設置UIView框架

Question

我想在鍵盤出現時調整我的UITextView，但我不知道我在做什麼錯誤。

我出現時的鍵盤這些三行代碼名爲：

CGSize kbSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size; 

textView.frame = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height-kbSize.height); 

NSLog(@"%f,%f,%f,%f", textView.frame.origin.x, textView.frame.origin.y, textView.frame.size.width, textView.frame.size.height); 

對於一些很奇怪的原因，我的鍵盤沒有出現，這裏是被記錄：

0.000000， -180.000000,480.000000,180.000000

爲什麼CGRects y原點在0處硬編碼時被設置爲-180？

編輯：textView是我編程創建的UITextView。我沒有使用Interface Builder。

編輯2：看起來問題是視圖旋轉時自動調整大小。

Answer 1

你可以試試這個：

- (void) moveTextViewForKeyboard:(NSNotification*)aNotification up:(BOOL)up { 
    NSDictionary* userInfo = [aNotification userInfo]; 
    NSTimeInterval animationDuration; 
    UIViewAnimationCurve animationCurve; 
    CGRect keyboardEndFrame; 

    [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] getValue:&animationCurve]; 
    [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:&animationDuration]; 
    [[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardEndFrame]; 

    [UIView beginAnimations:nil context:nil]; 
    [UIView setAnimationDuration:animationDuration]; 
    [UIView setAnimationCurve:animationCurve]; 

    CGRect newFrame = textView.frame; 
    CGRect keyboardFrame = [self.view convertRect:keyboardEndFrame toView:nil]; 
    keyboardFrame.size.height -= tabBarController.tabBar.frame.size.height; 
    newFrame.size.height -= keyboardFrame.size.height * (up?1:-1); 
    textView.frame = newFrame; 

    [UIView commitAnimations]; 
} 

希望對大家有所幫助