iOS 8更改键盘高度

这个问题与ios8的新自定义键盘无关，但与我为ios7应用创建的现有键盘无关。

当从选项列表中为用户提供选择时，您可以将UIPickerView用作键盘。但是在某些情况下，我只有两种选择，在这种情况下，我不喜欢选择器视图。因此，我创建了自己的UITableView键盘。该键盘的大小取决于表格视图中的行数（最大高度）。我将键盘的高度设置为ViewWilAppear。这在ios7中效果很好，但在ios8中，未考虑新高度。我不明白这是怎么回事。谁能帮助我在ios8中重新启用此功能。

ios7中的键盘（对不起，总的来说，我不知道如何缩放它）：

ios8中的键盘：

我的键盘代码：

@interface LBTableKeyBoardVC () <UITableViewDelegate, UITableViewDataSource>

// List view in table form
@property (weak, nonatomic) IBOutlet UITableView *tableView;

// Last selected item in list
@property (strong, nonatomic) NSIndexPath *lastSelected;

// flag for using selecting mark when selecting a item
@property (nonatomic) BOOL selectionMark;

@end



@implementation LBTableKeyBoardVC

#define MAX_HEIGHT_KEYBOARD     245


#pragma mark - View initialization

- (id)initWithData:(NSArray *)data {
    // set data
    self.listData = data;

    // init view controller
    self = [self initWithNibName:@"LBTableKeyBoardVC" bundle:nil];

    return self;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        [self setup];
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setup];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];

    [self.tableView reloadData];

//    [self setNewHeight:[NSNumber numberWithInteger:(self.listData.count * self.tableView.rowHeight)]];
    [self performSelector:@selector(setNewHeight:) withObject:[NSNumber numberWithInteger:(self.listData.count * self.tableView.rowHeight)] afterDelay:0];
}

- (void)setup {
    // initialize table view
    self.tableView.delegate = self;
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"ListItem"];

    // resize keyboard if necessary
    // This is the code that will make sure the view does not get resized to the default keyboard frame size
    self.view.autoresizingMask = UIViewAutoresizingNone;
    self.tableView.rowHeight = 44;

    self.selectionMark = YES;
}

- (void)dealloc {
    self.tableView.delegate = nil;
    self.delegate = nil;
    self.listData = nil;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

- (void)setNewHeight:(NSNumber *)height {
    NSInteger currentHeight = self.view.frame.size.height;
    NSInteger heightInt = [height integerValue];

    if (heightInt  != currentHeight) {
        if (heightInt > MAX_HEIGHT_KEYBOARD) {
            heightInt = MAX_HEIGHT_KEYBOARD;
        }

        self.view.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, heightInt);
    }
}


#pragma mark UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [self.listData count];
}

- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"ListItem";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    if (cell == nil) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    cell.textLabel.text = [self textForRowAtIndexPath:indexPath];
    cell.backgroundColor = [UIColor colorWithHexString:@"C7CBD3"];

    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (self.selectionMark) {
        // deselect old
        UITableViewCell *old = [self.tableView cellForRowAtIndexPath:self.lastSelected];
        old.accessoryType = UITableViewCellAccessoryNone;
        [old setSelected:NO animated:YES];

        // select new
        UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
        cell.accessoryType = UITableViewCellAccessoryCheckmark;
        cell.selectionStyle = UITableViewCellSelectionStyleDefault;
        [cell setSelected:YES animated:YES];

        // keep track of last selected
        self.lastSelected = indexPath;
    }

    [self.delegate keyboard:self.view selectedItem:[self textForRowAtIndexPath:indexPath]];
}


#pragma mark - List data

- (NSString *)textForRowAtIndexPath:(NSIndexPath *)indexPath {
    return [self.listData objectAtIndex:indexPath.row];
}

@end

根据要求编辑：

我按如下方式创建键盘：

- (LBTableKeyBoardVC *)genderKeyBoard {
    if (!_genderKeyBoard) {
        _genderKeyBoard = [self tableKeyBoardWithData:@[NSLocalizedString(@"Male", "Gender keyboard option for male"), NSLocalizedString(@"Female", "Gender keyboard option for female")]];
    }

    return _genderKeyBoard;
}

我UITextField在自定义中使用键盘UITableViewCell：

textFieldCell.textField.inputView = self.genderKeyBoard.view;