帶UItextfield和動畫的UItableView？

Question

經過大量的反覆試驗，我放棄並提出了問題。我見過很多有類似問題的人，但無法得到所有答案。

我有一個UITableView，其中我有35個文本文件一個在另一個下面。

當我嘗試滾動和編輯UITableView底部的單元格時，我無法設法讓我的單元格正確定位在鍵盤上方。

我見過很多關於改變視圖大小的答案，但是目前爲止它們都沒有很好地工作。

任何人都可以澄清「正確」的方式來做到這一點與具體的代碼示例？

以下是我的.m文件：

#import "EditProfilePage.h" 


@implementation EditProfilePage 
#define kOFFSET_FOR_KEYBOARD 70.0 


static const CGFloat KEYBOARD_ANIMATION_DURATION = 0.3; 
static const CGFloat PORTRAIT_KEYBOARD_HEIGHT = 216; 

static const CGFloat CELL_HEIGHT = 44; 

static const CGFloat TOOLBAR_HEIGHT = 44; 
static const CGFloat WINDOW_MINUS_TOOLBAR_HEIGHT_PORTRAIT = 460; 



@synthesize scrollView,tableContents,txtField,allTextField,tableView; 

@synthesize txtUserName ,txtFirstName ,txtLastName ,txtNickName,txtDisplayName,txtEmail,txtWebSite,txtAboutMe ,txtNewPassword ,txtPasswordAgain,btnSubmit ; 

//extended profile information 
@synthesize txtPayPalEmail ,txtActiveMemPk ,txtMemPkExpireDate,lbl,textFieldBeingEdited; 

//business profile information 
@synthesize txtBusinessName ,txtAbnAcn ,txtContactName ,txtPhone ,txtFax ,txtMobile ,txtBusinessEmail ,txtFacebookLink ,txtLinkedinLink ,txtMySpaceLink; 
@synthesize txtBlogLink ,txtInstanMessage ,txtWebsite ,txtStreet ,txtCitySuburb ,txtZipCode ,txtState ,txtTradingHour; 
@synthesize txtActiveOfService ,txtTradeOnWeekend ,txtProduct , txtService ,txtPickUpAndDelivery; 




- (void)viewDidLoad 
{ 

    [super viewDidLoad]; 

    allTextField=[[NSMutableArray alloc] initWithObjects:@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",nil]; 

    [self.scrollView setContentSize:CGSizeMake(320, (CELL_HEIGHT * [self.allTextField count]))]; 
    ![enter image description here][1][self.tableView setFrame:CGRectMake(0, 0,320, (CELL_HEIGHT * [self.allTextField count]))]; 



} 

-(void)viewWillAppear:(BOOL)animated 
{ 
    [[NSNotificationCenter defaultCenter] 
    addObserver:self 
    selector:@selector(keyboardWillShow:) 
    name:UIKeyboardWillShowNotification 
    object:nil]; 

    [[NSNotificationCenter defaultCenter] 
    addObserver:self 
    selector:@selector(keyboardWillHide:) 
    name:UIKeyboardWillHideNotification 
    object:nil]; 

    self.navigationController.navigationBarHidden=YES; 
} 
// 
-(void)viewWillDisappear:(BOOL)animated 
{ 
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil]; 
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil]; 
     //self.navigationController.navigationBarHidden=NO; 
} 


-(void) keyboardWillShow:(NSNotification *)note 
{ 
    CGRect keyboardBounds; 
    [[note.userInfo valueForKey:UIKeyboardBoundsUserInfoKey] getValue: &keyboardBounds]; 
    // keyboardHeight = keyboardBounds.size.height; 
// if (keyboardIsShowing == NO) 
    { 
     //keyboardIsShowing = YES; 
//  CGRect frame = self.view.frame; 
//  frame.size.height -= keyboardHeight; 

     [UIView beginAnimations:nil context:NULL]; 
     [UIView setAnimationBeginsFromCurrentState:YES]; 
     [UIView setAnimationDuration:0.3f]; 
     //self.view.frame = frame; 
     [UIView commitAnimations]; 
    } 
} 

