iOS-禁用 UIWebView 放大鏡及拷貝貼上彈出框
阿新 • • 發佈:2019-01-05
大家常常在開發中會碰到這樣的需求–禁用網頁或PDF檔案中放大鏡及拷貝貼上彈出框
查詢了很多資料發現如下方法已經失效
webView.stringByEvaluatingJavaScriptFromString("document.documentElement.style.webkitUserSelect='none';")
webView.stringByEvaluatingJavaScriptFromString("document.documentElement.style.webkitTouchCallout='none';")
你可以試一下如下方法
由於網頁長按手勢預設時間是0.5秒,所有我們在設定長按手勢時間要小於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];
// 載入pdf檔案方法
// 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; //記得在.h檔案里加上<UIGestureRecognizerDelegate>委託
longPress.minimumPressDuration = 0.4; //這裡為什麼要設定0.4,因為只要大於0.5就無效,我想是因為預設的跳出放大鏡的手勢的長按時間是0.5秒,
[_myWebView addGestureRecognizer:longPress];
}
#pragma mark - GestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return NO; //這裡一定要return NO,至於為什麼大家去看看這個方法的文件吧。
}