使程序化iOS UIView完全可访问

loadView

UIView

    - (void)loadView
    {
    CGRect viewRect = [[UIScreen mainScreen] applicationFrame];
    UIView *tmp = [[UIView alloc] initWithFrame:viewRect];
    [tmp setIsAccessibilityElement:NO];

UIView

UIImage* microphone = [UIImage imageNamed:@\"microphone.jpg\"];
    UIView* microphoneView = [[[UIView alloc] initWithFrame: CGRectMake(0,0,viewRect.size.width, microphone.size.height)] autorelease];
    [microphoneView setBackgroundColor:[UIColor colorWithPatternImage:microphone]];
    [microphoneView setIsAccessibilityElement:NO];
    [tmp addSubview:microphoneView];

UIButton

UILabel

UIButtonBarItem

self.recordImage = [UIImage imageNamed: @\"record_button.png\"];
self.stopRecordImage = [UIImage imageNamed: @\"stop_button.png\"];
self.recordButton.accessibilityTraits |= UIAccessibilityTraitStartsMediaSession;
self.recordButton = [[UIButton alloc  ] initWithFrame: CGRectMake((viewRect.size.width - recordImage.size.width)/2 , (microphone.size.height + (grayBkg.size.height - recordImage.size.height)/2), recordImage.size.width, recordImage.size.height)];
[self.recordButton setIsAccessibilityElement:YES];
[self.recordButton setAccessibilityLabel:  @\"toggle recording start\"];
[self.recordButton setImage: recordImage forState:UIControlStateNormal];
[self.recordButton addTarget: self action:@selector(processButton:) forControlEvents:UIControlEventTouchUpInside];
[tmp addSubview:recordButton];

....
[self setView:tmp];
[tmp release];

UIAccessibilityPostNotification

UIAccessibilityScreenChangedNotification

UILabel

UIButton