我正在测试我的ios应用程序，其部署目标为5.0，基本SDK为6.1。
在ios 5.0和ios 5.1中一切正常，但在ios 6.0中，我遇到了在索引处插入子视图的问题。子视图是一个tableview，父视图是一个uialertview，它是作为特殊类“UIAlertTableView”创建的。出现警报视图，但似乎没有插入任何内容。在此之前，我已经修复了superview的自动旋转问题（在横向上），因为众所周知，ios 6.0处理旋转的方式不同，所以现在我的superview正确显示，但正如我所说，这个alertview弹出没有表现在。我想为tableview和superview修复自转问题吗？我不认为这是必要的，因为tableview没有在导入的类中声明，是在父视图控制器中声明的。或者这可能是因为在ios 6.0中弃用了某种方法？
/*UIAlertTableView.m (the imported object class)*/
@interface UIAlertView (private)
- (void)layoutAnimated:(BOOL)fp8;
@end
@implementation UIAlertTableView
@synthesize tableWidth;
@synthesize tableHeight;
@synthesize lowestView;
@synthesize kTablePadding;
@synthesize alertDelegate;
- (void)layoutAnimated:(BOOL)fp8 {
[super layoutAnimated:fp8];
[self setFrame:CGRectMake(self.frame.origin.x, self.frame.origin.y - tableExtHeight/2, self.frame.size.width, self.frame.size.height + tableExtHeight)];
// We get the lowest non-control view (i.e. Labels) so we can place the table view just below
int i = 0;
while (![[self.subviews objectAtIndex:i] isKindOfClass:[UIControl class]]) {
lowestView = [self.subviews objectAtIndex:i];
i++;
}
tableWidth = 262.0f;
for (UIView *sv in self.subviews) {
// Move all Controls down
if ([sv isKindOfClass:[UIControl class]]) {
sv.frame = CGRectMake(sv.frame.origin.x, sv.frame.origin.y + tableExtHeight, sv.frame.size.width, sv.frame.size.height);
}
}
}
- (void)show{
[self prepare];
[super show];
}
- (void)prepare {
if (tableHeight == 0) {
tableHeight = 150.0f;
}
kTablePadding = 8.0f;
tableExtHeight = tableHeight + 2 * kTablePadding;
[self setNeedsLayout];
}
@end
/*the UIAlertTableView class is imported into the myViewController header file*/
/*myViewController.m*/
@implementation myViewController
@synthesize myTableView;
@synthesize alert;
@synthesize imageView;
@synthesize scrollView;
@synthesize models;
@synthesize picked;
#pragma myTableView
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [models count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
// now configure the cell
cell.textLabel.text = [models objectAtIndex:[indexPath row]];
[cell setAccessibilityTraits: UIAccessibilityTraitButton];
return cell;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (returnedSetting && (indexPath.row == prevSelectedIndex)){
returnedSetting = FALSE;
}
}
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
//index path to row that's selected
NSIndexPath *myIndexPath = [myTableView indexPathForSelectedRow];
UITableViewCell *cell = [myTableView cellForRowAtIndexPath:myIndexPath];
labelText = cell.textLabel.text;
selectedModel = cell.textLabel.text;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
NSIndexPath *myIndexPath = [tableView indexPathForSelectedRow];
prevSelectedIndex = myIndexPath.row;
UITableViewCell *cell = [tableView cellForRowAtIndexPath:myIndexPath];
[alert dismissWithClickedButtonIndex:0 animated:YES];
labelText = cell.textLabel.text;
selectedModel = cell.textLabel.text;
[self dismissModalViewControllerAnimated:YES];
}
-(void)removeButton{
[UIView animateWithDuration:1.5
delay:1.5
options:UIViewAnimationCurveEaseInOut
animations:^ {
eButton.alpha = 0;
}
completion:^(BOOL finished) {
}];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
-(void)showAlertFor:(NSTimer *)timer{
[alert show];
myTableView.frame = CGRectMake(11.0f, alert.lowestView.frame.origin.y + alert.lowestView.frame.size.height + 2 * alert.kTablePadding, alert.tableWidth, alert.tableHeight);
[alert insertSubview:myTableView atIndex:1];
[myTableView performSelector:@selector(flashScrollIndicators) withObject:nil afterDelay:.3];
}
-(void)bringupAlertTableViewFor:(NSString *)dName atLocationOnScreen:(CGPoint)newPoint{
if (([dName isEqualToString:@"hello"]){
picked =TRUE;
myTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 0.0f, 0.0f) style:UITableViewStylePlain];
alert = [[UIAlertTableView alloc] initWithTitle:dName
message:@"Choose from the table below:"
delegate:self
cancelButtonTitle:@"Cancel"
otherButtonTitles:nil];
