iphone - 不兼容的指针类型将 'NSURL *__strong' 发送到类型为 'NSString *' 的参数

Question

NSString *urlString = [NSString stringWithFormat:@"http://shareaspetto.com/share/updateprofile.php?name=%@&gender=%@&email=%@&about_us=%@&id=%@&image=%@", nameString, genderString, emailString, aboutusString, idString, imgNameString];
NSLog(@"urlString = %@", urlString);
while ([urlString rangeOfString:@" "].location != NSNotFound) {
    urlString = [urlString stringByReplacingOccurrencesOfString:@" " withString:@"%20"];
}    
NSString *rplyString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]];

当我编译上面的代码时，警告 Incompatible pointer types sending 'NSURL *__strong' to parameter of type 'NSString *' 发生了。

Answer 1

使用 stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding 隐藏字符串

NSString *urlString = [NSString stringWithFormat:@"http://shareaspetto.com/share/updateprofile.php?name=%@&gender=%@&email=%@&about_us=%@&id=%@&image=%@", nameString, genderString, emailString, aboutusString, idString, imgNameString];
urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
NSLog(@"urlString = %@", urlString);
while ([urlString rangeOfString:@" "].location != NSNotFound) {
    urlString = [urlString stringByReplacingOccurrencesOfString:@" " withString:@"%20"];
}

NSString *rplyString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]];