首先在ios4以后,当UITableViewCell里有UITextfield,当输入时键盘遮盖了UITextField,UITableView是会自动上移,当如果要让tableView自动滚动的话,还需要设置一下tableView的contentInset。接下来介绍一下实现步骤,
首先监听键盘出现和消失:
//监听键盘出现和消失
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
收到通知在方法里面实现:
#pragma mark 键盘出现
-(void)keyboardWillShow:(NSNotification*)note{
CGRectkeyBoardRect=[note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
self.tableView.contentInset= UIEdgeInsetsMake(0,0, keyBoardRect.size.height,0);
}
#pragma mark 键盘消失
-(void)keyboardWillHide:(NSNotification*)note{
self.tableView.contentInset= UIEdgeInsetsZero;
}
这样就可以实现自动滚动了,另一种方法是键盘出现的时候把tableView的frame的高度减去键盘的高度,也可以实现,例如:
#pragma mark 键盘出现-(void)keyboardWillShow:(NSNotification *)note
{
CGRect keyBoardRect=[note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue]; self.tableView.frame = CGRectMake(0, 64, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height - 64 - keyBoardRect.size.height);}#pragma mark 键盘消失-(void)keyboardWillHide:(NSNotification *)note
{
self.tableView.frame = CGRectMake(0, 64, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height - 64);
}
推荐第一种方法,demo下载地址:https://github.com/yybchl/yoyo.git
网友评论