self becomeFirstResponder]; //必须添加,如果不添加的话，长按wkwebview系统自带的菜单仍显示
[self createWebView];
}
return self;
}
#pragma mark- webView
- (void)createWebView
{
WKWebViewConfiguration *wkWebConfig = [[WKWebViewConfiguration alloc] init];
[wkWebConfig.userContentController addScriptMessageHandler:self name:@"YSPnativeCmd"];
UIMenuController * menu = [UIMenuController sharedMenuController];
UIMenuItem*item0 = [[UIMenuItemalloc]initWithTitle:@"做笔记"action:@selector(TakenotesDidClicked:)];
UIMenuItem*item2 = [[UIMenuItemalloc]initWithTitle:@"分享图片"action:@selector(ShareImageDidCicked:)];
[menusetMenuItems:@[item0,item2]];
self.WKHeadWebView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 5, WXScreenWidth , 1) configuration:wkWebConfig];
self.WKHeadWebView.backgroundColor = [UIColor clearColor];
self.WKHeadWebView.opaque = NO;
self.WKHeadWebView.userInteractionEnabled = YES;
self.WKHeadWebView.scrollView.bounces = NO;
self.WKHeadWebView.UIDelegate = self;
self.WKHeadWebView.navigationDelegate = self;
self.WKHeadWebView.scrollView.scrollEnabled = NO;
self.WKHeadWebView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[self.WKHeadWebView sizeToFit];
[self.WKHeadWebView.scrollView addObserver:self forKeyPath:@"contentSize" options:NSKeyValueObservingOptionNew context:nil];
self.scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, WXScreenWidth, 1)];
self.scrollView.scrollEnabled = NO;
[self.scrollView addSubview:self.WKHeadWebView];
[self.contentView addSubview:self.scrollView];
}
#pragma mark --menutViewController
/**
* 通过这个方法告诉UIMenuController它内部应该显示什么内容
* 返回YES，就代表支持action这个操作
*/
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
if(action ==@selector(TakenotesDidClicked:) || action ==@selector(ShareImageDidCicked:)) {
return YES; // YES -> 代表我们只监听分享图片: / 做笔记:方法
}
return NO; // 除了上面的操作，都不支持
}
// 说明控制器可以成为第一响应者
- (BOOL)canBecomeFirstResponder {
return YES;
}
//在tableviewcell上加载wkwebview必须添加该方法，如果不添加的话，长按wkwebview系统自带的菜单仍显示
- (BOOL)canResignFirstResponder {
return NO;
}
//分享图片
- (void)ShareImageDidCicked:(UIMenuController *)menu
{
[self.WKHeadWebView evaluateJavaScript:@"window.getSelection().toString()" completionHandler:^(id _Nullable content, NSError * _Nullable error) {
NSString*selectContent = (NSString*)content;
}];
}
//做笔记
- (void)TakenotesDidClicked:(UIMenuController *)menu
{
[self.WKHeadWebView evaluateJavaScript:@"window.getSelection().toString()" completionHandler:^(id _Nullable content, NSError * _Nullable error) {
NSString*selectContent = (NSString*)content;
}];
}
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