小编ric*_*ich的帖子

我整天都在阅读这篇文章,根本无法解决问题.我正在尝试加载一个网页,并在完成加载后自动将其滚动到预先确定的点.我一直在阅读教程,如http://iphoneincubator.com/blog/windows-views/how-to-inject-javascript-functions-into-a-uiwebview,但仍然没有运气.

这是我的.m问题出现的地方.我很绝望请帮忙!另外,它告诉我我的webViewDidFinishLoad正在覆盖实例变量,但这应该不是我认为的问题

- (void)viewDidLoad {
    [super viewDidLoad];

    NSString *urlAddress = @"http://www.twitter.com/richrines";
    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [webView loadRequest:requestObj];

    // Do any additional setup after loading the view from its nib.
}


- (void)webViewDidFinishLoad:(UIWebView *)webView {
     [webView stringByEvaluatingJavaScriptFromString:@"var script = document.createElement('script');"  
     "script.type = 'text/javascript';"  
     "script.text = \"function myFunction() { "  
     "window.scrollTo(100,100)"
     "}\";"  
     "document.getElementsByTagName('head')[0].appendChild(script);"];  

     [webView stringByEvaluatingJavaScriptFromString:@"myFunction();"];
}

出于某种原因,当我传入表单数据时,它将保存到数据库中为nil.我正在使用rails 4并使用强大的参数,根据服务器一切看起来不错,但最终它最终节省为零.非常感谢所有的帮助,我是铁杆的新手,这个让我难过.我目前还没有在模型中进行任何验证,试图让它工作.

控制器代码

def create
    @movie = Movie.new(params[movie_params])
    if @movie.save
       redirect_to @movie
    else
      flash[:error] = "Didn't save"
      render 'new'
    end 
  end


private
  def movie_params
    params.require(:movie).permit(:title, :rating)
  end

<%= form_for(@movie) do |f|  %>
    <%= f.label :title %>
    <%= f.text_area :title %>
    <%= f.label :rating %>
    <%= f.text_area :rating %>
    <%= f.submit "Submit" %>
<% end %>

我试图向float我的游戏中心排行榜提交两位小数长度,但是唯一允许提交的格式是int64_t.我使用默认的Apple报告分数方法:

- (void)reportScore:(int64_t)score forCategory:(NSString *)category {
    GKScore *scoreReporter = [[GKScore alloc] initWithCategory:category];   
    scoreReporter.value = score;
    [scoreReporter reportScoreWithCompletionHandler: ^(NSError *error) {
        [self callDelegateOnMainThread: @selector(scoreReported:) withArg: NULL error: error];
    }];
}

我正在尝试使用此方法为报表分数方法提供分数:

- (IBAction)increaseScore {
    self.currentScore = self.currentScore + 1;
    currentScoreLabel.text = [NSString stringWithFormat: @"%lld", self.currentScore];
    NSLog(@"%lld", self.currentScore);
}

请帮忙,我一直在谷歌上搜索疯狂,无法找到答案.