iOS 输入框被键盘挡住的解决办法

1.TextField设置代理：

#pragma TextFieldDelegate
2.

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    [self animateTextField: textField up: YES];
}
3.
-(void)textFieldDidEndEditing:(UITextField *)textField

{
[self animateTextField: textField up: NO];
}
4.

- (void) animateTextField: (UITextField*) textField up: (BOOL) up
{
    const int movementDistance = 80; // tweak as needed
    const float movementDuration = 0.3f; // tweak as needed

    
    int movement = (up ? -movementDistance : movementDistance);

    
    [UIView beginAnimations: nil context: nil];
    [UIView setAnimationBeginsFromCurrentState: YES];
    [UIView setAnimationDuration: movementDuration];

    
    self.view.frame = CGRectOffset(self.view.frame, 0, movement);

    
    [UIView commitAnimations];

    
}
5.

-(BOOL)textFieldShouldReturn:(UITextField *)textField
{

    [textField resignFirstResponder];
    return YES;
}