iOS UITextField，UITextView键盘遮挡问题

//开始编辑输入框的时候，软键盘出现，执行此事件

-(void)textFieldDidBeginEditing:(UITextField *)textField{

    CGRect frame = textField.frame;

    int offset = frame.origin.y + 100 - (Height - 360.0);//键盘高度

    NSTimeInterval animationDuration = 0.30f;

    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];

    [UIView setAnimationDuration:animationDuration];

    

    //将视图的Y坐标向上移动offset个单位，以使下面腾出地方用于软键盘的显示

    if(offset > 0)

        self.view.frame = CGRectMake(0.0f, -offset, Width, Height);

    [UIView commitAnimations];

}

//输入框编辑完成以后，将视图恢复到原始状态

-(void)textFieldDidEndEditing:(UITextField *)textField{

    self.view.frame =CGRectMake(0, 0, Width, Height);

}