文章目录
  1. 1. 一. 前言
  2. 2. 二. 导航栏
    1. 2.1. 1. 导航栏、状态栏的显示与隐藏
    2. 2.2. 2. 自定义导航栏
  3. 3. 三. 键盘

一. 前言

平时在处理问题的时候,经常会遇到一些奇奇怪怪的问题,今天在这里将其记录下来。这里将会列举几个常用的UI问题进行讲解

二. 导航栏

iOS导航栏绝对是个巨坑。和很多朋友聊天都是自己实现了一套导航栏。当然,我个人是比较推崇用系统的方法。因为好处好几个:1.新特性推出之后简单易改 2.代码安装包体积的问题

1. 导航栏、状态栏的显示与隐藏

一般直接用系统的导航栏状态栏我们会这么做,优点:使用简单方便

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- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];

//恢复导航栏和状态栏
[self.navigationController setNavigationBarHidden:NO animated:YES];
[[UIApplication sharedApplication] setStatusBarHidden:NO];
}

- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];

//隐藏导航栏和状态栏
[self.navigationController setNavigationBarHidden:YES animated:YES];
[[UIApplication sharedApplication] setStatusBarHidden:YES];
}
- (BOOL)prefersStatusBarHidden
{
return YES;
}

2. 自定义导航栏

三. 键盘

UITableView上的键盘隐藏与弹起
以前碰到网上的代码实属坑,弹出的时候还有延时。凡事还是得自己动手试一试

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-(void)registerNotifications
{
//注册通知
CZ_AddObj2DeftNotiCenter(self, @selector(keyboardWillShow:), UIKeyboardWillShowNotification, nil);
CZ_AddObj2DeftNotiCenter(self, @selector(keyboardWillHide:), UIKeyboardWillHideNotification, nil);
}
#pragma mark- TableView
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
#pragma mark- keyboard
- (void)keyboardWillShow:(NSNotification*)notification
{
NSDictionary* info = [notification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
// NSInteger curve = [notification.userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue];
// NSTimeInterval duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];

CGRect oldFram = self.cardDetailTableView.frame;
self.cardDetailTableView.frame = CGRectMake(oldFram.origin.x,- kbSize.height, oldFram.size.width, oldFram.size.height);


UIEdgeInsets contentInsets = UIEdgeInsetsMake(kbSize.height, 0.0, 0.0, 0.0);
self.cardDetailTableView.contentInset = contentInsets;
self.cardDetailTableView.scrollIndicatorInsets = contentInsets;

if(_tableRecognizer) {
[_cardDetailTableView removeGestureRecognizer:_tableRecognizer];
}
_tableRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
_tableRecognizer.numberOfTapsRequired = 1;
[_cardDetailTableView addGestureRecognizer:_tableRecognizer];
}


- (void)keyboardWillHide:(NSNotification *)notification
{
// NSDictionary* info = [notification userInfo];
CGRect oldFram = self.cardDetailTableView.frame;
self.cardDetailTableView.frame = CGRectMake(oldFram.origin.x, 0.0, oldFram.size.width, oldFram.size.height);
self.cardDetailTableView.contentInset = UIEdgeInsetsZero;
self.cardDetailTableView.scrollIndicatorInsets = UIEdgeInsetsZero;
}

- (void)hideKeyboard
{
[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];
if(_tableRecognizer) {
_tableRecognizer.delegate = nil;
[_cardDetailTableView removeGestureRecognizer:_tableRecognizer];
}
}
文章目录
  1. 1. 一. 前言
  2. 2. 二. 导航栏
    1. 2.1. 1. 导航栏、状态栏的显示与隐藏
    2. 2.2. 2. 自定义导航栏
  3. 3. 三. 键盘