iOS解决TextField被键盘遮住的问题

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_

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