- (void) textFieldDidBeginEditing:(UITextField *)textField 
{ 
    CGRect frame = textField.frame; 
    CGFloat rowHeight = self.tableView.rowHeight; 
    if (textField == txtUserName.tag) 
    { 
     frame.origin.y += rowHeight * txtUserName.tag; 
    } 
    // else if (textField == textFields[CELL_FIELD_TWO]) 
// { 
//  frame.origin.y += rowHeight * CELL_FIELD_TWO; 
// } 
// else if (textField == textFields[CELL_FIELD_THREE]) 
// { 
//  frame.origin.y += rowHeight * CELL_FIELD_THREE; 
// } 
// else if (textField == textFields[CELL_FIELD_FOUR]) 
// { 
//  frame.origin.y += rowHeight * CELL_FIELD_FOUR; 
// } 
    CGFloat viewHeight = self.tableView.frame.size.height; 
    CGFloat halfHeight = viewHeight/2; 
    CGFloat midpoint = frame.origin.y + (textField.frame.size.height/2); 
    if (midpoint < halfHeight) 
    { 
     frame.origin.y = 0; 
     frame.size.height = midpoint; 
    } 
    else 
    { 
     frame.origin.y = midpoint; 
     frame.size.height = midpoint; 
    } 
    [self.tableView scrollRectToVisible:frame animated:YES]; 
} 



-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    // NSArray *lstData=[self.tableContents objectForKey:[self.txtField objectAtIndex:section]]; 
    // return[lstData count]; 

    return[allTextField count]; 
} 




-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 

    static NSString *cellIdentifier =@"Cell"; 


    UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:cellIdentifier]; 

    if (cell==nil) 
    { 
     cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; 
     cell.accessoryType=UITableViewCellAccessoryNone; 
     cell.selectionStyle=UITableViewCellSelectionStyleNone; 
     cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 
    } 

    if ([indexPath row]==0) 
    { 
     txtUserName=[[UITextField alloc] initWithFrame:CGRectMake(0,0,150,25)]; 
     txtUserName.placeholder=@"User Name"; 
     //txtUserName.backgroundColor = [UIColor grayColor]; 
     [txtUserName addTarget:self action:@selector(textFieldDone:) forControlEvents:UIControlEventEditingDidEndOnExit]; 
     cell.accessoryView=txtUserName; 
     cell.textLabel.text=@"User Name:"; 
     //cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 

     txtUserName.keyboardType = UIKeyboardTypeDefault; 
     txtUserName.returnKeyType = UIReturnKeyDone; 
     txtUserName.clearsOnBeginEditing = NO; 
     txtUserName.textAlignment = UITextAlignmentLeft; 

     // (The tag by indexPath.row is the critical part to identifying the appropriate 
     // row in textFieldDidBeginEditing and textFieldShouldEndEditing below:) 

     txtUserName.tag=indexPath.row; 

     //txtUserName.delegate = self; 

     txtUserName.clearButtonMode = UITextFieldViewModeWhileEditing; 
     [txtUserName setEnabled: YES]; 

     [cell addSubview:txtUserName]; 

     [txtUserName release]; 



     //cell.font = [UIFont fontWithName:@"impact" size:10 line:2]; 

    } 

    if ([indexPath row]==1) 
    { 
     txtFirstName=[[UITextField alloc] initWithFrame:CGRectMake(0,0,150,25)]; 
     txtFirstName.placeholder=@"First Name"; 
     cell.accessoryView=txtFirstName; 
     cell.textLabel.text=@"First Name:"; 
     //cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 

    } 

    if ([indexPath row]==2) 
    { 
     txtLastName=[[UITextField alloc] initWithFrame:CGRectMake(0,0,150,25)]; 
     txtLastName.placeholder=@"Last Name"; 
     cell.accessoryView=txtLastName; 
     cell.textLabel.text=@"Last Name:"; 
     //cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 


    } 

    if ([indexPath row]==3) 
    { 
     txtNickName=[[UITextField alloc] initWithFrame:CGRectMake(0,0,150,25)]; 
     txtNickName.placeholder=@"Nick Name"; 
     cell.accessoryView=txtNickName; 
     cell.textLabel.text=@"Nick Name:"; 
     //cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 


    } 

    if ([indexPath row]==4) 
    { 
     txtDisplayName=[[UITextField alloc] initWithFrame:CGRectMake(0,0,150,25)]; 
     txtDisplayName.placeholder=@"Display Name"; 
     cell.accessoryView=txtDisplayName; 
     cell.textLabel.text=@"Display Name:"; 
     //cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 


    } 

    if ([indexPath row]==5) 
    { 
     txtEmail=[[UITextField alloc] initWithFrame:CGRectMake(0,0,150,25)]; 
     txtEmail.placeholder=@"Email"; 
     cell.accessoryView=txtEmail; 
     cell.textLabel.text=@"Email ID:"; 
     cell.font = [UIFont fontWithName:@"Helvetica" size:14]; 


    } 



    return cell; 
} 







@end 

Answer 1

你需要做滾動視圖高，這樣就可以滾動鍵盤上方的較低文本字段。

下面是介紹如何做到這一點的文章：

http://iosdevelopertips.com/user-interface/adjust-textfield-hidden-by-keyboard.html