我有一个为其所有子类提供自定义菜单的类，但是由于我开始使用文本字段已经遇到键盘问题，所以我使用普通方法并将子类嵌入到调整大小的 uiscrollview 中。问题是滚动视图没有覆盖属于其超类的菜单。
想到的想法是在超类中创建一个滚动视图，并在滚动视图中放置菜单。我运行它，一切似乎都很好，直到我无法与屏幕上除了导航栏和菜单之外的任何东西进行交互，这让我相信子类 uielements 可能不是滚动视图的子视图。
问题甚至扩大了，因为在子类中我在情节提要和代码中创建了 uielements。我的问题是如何使在子类中创建并添加到 self.view 中的所有 uielements 成为超类滚动视图的子视图。
超一流
- (void)viewDidLoad
{
[super viewDidLoad];
//_scrollViewMain = [[UIScrollView alloc] initWithFrame:self.view.bounds];
//[self.view addSubview:_scrollViewMain];
_slideButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPlay target:self action:@selector(slide)];
[self.navigationItem setRightBarButtonItem:_slideButton];
_menuView = [[UIView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height - self.navigationController.navigationBar.frame.size.height - 44, self.view.bounds.size.width, 44)];
_menuView.backgroundColor = [UIColor colorWithRed:63.0/255.0 green:63.0/255.0 blue:63.0/255.0 alpha:1.0];
[self.view addSubview:_menuView];
//[_scrollViewMain addSubview:_menuView];
UIView *redFrameView = [[UIView alloc] initWithFrame:CGRectMake(0, _menuView.frame.size.height / 2, _menuView.frame.size.width, _menuView.frame.size.height / 2)];
[redFrameView setBackgroundColor:[UIColor colorWithRed:170.0/255.0 green:0.0 blue:0.0 alpha:0.5]];
[_menuView addSubview:redFrameView];
_menuButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_menuButton setImage:[UIImage imageNamed:@"19-gear.png"] forState:UIControlStateNormal];
[_menuButton addTarget:self action:@selector(menu) forControlEvents:UIControlEventTouchUpInside];
_menuButton.frame = CGRectMake(16.0, 9.0, 26.0, 26.0);
_addButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_addButton setImage:[UIImage imageNamed:@"13-plus.png"] forState:UIControlStateNormal];
[_addButton addTarget:self action:@selector(add) forControlEvents:UIControlEventTouchUpInside];
_addButton.frame = CGRectMake(16.0, 15.0, 14.0, 14.0);
_addButton.userInteractionEnabled = NO;
_addButton.alpha = 0.0;
_editButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_editButton setImage:[UIImage imageNamed:@"187-pencil.png"] forState:UIControlStateNormal];
[_editButton addTarget:self action:@selector(edit) forControlEvents:UIControlEventTouchUpInside];
_editButton.frame = CGRectMake(16.0, 15.0, 14.0, 14.0);
_editButton.userInteractionEnabled = NO;
_editButton.alpha = 0.0;
_deleteButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_deleteButton setImage:[UIImage imageNamed:@"11-x.png"] forState:UIControlStateNormal];
[_deleteButton addTarget:self action:@selector(delete) forControlEvents:UIControlEventTouchUpInside];
_deleteButton.frame = CGRectMake(16.0, 15.0, 14.0, 14.0);
_deleteButton.userInteractionEnabled = NO;
_deleteButton.alpha = 0.0;
_downloadButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_downloadButton setImage:[UIImage imageNamed:@"57-download.png"] forState:UIControlStateNormal];
[_downloadButton addTarget:self action:@selector(download) forControlEvents:UIControlEventTouchUpInside];
_downloadButton.frame = CGRectMake(16.0, 15.0, 11.0, 14.0);
_downloadButton.userInteractionEnabled = NO;
_downloadButton.alpha = 0.0;
_uploadButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_uploadButton setImage:[UIImage imageNamed:@"56-cloud.png"] forState:UIControlStateNormal];
[_uploadButton addTarget:self action:@selector(upload) forControlEvents:UIControlEventTouchUpInside];
_uploadButton.frame = CGRectMake(16.0, 15.0, 21.0, 14.0);
_uploadButton.userInteractionEnabled = NO;
_uploadButton.alpha = 0.0;
_shareButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_shareButton setImage:[UIImage imageNamed:@"124-bullhorn.png"] forState:UIControlStateNormal];
[_shareButton addTarget:self action:@selector(share) forControlEvents:UIControlEventTouchUpInside];
_shareButton.frame = CGRectMake(16.0, 15.0, 21.0, 14.0);
_shareButton.userInteractionEnabled = NO;
_shareButton.alpha = 0.0;
[_menuView addSubview:_addButton];
[_menuView addSubview:_editButton];
[_menuView addSubview:_deleteButton];
[_menuView addSubview:_downloadButton];
[_menuView addSubview:_uploadButton];
[_menuView addSubview:_shareButton];
[_menuView addSubview:_menuButton];
_isMenuVisible = NO;
}
第一次尝试，但滚动没有在超类中包含菜单视图
- (void)viewDidLoad
{
[super viewDidLoad];
[self registerForKeyboardNotifications];
self.title = [_exercise valueForKey:kExerciseName];
[super ableAdd];
[super ableDownload];
[super ableShare];
if ([[_exercise valueForKey:kExerciseIsDefault] boolValue]) {
[super ableUpload];
[super ableDelete];
}
_doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(done)];
_nameLabel.text = [_exercise valueForKey:kExerciseName];
_nameLabel.textColor = [UIColor colorWithRed:128.0/255.0 green:128.0/255.0 blue:128.0/255.0 alpha:1.0];
_categoryLabel.text = [[_exercise valueForKey:kExerciseEType] valueForKey:kExerciseTypeName];
_categoryLabel.textColor = [UIColor colorWithRed:128.0/255.0 green:128.0/255.0 blue:128.0/255.0 alpha:1.0];
_gearLabel.text = [[_exercise valueForKey:kGear] valueForKey:kGearName];
