iOS-禁用 UIWebView 放大镜及拷贝粘贴弹出框

来源：互联网发布：csol控制台优化刀速编辑：程序博客网时间：2024/05/19 18:15

大家常常在开发中会碰到这样的需求–禁用网页或PDF文件中放大镜及拷贝粘贴弹出框
查询了很多资料发现如下方法已经失效

webView.stringByEvaluatingJavaScriptFromString("document.documentElement.style.webkitUserSelect='none';")webView.stringByEvaluatingJavaScriptFromString("document.documentElement.style.webkitTouchCallout='none';")

你可以试一下如下方法
这里写图片描述
由于网页长按手势默认时间是0.5秒，所有我们在设置长按手势时间要小于0.5秒就行

-(void)createUI{    _myWebView = [[UIWebView alloc]initWithFrame:self.view.bounds];    NSURL * url = [NSURL URLWithString:@"http://www.baidu.com"];    [_myWebView loadRequest:[NSURLRequest requestWithURL:url]];    [self.view addSubview:_myWebView];//    加载pdf文件方法//    NSString *path = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"pdf"];//    //    NSURLRequest* pdfRequest = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:path]];//    [_myWebView loadRequest:pdfRequest];    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:nil];    longPress.delegate = self;   //记得在.h文件里加上<UIGestureRecognizerDelegate>委托    longPress.minimumPressDuration = 0.4;  //这里为什么要设置0.4，因为只要大于0.5就无效，我想是因为默认的跳出放大镜的手势的长按时间是0.5秒，    [_myWebView addGestureRecognizer:longPress];}#pragma mark - GestureRecognizerDelegate- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{    return NO; //这里一定要return NO,至于为什么大家去看看这个方法的文档吧。}

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