iphone - UITextView 在 iPhone 中滚动(自动)？

Question

我在 iPhone 应用程序中工作，使用 UITextView 在其中显示多个文本，当用户点击屏幕时，自动从下到上滚动 UITextView 内容(滚动级别慢)并且它工作正常，我想提高滚动速度像 1,2,3,4,5,6...10，该怎么做？请帮助我。

提前致谢

我试过这个:

     - (void)viewDidLoad
    {
        [super viewDidLoad];

        ScriptDetails = [[UITextView alloc]initWithFrame:CGRectMake(0,9,480,285)];
        ScriptDetails.text=Script;
        ScriptDetails.textAlignment=UITextAlignmentLeft;
        ScriptDetails.editable=NO;
        ScriptDetails.delegate=self;
        ScriptDetails.font=[UIFont fontWithName:str1 size:f];
        ScriptDetails.backgroundColor=tColor1;
        ScriptDetails.textColor=tColor;
        [self.view addSubview:ScriptDetails];

     UITapGestureRecognizer *singleTap = [[[UITapGestureRecognizer alloc] initWithTarget: self action:@selector(TouchToPlay)] autorelease];
    singleTap.delegate=self;
    singleTap.numberOfTapsRequired = 1; 
    [ScriptDetails addGestureRecognizer:singleTap];
    }

-(void)TouchToPlay
{
    NSLog(@"single");  

  timer = [NSTimer scheduledTimerWithTimeInterval:(35.0/1000.0)
                                                   target:self
                                                 selector:@selector(autoscrollTimerFired:) 
                                                 userInfo:nil 
                                                  repeats:YES];

}



- (void)autoscrollTimerFired:(NSTimer*)timer 
{
    CGPoint scrollPoint = ScriptDetails.contentOffset;
    scrollPoint = CGPointMake(scrollPoint.x, scrollPoint.y + 1);
    [ScriptDetails setContentOffset:scrollPoint animated:NO];
}

Answer 1

另一种方法是将变量放在- (void)autoscrollTimerFired:(NSTimer*)timer 方法中在 scrollPoint = CGPointMake(scrollPoint.x, scrollPoint.y + 1); 行而不是 1 放一些 iVar 代替并提供一些机制，比如一个 + 和 - 按钮来增加和减少速度。