我創建一個webview並使用同一個ViewController上的另一個視圖上的按鈕加載它。 webview從Doc dir加載pdf文件。目前爲止一切正常。但現在用戶應該有一個按鈕來關閉web視圖。我該怎麼做呢?如何將關閉按鈕添加到UIwebview
謝謝你的回答!
編輯:現在我設法添加關閉按鈕。看到below.but如果我試圖關閉
這裏是我的代碼,創建web視圖更新的代碼:
- (IBAction)globeButton:(id)sender {
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePathAndDirectory = [documentsDirectory stringByAppendingPathComponent:@"files"];
NSString *fileName = [NSString stringWithFormat:@"%@/PDFfilename.pdf",
filePathAndDirectory];
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 50, 900, 650)];
NSURL *targetURL = [NSURL fileURLWithPath:fileName];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];
[self.view addSubview:webView];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self
action:@selector(aMethod:)
forControlEvents:UIControlEventTouchDown];
[button setTitle:@"Close" forState:UIControlStateNormal];
button.frame = CGRectMake(390, 605, 160, 40);
[button addTarget:self action:@selector(close:) forControlEvents:UIControlEventTouchDown];
[webView addSubview:button];}
但下一行導致錯誤: - [SecondViewController amethod方法:]:無法識別的選擇發送到實例0x78327c0'
- (IBAction爲)密切:(ID)發送方{[self.GlobeWebView removeFromSuperview];}
謝謝!我添加了按鈕,但是如果點擊它,我會收到一個錯誤消息。看到上面的代碼編輯! – Jan 2012-07-16 14:26:42
@Jan,因爲您將方法命名爲close併爲'aMethod'添加了選擇器,正確的方法是[button addTarget:self action:@selector(close :) forControlEvents:UIControlEventTouchDown]; – 2012-07-16 14:29:30
謝謝你的提示。我改變了它,但仍然收到上述錯誤!你有什麼主意嗎? – Jan 2012-07-16 14:42:55