这是我的代码:
#define GOOGLE_STATIC_MAP_IMAGE @"https://maps.googleapis.com/maps/api/staticmap?center=%@&zoom=15&size=320x150&maptype=roadmap&markers=color:green|label:H|%@"
-(UIImage*)GetGoogleStaticMap
{
NSString* coordinates = [NSString stringWithFormat:@"%f,%f", latitude, longitude];
NSString *stringURL = [NSString stringWithFormat:GOOGLE_STATIC_MAP_IMAGE, coordinates, coordinates]; //coordinates x2 = for the center & the marker
NSURL *url = [NSURL URLWithString:stringURL];
NSData *imageData = [[NSData alloc] initWithContentsOfURL:url];
UIImage *image = [UIImage imageWithData:imageData];
return image;
}
如果我将stringURL粘贴到浏览器上,我会得到所需的结果,但imageData会返回nil - ideas?
答案 0 :(得分:0)
由于字符串中的某些字符,它可能返回了nil。
在创建stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding
对象之前,请尝试在stringURL
上调用url
。
例如:
newStringURL = [stringURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];