iOS下PDF文件的浏览和涂鸦效果的简单实现

浏览PDF的效果 方法一:利用webview 代码如下: -(void)loadDocument:(NSString *)documentName inView:(UIWebView *)webView { NSString *path = [[NSBundle mainBundle] pathForResource:documentName ofType:nil]; NSURL *url = [NSURL fileURLWithPath:path]; NSURLRequest *request = [NSURLRequest requestWithU