我有一个奇怪的错误，它只发生在 Xcode 6 的 iPhone 6 模拟器中。我有一个通用组件，它扩展了 UITextField 并在屏幕底部显示一个 pickerView 作为 inputView。
如果我使用 iPhone5 或 iPhone5s 测试我的应用程序，它会按预期工作：inputView 和 inputAccessoryView 显示正确。但是如果我切换到 iPhone 6 或 Plus 模拟器，只有 inputAccessoryView 显示在屏幕底部，inputView 没有显示。
这是我的代码：
@interface DropDownTextField : UITextField
@property (strong,nonatomic) UIPickerView* pickerView;
@property (strong,nonatomic) UIToolbar *toolBar;
@property CGFloat originalFontSize;
@property (nonatomic) id<UIPickerViewDelegate> pickerDelegate;
@property (nonatomic) id<UIPickerViewDataSource> pickerDataSource;
- (CGFloat)requiredFontSize;
- (void)setDropdownMode:(BOOL)enabled;
@end
@implementation DropDownTextField
-(id)initWithCoder:(NSCoder *)aDecoder {
if(self = [super initWithCoder:aDecoder]) {
self.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
self.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
[self setFont:[UIFont mediumRegular]];
_originalFontSize = self.font.pointSize;
self.layer.borderWidth = 1.0f;
CGRect frame = [self frame];
// rightview dropdown arrow
UIImageView *dropDownImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, (frame.size.height-8)/2, 14.0f, 8.0f)];
UIImage *dropDownImage = [UIImage imageNamed:@"DisclosureDown"];
[dropDownImageView setImage:dropDownImage];
dropDownImageView.contentMode = UIViewContentModeScaleAspectFit;
UIView *dropDownView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 25.0f, frame.size.height)];
[dropDownView addSubview:dropDownImageView];
self.rightView = dropDownView;
self.rightViewMode = UITextFieldViewModeAlways;
[self.rightView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(becomeFirstResponder)]];
// picker view
_pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0,0,SCREEN_WIDTH,216)];
_pickerView.showsSelectionIndicator = YES;
[_pickerView setBackgroundColor:[UIColor colorWithRed:245/255.0 green:245/255.0 blue:245/255.0 alpha:1.0f]];
self.inputView = _pickerView;
// picker view toolbar
_toolBar= [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,SCREEN_WIDTH,44)];
[_toolBar setBackgroundColor:[UIColor colorWithRed:229/255.0 green:229/255.0 blue:229/255.0 alpha:1.0f]];
[_toolBar setBarStyle:UIBarStyleBlackTranslucent];
// to align button to the right
UIBarButtonItem *flex = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
UIBarButtonItem *barButtonDone = [[UIBarButtonItem alloc] init];
[barButtonDone setTarget:self];
[barButtonDone setAction:@selector(changeSelectionFromLabel:)];
[barButtonDone setTitle:NSLocalizedString(@"ok", @"")];
[barButtonDone setTintColor:[UIColor colorWithRed:229/255.0 green:229/255.0 blue:229/255.0 alpha:1.0f]];
[barButtonDone setStyle:UIBarButtonItemStylePlain];
[barButtonDone setTitleTextAttributes:[UIFont pickerTitleTextAttributes] forState:UIControlStateNormal];
UIBarButtonItem *barButtonCancel = [[UIBarButtonItem alloc] init];
[barButtonCancel setTarget:self];
[barButtonCancel setAction:@selector(dismissPickerView:)];
[barButtonCancel setTitle:NSLocalizedString(@"cancel", @"")];
[barButtonCancel setTintColor:[UIColor colorWithRed:229/255.0 green:229/255.0 blue:229/255.0 alpha:1.0f]];
[barButtonCancel setStyle:UIBarButtonItemStylePlain];
[barButtonCancel setTitleTextAttributes:[UIFont pickerTitleTextAttributes] forState:UIControlStateNormal];
self.toolBar.items = [[NSArray alloc] initWithObjects:barButtonCancel,flex,barButtonDone,nil];
self.inputAccessoryView = _toolBar;
}
return self;
}
有人遇到过这样的问题吗？有什么想法可以解决吗？
PS：我已经尝试过清除构建目录、清理/重建项目、停止/重新启动模拟器和 xcode 方法。不工作。