UIVisualEffects，UIWebView透明背景

Question

我正在使用Cordova構建iOS應用程序。 我想我的webview是透明的，背後是用戶壁紙的模糊背景。就像ios提醒應用程序一樣。

我知道這是一個常見的問題，但我沒有找到指定的回覆

這可能嗎？

在我viewDidLoad方法中，我添加這些行：提前

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    self.view.backgroundColor = [UIColor clearColor]; 

    UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark]; 
    UIVisualEffectView *blurEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect]; 
    blurEffectView.frame = self.view.bounds; 
    blurEffectView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 

    //This line places a dark black background with my app being blurred behind it 
    [self.view addSubview:blurEffectView]; 

    //This line instead just makes background of app plain black (the body of html app is transparent) and not blurred , I guess there is something wrong with view hierarchy maybe? 
    [self.view addSubview:self.webView]; 


    [self.webView setOpaque:NO]; 
    [self.webView setBackgroundColor:[UIColor clearColor]]; 
} 

感謝

Answer 1

設置的WebView背景顏色和不透明的順序應該是這樣的

[self.webView setBackgroundColor:[UIColor clearColor]]; 
[self.webView setOpaque:NO];