[英]iOS UIWebView flicker issue
我在同一屏幕上有一個UIWebView和一個滑動手勢。 刷卡時,我正在重新加載Webview,因為如果不這樣做,就不會調用js。
重新加載僅一次, 我無法再次刷卡 。
當我刪除[self.webview reload]
滑動就可以了,但是UIWebView一直閃爍。 每次都會跳起來! 每次滑動時,我都需要致電js。
我嘗試了這些:
方法1:
when loading webview:
self.webview.alpha = 0;
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.30];
self.webview.alpha = 1;
[UIView commitAnimations];
}
方法2:
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[self.webview setOpaque:NO];
self.webview.backgroundColor = [UIColor clearColor];
}
方法3:
- (void)viewDidLoad {
[super viewDidLoad];
[self.webview loadHTMLString:@"<html><body style=\"background-color:black;\"></body></html>" baseURL:nil];
[self performSelector:@selector(loadWebview) withObject:nil afterDelay:0.1];
}
-(void)loadWebview {
self.webview.delegate = self;
self.webview.scrollView.delegate = self;
self.webview.scrollView.bounces = NO;
self.webview.scrollView.scrollsToTop = NO;
[self.view addSubview:self.webview];
pathToHtml = [[NSBundle mainBundle] pathForResource:@"mypath" ofType:@"html"];
NSString* appHtml = [NSString stringWithContentsOfFile:pathToHtml encoding:NSUTF8StringEncoding error:nil];
NSURL *baseURL = [NSURL fileURLWithPath:pathToHtml];
[self.webview loadHTMLString:appHtml baseURL:baseURL];
}
需要幫忙!
我發現我的webViewDidFinishLoad
有這個:
//Make the page fit to view. THIS IS BAD
CGRect webviewBound = self. webview.bounds;
webviewBound.size.height = self. webview.scrollView.contentSize.height;
self. webview.bounds = webviewBound;
所以我刪除了並添加:
[self.webview.scrollView setContentSize: CGSizeMake(self.webview.frame.size.width, self.webview.scrollView.contentSize.height)];
self.webview.scrollView.delegate = self;
我在viewDidLoad
添加了此代碼,因為我的背景是灰色的:
//Removes the shadow from the webview i.e., "grey background"
if ([[self.webview subviews] count] > 0)
{
for (UIView* shadowView in [[[self.webview subviews] objectAtIndex:0] subviews])
{
[shadowView setHidden:YES];
}
// unhide the last view so it is visible again because it has the content
[[[[[self.webview subviews] objectAtIndex:0] subviews] lastObject] setHidden:NO];
}
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