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#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //为textField增加键盘事件 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(addKeyboardNoti) name:UITextFieldTextDidBeginEditingNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(removeKeyboardNoti) name:UITextFieldTextDidEndEditingNotification object:nil];}#pragma -mark -keyboard notificatin//键盘事件- (void)keyboardWillShow:(NSNotification *)notification { NSDictionary *info = [notification userInfo]; // keyboardHeight 为键盘高度 CGSize keyboardSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size; [self animateViewWithKeyboardHeight:keyboardSize.height];}- (void)keyboardWillHide:(NSNotification *)notification { [self animateViewWithKeyboardHeight:0.0];}- (void)animateViewWithKeyboardHeight:(CGFloat)keyboardHeight { NSTimeInterval animationDuration = 0.3f; CGFloat height = self.view.bounds.size.height; CGFloat width = self.view.bounds.size.width; CGFloat topSize = 0.0; CGFloat viewH = self.view.frame.size.height-64; CGFloat deviceHeight = [UIScreen mainScreen].bounds.size.height; CGFloat animateH = deviceHeight - viewH - keyboardHeight; if (animateH >= 0) { topSize = 0; CGRect toRect = CGRectMake(0, topSize, width, height); self.view.frame = toRect; } else { topSize = animateH; CGRect toRect = CGRectMake(0, topSize, width, height); [UIView animateWithDuration:animationDuration animations:^{ self.view.frame = toRect; }]; }}#pragma -mark -UITextFieldText Notification//增加键盘事件-(void)addKeyboardNoti{ NSLog(@"------addKeyboardNoti-------"); [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];}//移除键盘事件-(void)removeKeyboardNoti{ NSLog(@"------removeKeyboardNoti---------"); [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil]; [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end |
总结
以上所述是小编给大家介绍的iOS中只让textField使用键盘通知的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://www.cnblogs.com/yang-guang-girl/archive/2017/07/18/7201989.html
