IOS-询问用户在uiwebview媒体播放器中播放歌曲

Question

如果我在 UIWebView 中单击 mp3 url，它会弹出媒体播放器以自动播放 mp3。但在这里我需要的只是要求用户确认在 UIWebview 媒体播放器中播放歌曲。是否可以访问 UIWebview 媒体播放器？如果是怎么办？请帮助我

Answer 1

是的，可以要求用户确认。

用户 UIWebView 委托(delegate)方法:

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
self.URL = [request URL];
if (navigationType == UIWebViewNavigationTypeLinkClicked)
{
    AVURLAsset* asset;

    self.songURL = [NSString stringWithFormat:@"%@",self.URL];

    //Check for supported song formatted 
    if([self.songURL hasSuffix:@".mp3"] ||
       [self.songURL hasSuffix:@".wav"] ||
       [self.songURL hasSuffix:@".aiff"] ||
       [self.songURL hasSuffix:@".aac"] ||
       [self.songURL hasSuffix:@".m4a"] ||
       [self.songURL hasSuffix:@".m4p"] ||
       [self.songURL hasSuffix:@".caf"])
    {

        asset = [[AVURLAsset alloc]initWithURL:self.URL options:nil];

        if(asset != nil)
        {
            UIActionSheet *actSheet = [[UIActionSheet alloc]
                                       initWithTitle:@"Songs"
                                       delegate:self
                                       cancelButtonTitle:@"Cancel"
                                       destructiveButtonTitle:@"Download"
                                       otherButtonTitles:@"Listen Online", nil];
            [actSheet showInView:self.view];
        }
        [asset release];
        return NO;

    }
}
return YES;
}

在 UIActionSheetDelegate 方法上:

-(void) actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
  if(buttonIndex == 1)
  {
     [self.webView loadRequest:[NSURLRequest requestWithURL:self.URL]];
 }
}