_gearLabel.textColor = [UIColor colorWithRed:128.0/255.0 green:128.0/255.0 blue:128.0/255.0 alpha:1.0];
_addRecordButton = [[UIButton alloc] initWithFrame:CGRectMake((self.view.frame.size.width - 30) / 2, 7, 30, 30)];
[_addRecordButton setImage:[UIImage imageNamed:@"85-trophy.png"] forState:UIControlStateNormal];
[_addRecordButton addTarget:self action:@selector(addRecord) forControlEvents:UIControlEventTouchUpInside];
[_toolView addSubview:_addRecordButton];
_showChartButton = [[UIButton alloc] initWithFrame:CGRectMake(self.view.frame.size.width - 50, 7, 30, 30)];
[_showChartButton setImage:[UIImage imageNamed:@"16-line-chart.png.png"] forState:UIControlStateNormal];
[_showChartButton addTarget:self action:@selector(showChart) forControlEvents:UIControlEventTouchUpInside];
[_toolView addSubview:_showChartButton];
_numberOfPages = 3;
_currentPage = 1;
_scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 174, 320, self.view.bounds.size.height - 262)];
_scrollView.pagingEnabled = YES;
_scrollView.contentSize = CGSizeMake(_scrollView.bounds.size.width * _numberOfPages, _scrollView.bounds.size.height);
_scrollView.delegate = self;
_scrollView.showsHorizontalScrollIndicator = NO;
_textView = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, _scrollView.bounds.size.width, _scrollView.bounds.size.height)];
_textView.contentSize = CGSizeMake(_scrollView.bounds.size.width, _scrollView.bounds.size.height);
_textView.text = [_exercise valueForKey:kExerciseOverview];
_textView.editable = NO;
_tableView = [[UITableView alloc] initWithFrame:CGRectMake(_scrollView.bounds.size.width * 1, 0, _scrollView.bounds.size.width, _scrollView.bounds.size.height)];
_tableView.contentSize = CGSizeMake(_scrollView.bounds.size.width, _scrollView.bounds.size.height);
_tableView.dataSource = self;
_tableView.delegate = self;
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:@selector(handleLongPress:)];
longPress.minimumPressDuration = 2.0;
longPress.delegate = (id<UIGestureRecognizerDelegate>)self;
[_tableView addGestureRecognizer:longPress];
_movieView = [[UIWebView alloc] initWithFrame:CGRectMake(_scrollView.bounds.size.width * 2, 0, _scrollView.bounds.size.width, _scrollView.bounds.size.height)];
_movieView.opaque = YES;
_movieView.backgroundColor = [UIColor whiteColor];
_movieView.autoresizesSubviews = YES;
[_movieView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[_exercise valueForKey:kExerciseUrlAddress]]]];
[_scrollView addSubview:_textView];
[_scrollView addSubview:_tableView];
[_scrollView addSubview:_movieView];
[_scrollView scrollRectToVisible:CGRectMake(_scrollView.bounds.size.width * 1, 0, _scrollView.bounds.size.width, _scrollView.bounds.size.height) animated:NO];
[_scrollViewMain addSubview:_scrollView];
//[self.view addSubview:_scrollView];
_pageControl.numberOfPages = _numberOfPages;
_pageControl.currentPage = _currentPage;
_records = [[NSMutableArray alloc] init];
_records = [[NSArray arrayWithArray:[[_exercise valueForKey:kExerciseERecords] allObjects]] mutableCopy];
NSSortDescriptor *sort = [[NSSortDescriptor alloc] initWithKey:kExerciseRecordRecordDate ascending:NO];
[_records sortUsingDescriptors:[NSArray arrayWithObject:sort]];
}
- (void)viewDidDisappear:(BOOL)animated
{
if (self.editing) {
[super setPan];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
- (void)setEditing:(BOOL)editing animated:(BOOL)animated
{
[super setEditing:editing animated:animated];
[_tableView setEditing:editing animated:animated];
[super setPan];
if (self.navigationItem.rightBarButtonItem == nil) {
self.navigationItem.rightBarButtonItem = _doneButton;
}
_addRecordButton.enabled = !editing;
_showChartButton.enabled = !editing;
if (![[_exercise valueForKey:kExerciseIsDefault] boolValue]) {
[super ableUpload];
[super ableDelete];
_textView.editable = editing;
}
}
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWasShown:)
name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillBeHidden:)
name:UIKeyboardWillHideNotification object:nil];
}
// Called when the UIKeyboardDidShowNotification is sent.
- (void)keyboardWasShown:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
_scrollViewMain.contentInset = contentInsets;
_scrollViewMain.scrollIndicatorInsets = contentInsets;
// If active text field is hidden by keyboard, scroll it so it's visible
// Your application might not need or want this behavior.
CGRect aRect = self.view.frame;
aRect.size.height -= kbSize.height;
if (!CGRectContainsPoint(aRect, _activeField.frame.origin) ) {
CGPoint scrollPoint = CGPointMake(0.0, _activeField.frame.origin.y-kbSize.height);
[_scrollViewMain setContentOffset:scrollPoint animated:YES];
}
}
// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
_scrollViewMain.contentInset = contentInsets;
_scrollViewMain.scrollIndicatorInsets = contentInsets;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
_activeField = textField;
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
_activeField = nil;
}