如何在objective c中访问GoogleAPI图表(对于iphone)?

-(iAction)按钮按下:(id)发件人{

NSLog(@"button pressed");

//|=%7c [pipe], you can used NSString *myurl=[yoururl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSString* myurl=@"your google chart url";

NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:myurl] cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                    timeoutInterval:60.0];                                              

NSURLResponse* response;
NSError* error;
NSData *imageData=[NSURLConnection sendSynchronousRequest:theRequest returningResponse:&response error:&error];
NSLog(@"%@",error); 
NSLog(@"%@",response);
NSLog(@"%@",imageData); 

UIImage *myimage = [[UIImage alloc] initWithData:imageData];

self.ringImge.image=myimage;

}

对不起,上面的回复有一处改动。

NSString*myurl=[yoururl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];