键盘操作往往需要添加一个遮盖层，防止点击其他地方导致出错
1，部分声明
@property (nonatomic, strong) UIView *coverView;
@property (nonatomic, strong)UITapGestureRecognizer *sideslipTapGes;
2实现方法
- (void)showCoverView {
//_testview：弹出键盘后遮挡的view
_coverView=[[UIView alloc]init];
_coverView.frame=CGRectMake(0, 0, 320, 640);
_coverView.backgroundColor=[UIColor colorWithRed:1.f/255.f green:1.f/255.f blue:1.f/255.f alpha:0.4];
//单击覆盖层手势
_sideslipTapGes= [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handeTap)];
[_sideslipTapGes setNumberOfTapsRequired:1];
[_coverView addGestureRecognizer:_sideslipTapGes];
[self.view addSubview:_coverView];
_coverView.hidden=YES;
}
/**
*explain:点击遮盖层
*/
-(void)handeTap{
[self.view endEditing:YES];
}
#pragma mark- 监听键盘操作
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
[self registerForKeyboardNotifications];
}
- (void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];
}
// Called when the UIKeyboardDidShowNotification is sent.
- (void)keyboardWasShown:(NSNotification*)aNotification
{
_coverView.hidden=NO;
}
-(void)keyboardWillChangeFrame:(NSNotification*)notification
{
}
// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
_coverView.hidden=YES;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}
