Question

我从图像选择器中取出图像并将图像上传到网络服务，我有一个图像网址。我使用用户默认值保存图像，如下所示：

-(void)postSignupService {

[NewJsonHelperClass postExecuteWithParams:@"signup" secondParm:[self signUpParams] onCompletion:^(NSDictionary *json){

    if ([[json valueForKey:@"status"] isEqualToString:@"success"]) {

        NSDictionary *dataDict =[NSDictionary new];
        dataDict =[json valueForKey:@"user"];

        [[NSUserDefaults standardUserDefaults] setObject:@"sucess" forKey:@"LoginStatus"];
        [[NSUserDefaults standardUserDefaults] setObject:[dataDict valueForKey:@"_id"] forKey:@"user_Id"];
        [[NSUserDefaults standardUserDefaults] setObject:[dataDict valueForKey:@"userName"] forKey:@"userName"];
        [[NSUserDefaults standardUserDefaults] setObject:[dataDict valueForKey:@"password"] forKey:@"Password"];
        [[NSUserDefaults standardUserDefaults] setObject:[dataDict valueForKey:@"email"] forKey:@"email_Id"];
        [[NSUserDefaults standardUserDefaults] setObject:[dataDict valueForKey:@"profile_pic"] forKey:@"image_Str"];

        NSLog(@"datadict is %@",dataDict);

        SelectFoodVC *selectVc = [appDelegateRef.storyBoard instantiateViewControllerWithIdentifier:@"SelectFoodVC"];
        [self.navigationController pushViewController:selectVc animated:YES];

    //    TabBarController *tabVc = [appDelegateRef.storyBoard instantiateViewControllerWithIdentifier:@"TabBarController"];
     //   [self.navigationController pushViewController:tabVc animated:YES];

    }

    else{
        [reUse showAlertWithTitle:[json valueForKey:@"status"] message:[json valueForKey:@"user"] thirdParam:self];
    }

}];

}
-(NSDictionary *)signUpParams {

    NSMutableDictionary *params =[NSMutableDictionary new];
    params[@"userName"] =self.userNameTf.text;
    params[@"email"] =self.emailTf.text;
    params[@"password"] =self.passwordTf.text;
    NSLog(@"imgstr is %@",imgStr);
    params[@"profile_pic"] =imgStr;


return params;
}

这里的配置文件pic值是imgStr，它是从web服务获得的图像。

当我尝试在不同的viewcontroller中检索imageurl时，userdefault的值为null，因为它显示错误。

NSString *urlstring = [[NSUserDefaults standardUserDefaults] objectForKey:@"image_Str"];
NSLog(@"urlstring is %@",urlstring);

此处urlstring为null，错误为错误：请求失败：未找到（404）

Answer 1

  NSString *str = [NSString stringWithFormat:@"http://swiftdeveloperblog.com/wp-content/uploads/2015/07/1.jpeg"];

    NSURL *url = [NSURL URLWithString:str];

    [[NSUserDefaults standardUserDefaults]setURL:url forKey:@"URL"];

    [[NSUserDefaults standardUserDefaults]synchronize];


   NSString *getURL = [[NSUserDefaults standardUserDefaults]URLForKey:@"URL"];

    NSLog(@"url is %@",getURL);

使用目标c中的userdefaults访问imageurl

1 个答案: