UITableView和键盘滚动问题

最新推荐文章于 2023-04-11 15:11:27 发布

原创最新推荐文章于 2023-04-11 15:11:27 发布 · 134 阅读

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本文介绍了如何在iOS应用中实现键盘输入时屏幕布局的自动调整，包括键盘显示时增加视图尺寸和键盘隐藏时还原视图尺寸的功能。

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- (void)viewWillAppear:(BOOL)animated {
	[[NSNotificationCenter defaultCenter] addObserver:self 
											 selector:@selector(keyboardWillShow:) 
												 name:UIKeyboardWillShowNotification 
											   object:nil]; 
	
	[[NSNotificationCenter defaultCenter] addObserver:self 
											 selector:@selector(keyboardWillHide:) 
												 name:UIKeyboardWillHideNotification 
											   object:nil];
}

- (void)viewWillDisappear:(BOOL)animated {
	[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
	[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];

-(void) keyboardWillShow:(NSNotification *)note { 
	NSDictionary *info = [note userInfo];
	CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
	CGRect bkgndRect = self.ncTableView.frame;
	bkgndRect.size.height += kbSize.height;
	self.ncTableView.contentSize = bkgndRect.size;
//	CGFloat tmpY=activeField.frame.origin.y-((self.view.frame.size.height-kbSize.height)-activeField.frame.size.height-8);
//	if(tmpY>0){		
//		[self.scrollView setContentOffset:CGPointMake(0.0, tmpY) animated:YES];		
//	} 
} 

- (void)keyboardWillHide:(NSNotification*)aNotification{
	NSTimeInterval animationDuration=0.30f;
	[UIView beginAnimations:@"ResizeForKeyboard" context:nil];
	[UIView setAnimationDuration:animationDuration];
	
	
	NSDictionary *info = [aNotification userInfo];
	CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

	CGRect bkgndRect = self.ncTableView.frame;
	bkgndRect.size.height -= kbSize.height;
	//NIF_DEBUG(@"kbSize x:%f %f",kbSize.height,kbSize.width);
	
	self.ncTableView.contentSize = bkgndRect.size;
	[UIView commitAnimations];
	
	
	//[self.scrollView setContentOffset:CGPointMake(0.0, activeField.frame.origin.y - 15) animated:YES];
	//CGFloat tmpY=activeField.frame.origin.y-((self.view.frame.size.height-kbSize.height)-activeField.frame.size.height-8);
	
}