iOS中只让textField使用键盘通知的实例代码
代码：
#import"ViewController.h"
@interfaceViewController()
@end
@implementationViewController
-(void)viewDidLoad{
[superviewDidLoad];
//Doanyadditionalsetupafterloadingtheview,typicallyfromanib.
//为textField增加键盘事件
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(addKeyboardNoti)name:UITextFieldTextDidBeginEditingNotificationobject:nil];
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(removeKeyboardNoti)name:UITextFieldTextDidEndEditingNotificationobject:nil];
}
#pragma-mark-keyboardnotificatin
//键盘事件
-(void)keyboardWillShow:(NSNotification*)notification{
NSDictionary*info=[notificationuserInfo];
//keyboardHeight为键盘高度
CGSizekeyboardSize=[[infoobjectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue].size;
[selfanimateViewWithKeyboardHeight:keyboardSize.height];
}
-(void)keyboardWillHide:(NSNotification*)notification{
[selfanimateViewWithKeyboardHeight:0.0];
}
-(void)animateViewWithKeyboardHeight:(CGFloat)keyboardHeight{
NSTimeIntervalanimationDuration=0.3f;
CGFloatheight=self.view.bounds.size.height;
CGFloatwidth=self.view.bounds.size.width;
CGFloattopSize=0.0;
CGFloatviewH=self.view.frame.size.height-64;
CGFloatdeviceHeight=[UIScreenmainScreen].bounds.size.height;
CGFloatanimateH=deviceHeight-viewH-keyboardHeight;
if(animateH>=0){
topSize=0;
CGRecttoRect=CGRectMake(0,topSize,width,height);
self.view.frame=toRect;
}else{
topSize=animateH;
CGRecttoRect=CGRectMake(0,topSize,width,height);
[UIViewanimateWithDuration:animationDurationanimations:^{
self.view.frame=toRect;
}];
}
}
#pragma-mark-UITextFieldTextNotification
//增加键盘事件
-(void)addKeyboardNoti
{
NSLog(@"------addKeyboardNoti-------");
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(keyboardWillShow:)name:UIKeyboardWillShowNotificationobject:nil];
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(keyboardWillHide:)name:UIKeyboardWillHideNotificationobject:nil];
}
//移除键盘事件
-(void)removeKeyboardNoti
{
NSLog(@"------removeKeyboardNoti---------");
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillShowNotificationobject:nil];
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillHideNotificationobject:nil];
}
-(void)didReceiveMemoryWarning{
[superdidReceiveMemoryWarning];
//Disposeofanyresourcesthatcanberecreated.
}
@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毛票票网站的支持！