[UI控制項問題] UITextField控制項處理鍵盤彈出時遮住輸入框的問題

來源:互聯網
上載者:User
實現以下四個方法,如果彈出的鍵盤會遮住輸入框 ,整體的介面會向上移動,這樣就不會遮住輸入框了。自己增加UITextFieldDelegate委託。
只適合iPhone,如果想要支援iPad,只要把216改成iPad上面鍵盤的高度即可。

- (void)keyboardWillShow:(NSNotification *)noti
{        
        //鍵盤輸入的介面調整        
        //鍵盤的高度
        float height = 216.0;                
        CGRect frame = self.view.frame;        
        frame.size = CGSizeMake(frame.size.width, frame.size.height - height);        
        [UIView beginAnimations:@"Curl"context:nil];//動畫開始          
        [UIView setAnimationDuration:0.30];           
        [UIView setAnimationDelegate:self];          
        [self.view setFrame:frame];         
        [UIView commitAnimations];         
}


- (BOOL)textFieldShouldReturn:(UITextField *)textField 
{        
    // When the user presses return, take focus away from the text field so that the keyboard is dismissed.        
    NSTimeInterval animationDuration = 0.30f;        
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];        
    [UIView setAnimationDuration:animationDuration];        
    CGRect rect = CGRectMake(0.0f, 0.0f, self.view.frame.size.width, self.view.frame.size.height);        
    self.view.frame = rect;        
    [UIView commitAnimations];        
    [textField resignFirstResponder];
    return YES;        
}

- (void)textFieldDidBeginEditing:(UITextField *)textField
{        
        CGRect frame = textField.frame;
        int offset = frame.origin.y + 32 - (self.view.frame.size.height - 216.0);//鍵盤高度216
        NSTimeInterval animationDuration = 0.30f;                
        [UIView beginAnimations:@"ResizeForKeyBoard" context:nil];                
        [UIView setAnimationDuration:animationDuration];
        float width = self.view.frame.size.width;                
        float height = self.view.frame.size.height;        
        if(offset > 0)
        {
                CGRect rect = CGRectMake(0.0f, -offset,width,height);                
                self.view.frame = rect;        
        }        
        [UIView commitAnimations];                

}


- (IBAction) backgroundTap:(id)sender{

[remarksField resignFirstResponder];

[self textFieldShouldReturn:remarksField];

}

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