iPhone SDK重新加载UIView的内容

发布于 2024-08-25 19:52:24 字数 370 浏览 12 评论 0原文

我有两个视图，一个视图占据整个屏幕，第二个视图仅覆盖一小部分。我想要的是第二个视图位于第一个视图上（我已经完成了），但问题是，当我设置值（在本例中为 UILabel）时，屏幕上的标签不会显示该新值。我知道该方法确实被调用，但由于某种原因它不会改变标签的值。

编辑：这是代码：

-(void)loadHighScores
{   
[no1 setText:@"test"];
 NSLog(@"it works");
}

这就是我如何称呼它：

    highscore = [[HighScore alloc] init];
    [highscore loadHighScores];

原文

I have two views, one view takes the whole screen, the second view covers only a little portion. What I want is for that second view to be on the first view (which I already have done), but the problem is, when I set values (in this case UILabel's) the label on the screen doesn't display that new value. I know for a fact the method gets called, but for some reason it won't change the label's value.

Edit: Here's the code:

-(void)loadHighScores
{   
[no1 setText:@"test"];
 NSLog(@"it works");
}

And here's how I call it:

    highscore = [[HighScore alloc] init];
    [highscore loadHighScores];

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桃酥萝莉 2024-09-01 19:52:24

您是否尝试过：

[myView setNeedsDisplay];

引用Apple文档：

默认情况下，几何图形会更改为视图
自动重新显示视图
无需调用
绘制矩形：方法。因此，您需要
仅请求视图重绘
当数据或状态用于
绘制视图发生变化。在这种情况下，
发送视图 setNeedsDisplay
信息。任何标记为的 UIView 对象
需要显示的会自动
应用程序时重新显示
返回到运行循环。

Have you tried:

[myView setNeedsDisplay];

Quote from Apple docs:

By default, geometry changes to a view
automatically redisplays the view
without needing to invoke the
drawRect: method. Therefore, you need
to request that a view redraw only
when the data or state used for
drawing a view changes. In this case,
send the view the setNeedsDisplay
message. Any UIView objects marked as
needing display are automatically
redisplayed when the application
returns to the run loop.