当键盘出现时，如何使UITextView可滚动？

Question

我想知道如何在编辑UITextView时使其可滚动吗？ 当用户想要对其进行编辑时，将显示键盘，但是UITextView不再可滚动。 因此，键盘后面的所有文本都不可见。

Answer 1

您可以减小sizeOf您的textView出现在键盘上

-(void)textViewDidBeginEditing:(UITextView *)textView
{
    CGRect frame = txtAddNote.frame;
    frame.size.height = 150; //Decrease your textView height at this time
    txtAddNote.frame = frame;
}
-(IBAction)DoneBarBtnPress:(id)sender
{
    CGRect frame = txtAddNote.frame;
    frame.size.height = 212; //Original Size of textView
    txtAddNote.frame = frame;

    //Keyboard dismiss 
    [self.view endEditing:YES];
}

Answer 2

只需在UITextView开始编辑时滚动视图即可。

-(void)textViewDidBeginEditing:(UITextView *)textView
{
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.3];
    self.view.frame = CGRectMake(self.view.frame.origin.x, -160, self.view.frame.size.width, self.view.frame.size.height);
    [UIView commitAnimations];

}

在endEditing中只需将“默认”屏幕设置为如下所示。

-(void)textViewDidEndEditing:(UITextView *)textView
{
    [textView resignFirstResponder];
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.3];
    self.view.frame = CGRectMake(self.view.frame.origin.x, 0, self.view.frame.size.width, self.view.frame.size.height);
    [UIView commitAnimations];
}

UPDATE

根据您的要求，我们用视图设置框架，请参见下面的代码

-(void)textViewDidBeginEditing:(UITextView *)textView
    {
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:0.3];
         [yourTextView setFrame:CGRectMake(self.view.frame.origin.x,self.view.frame.origin.y,self.view.‌​frame.size.width,self.view.frame.size.height - 160)];
        [UIView commitAnimations];

    }

-(void)textViewDidEndEditing:(UITextView *)textView
    {
        [textView resignFirstResponder];
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.3];
        [yourTextView setFrame:self.view];
        [UIView commitAnimations];
    }