iOS Dev (54) 鍵盤彈出後收合時View隨之移動

iOS Dev (54) 鍵盤彈出後收合時View隨之移動

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• 添加監聽

  [[NSNotificationCenter defaultCenter] addObserver:self                                         selector:@selector(changeContentViewPosition:)                                             name:UIKeyboardWillShowNotification                                           object:nil];[[NSNotificationCenter defaultCenter] addObserver:self                                         selector:@selector(changeContentViewPosition:)                                             name:UIKeyboardWillHideNotification                                           object:nil];

  移除監聽

  [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];

  事件處理函數

  - (void) changeContentViewPosition:(NSNotification *)notification{    NSDictionary *userInfo = [notification userInfo];    NSValue *value = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];    CGFloat keyBoardEndY = value.CGRectValue.origin.y;    NSNumber *duration = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];    NSNumber *curve = [userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey];    [UIView animateWithDuration:duration.doubleValue animations:^{        [UIView setAnimationBeginsFromCurrentState:YES];        [UIView setAnimationCurve:[curve intValue]];        self.view.center = CGPointMake(self.view.center.x, keyBoardEndY - STATUS_BAR_HEIGHT - self.view.bounds.size.height/2.0);    }];}

  Reference
  • http://www.cnblogs.com/programmer-blog/p/3265110.html