13518219792
首先，我们在ViewController.h中
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@interface ViewController :UIViewController
@property (strong,nonatomic)UIScrollView* scrollView;
@property (strong,nonatomic)UITextField* textField;
@end
之后在ViewController.m
@implementation ViewController
- (void)viewDidLoad
{
[superviewDidLoad];
self.scrollView = [[UIScrollViewalloc]initWithFrame:CGRectMake(0,0,320,600)];
[self.viewaddSubview:self.scrollView];
self.textField = [[UITextFieldalloc]initWithFrame:CGRectMake(50,400,100,30)];
self.textField.backgroundColor = [UIColorwhiteColor];
[self.scrollViewaddSubview:self.textField];
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(textShowBegin:)name:UIKeyboardWillShowNotificationobject:nil];
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(keyBoardDidHidden)name:UIKeyboardWillHideNotificationobject:nil];
[self.textFieldaddTarget:selfaction:@selector(textFieldResign)forControlEvents:UIControlEventEditingDidEndOnExit];
}
-(void)keyBoardDidHidden
{
self.scrollView.contentInset =UIEdgeInsetsZero;
}
-(void)textFieldResign
{
[self.textFieldresignFirstResponder];
}
-(void)textFieldDidBeginEditing:(UITextField *)textField
{
self.textField = textField;
}
-(void)textShowBegin:(NSNotification*)aNotification
{
NSDictionary* info = aNotification.userInfo;
NSLog(@"%@",info);
CGSize kbSize = [[infoobjectForKey:UIKeyboardFrameBeginUserInfoKey]CGRectValue].size;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0, 0, kbSize.height, 0);
self.scrollView.contentInset = contentInsets;
//获取整个视图的大小和位置
CGRect aRect = self.view.frame;
aRect.size.height -= kbSize.height;
if (!CGRectContainsPoint(aRect, self.textField.frame.origin)) {
CGPoint scrollPoint = CGPointMake(0, self.textField.frame.origin.y - kbSize.height);
[self.scrollViewsetContentOffset:scrollPoint animated:YES];
}
}
下载地址 "TextFieldKB1119.zip" http://vdisk.weibo.com/s/Et2R_
