2011-11-23 73 views
1

我在學習過程中,我有這個特定的代碼,只要我們點擊文本框或textview屏幕向上移動,當我們退出鍵盤屏幕到達其原始位置時,它對於橫向和縱向模式均可正常工作如何將y軸設置爲0,如果屏幕超出了原始屏幕或屏幕下方 - 在iPad

問題是什麼。最初它是在肖像模式下,當我們點擊文本框或文本視圖時,屏幕正在擡起並顯示鍵盤,現在當我旋轉到橫向並退出鍵盤時,屏幕正在向下移動,反之亦然。

- (void)animateTextField:(UITextField*)textField textView:(UITextView *)textView up:(BOOL)up{ 
      int animatedDistance; 
      int moveUpValue; 

      if (textField) { 
       moveUpValue = textField.frame.origin.y+ textField.frame.size.height; 
       } 
      else { 
       moveUpValue = textView.frame.origin.y+ textView.frame.size.height; 
      } 

      NSLog(@"moveup%d",moveUpValue); 

      UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation]; 

      if (orientation == UIInterfaceOrientationPortrait || 
       orientation == UIInterfaceOrientationPortraitUpsideDown) 
       { 
       if(textField){ 
        animatedDistance = 216-(650-moveUpValue-5); 
       } 
       else{ 
       animatedDistance = 216-(850-moveUpValue-5); 
       } 
       } 
      else 
      { 
       if(textField){ 
        animatedDistance = 162-(505-moveUpValue-5); 
       } 
       else{ 
        animatedDistance = 162-(750-moveUpValue-5); 
      } 
     } 
     NSLog(@"animated%d",animatedDistance); 

     if(animatedDistance>0) 
     { 
      const int movementDistance = animatedDistance; 
      const float movementDuration = 0.3f; 
      int movement = (up ? -movementDistance : movementDistance); 
      NSLog(@"movement portrait%d",movement); 
      [UIView beginAnimations: nil context: nil]; 
      [UIView setAnimationBeginsFromCurrentState: YES]; 
      [UIView setAnimationDuration: movementDuration]; 
      scrollview.frame = CGRectOffset(scrollview.frame, 0, movement);  
      [UIView commitAnimations]; 

     } 
    } 

我想現在我該如何解決這個問題,或者怎樣才能改變y軸爲0

請您做的幫助。 在前提前感謝

+1

您可以使用方向委託方法按照新方向更新animatedDistance。所以當你辭職鍵盤時,animatedDistance將按照currentOrientation。 – Ravin

+1

請參考以下鏈接你的答案.. http://stackoverflow.com/questions/8090063/how-to-manage-application-when-orientation-changes/8090119#8090119 –

+0

我已經使用了,和 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { //返回YES用於支撐取向 如果(interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown){ [自portraitFrames]; } else { [self landscapeFrames]; } return YES; } – iYahoo

回答

1

驗證設備方向更改時的animatedDistance設置。