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我试图在我的 iOS6 通用应用程序中使用透明的 UIToolbar 作为 UITextField 的 inputAccessoryView。

在 iOS6 iphone 上运行时，工具栏看起来是透明的，但有一个顶部边框。而这只发生在 iOS6 iphone 上。不在 iOS6 ipad 设备上，不在 iOS6 ipad 模拟器上，甚至在 iOS6 iPhone 模拟器上。这是设备和模拟器的屏幕截图...

iOS6设备截图

iOS6 模拟器截图

这是我的代码...

// Transparent Toolbar.m

@implementation TransparentToolbar
- (void)drawRect:(CGRect)rect
{
    CGContextRef context = UIGraphicsGetCurrentContext();
    [[UIColor clearColor] setFill];
    CGContextFillRect(context, self.bounds);
}
@end

// ViewController.m

#import "ViewController.h"
#import "TransparentToolbar.h"

@interface ViewController () {
    TransparentToolbar *_accessoryView;
}
@end

@implementation ViewController
@synthesize textField;
- (TransparentToolbar *)_accessoryView
{
    if (!_accessoryView) {
        _accessoryView = [[TransparentToolbar alloc] init];
        [_accessoryView sizeToFit];
        [_accessoryView setTranslucent:YES];

        UIBarButtonItem *flexButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];

        UIButton *resignKeyboardButton = [UIButton buttonWithType:UIButtonTypeInfoDark];
        [resignKeyboardButton setFrame:CGRectMake(0, 0, 44, 44)];
        [resignKeyboardButton setTitle:@"DONE" forState:UIControlStateNormal];
        [resignKeyboardButton addTarget:self action:@selector(didTapResignKeyboardButton:) forControlEvents:UIControlEventTouchUpInside];

        UIBarButtonItem *resignKeyboardBarButton =[[UIBarButtonItem alloc] initWithCustomView:resignKeyboardButton];

        NSArray *itemsArray = [NSArray arrayWithObjects:flexButton, resignKeyboardBarButton, nil];
        [_accessoryView setItems:itemsArray];
    }

    return _accessoryView;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    [textField setInputAccessoryView:[self _accessoryView]];
}

- (void)didTapResignKeyboardButton:(UIBarButtonItem *)aButtonItem
{
    [textField resignFirstResponder];
}
@end

这里可能出了什么问题？

4

0 回答 0