Question

在以下代码中，我希望titleTextAttributesForState:在创建UISegmentedControl后返回默认文本属性，

    simpleButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"My Button"]];
    simpleButton.segmentedControlStyle = UISegmentedControlStyleBar;
    simpleButton.momentary = YES;
    simpleButton.tintColor = [UIColor blueColor];
    NSLog(@"%@ - %@ - titleTextAttributesForState: %@", INTERFACENAME, NSStringFromSelector(_cmd) , [simpleButton titleTextAttributesForState:UIControlStateNormal]);

    [simpleButton setTitleTextAttributes:
     [NSDictionary dictionaryWithObjectsAndKeys:
      [UIFont boldSystemFontOfSize:12.0f], UITextAttributeFont, 

      nil] 
                                forState:UIControlStateNormal]; 

    NSLog(@"%@ - %@ - titleTextAttributesForState: %@", INTERFACENAME, NSStringFromSelector(_cmd) , [simpleButton titleTextAttributesForState:UIControlStateNormal]);

虽然你可以看到形成NSLog输出但它不是。

2011-11-03 17:28:45.492 io[80933:11903] IoUISESimpleButton - createElement - titleTextAttributesForState: (null)
2011-11-03 17:28:49.368 io[80933:11903] IoUISESimpleButton - createElement -     titleTextAttributesForState: {
Font = "<UICFFont: 0x99c2040> font-family: \"Helvetica\"; font-weight: bold; font-style: normal; font-size: 12px";}

我错过了什么吗？它也不会对属性进行编码。

我在- (void) encodeWithCoder:(NSCoder *)encoder

    [encoder encodeObject:simpleButton     forKey:@"simpleButton" ];

然后在我的-(id) initWithCoder:(NSCoder *)decoder

中

    simpleButton = [decoder decodeObjectForKey:@"simpleButton"];

它不保存我设置的setTitleTextAttributes: forState:。（更改字体，大小和颜色）

我最终不得不添加：

[encoder encodeObject:[simpleButton titleTextAttributesForState:UIControlStateNormal]     forKey:@"simpleButtonTitleTextAttributes" ];

和

    [simpleButton setTitleTextAttributes:[decoder decodeObjectForKey:@"simpleButtonTitleTextAttributes"] forState:UIControlStateNormal];

表示要保存的文本属性。

谢谢，

textTitleAttributesForState在设置之前是Null，不编码？

0 个答案: