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如何将此UIScrollView设置为专注于特定点上的选定UITextfield。我想在键盘上方的文本框,我想能够向上滚动,而不是向下滚动。我的代码工作除了uiscrollview只能让我滚动下来,而不是。任何帮助将是伟大的,谢谢。UIScrollView - 向上滚动,但不向下
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.4];
//set Y according to keyBoard height
[self->mainScroll2 setFrame:CGRectMake(0.0,-70.0,320.0,580.0)];
[self->mainScroll2 setContentSize:CGSizeMake(320,780)];
[UIView commitAnimations];
}