[alert setDelegate: alert.alertDelegate];
models = [[NSMutableArray alloc]init];
myTableView.delegate = self;
myTableView.dataSource = self;
NSEntityDescription *entitydesc = [NSEntityDescription entityForName:@"Decisions" inManagedObjectContext:context];
NSFetchRequest *request = [[NSFetchRequest alloc]init];
[request setEntity:entitydesc];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"dName == %@", dName];
[request setPredicate: predicate];
NSError *error;
//matches found
NSArray *matchingData = [context executeFetchRequest: request error: &error];
for (NSManagedObject *obj in matchingData) {
[models addObject:[NSString stringWithFormat:@"%@",[obj valueForKey: @"model"]]];
}
alert.tableHeight = 120;
[alert show];
myTableView.frame = CGRectMake(11.0f, alert.lowestView.frame.origin.y + alert.lowestView.frame.size.height + 2 * alert.kTablePadding, alert.tableWidth, alert.tableHeight);
[alert insertSubview:myTableView atIndex:1];
[myTableView performSelector:@selector(flashScrollIndicators) withObject:nil afterDelay:.3];
}else{
picked = TRUE;
frame.origin.x = newPoint.x - 29; // new x coordinate
frame.origin.y = 240; // new y coordinate
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration: 1.5];
[UIView commitAnimations];
myTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 0.0f, 0.0f) style:UITableViewStylePlain];
alert = [[UIAlertTableView alloc] initWithTitle:dName
message:@"Select a choice:"
delegate:self
cancelButtonTitle:@"Cancel"
otherButtonTitles:nil];
[alert setDelegate: alert.alertDelegate];
models = [[NSMutableArray alloc]init];
myTableView.delegate = self;
myTableView.dataSource = self;
NSEntityDescription *entitydesc = [NSEntityDescription entityForName:@"Decisions" inManagedObjectContext:context];
NSFetchRequest *request = [[NSFetchRequest alloc]init];
[request setEntity:entitydesc];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"deName == %@", dName];
[request setPredicate: predicate];
NSError *error;
//matches found
NSArray *matchingData = [context executeFetchRequest: request error: &error];
for (NSManagedObject *obj in matchingData) {
[models addObject:[NSString stringWithFormat:@"%@",[obj valueForKey: @"model"]]];
}
alert.tableHeight = 120;
[NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(showAlertFor:) userInfo:nil repeats:NO];
previousPoint = newPoint;
}
}
-(IBAction)singleTapImageView:(UITapGestureRecognizer *)sender {
CGPoint pt = [sender locationInView: sender.view];
//find out which was pressed
if ( ((pt.x >= 52) && (pt.x <= 79)) && ((pt.y >= 269) && (pt.y <= 296))){
CGPoint newPoint = {45, (257 + 55)};
[self bringupAlertTableViewFor:@"Choice1" atLocationOnScreen:newPoint];
}
}
#pragma mark - View lifecycle
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
-(void)scrollViewDidEndScrollingAnimation:(UIScrollView *)sView{
[self removeButton];
}
-(void)scrollViewDidScroll:(UIScrollView *)sView{
eButton.alpha = .7;
}
-(void)scrollViewDidEndDecelerating:(UIScrollView *)sView
{
[self removeButton];
}
-(void)exitButtonPressed{
[self dismissModalViewControllerAnimated:YES];
}
- (void)viewDidLoad
{
UIImage *imageS = [UIImage imageNamed:@"ti.png"];
imageView = [[TouchDetectingImageView alloc]initWithImage:imageS];
[imageView setDelegate:self];
imageView.frame = CGRectMake(20, 25, imageS.size.width,imageS.size.height);
CGFloat newScrollWidth = imageView.image.size.width + 20;
[scrollView setContentSize:(CGSizeMake(newScrollWidth, imageView.image.size.height))];
[scrollView addSubview: imageView];
imageView.contentMode = UIViewContentModeScaleToFill;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapImageView:)];
singleTap.numberOfTapsRequired = 1;
[scrollView addGestureRecognizer:singleTap];
UIImage *img = [UIImage imageNamed:@"backbutton.png"];
CGRect frameForButton = CGRectMake(0, 3, img.size.width, img.size.height);
eButton = [[exitButton alloc] initWithFrame:frameForButton];
[eButton setDelegate:self];
[eButton addTarget:self action:@selector(exitButtonPressed) forControlEvents:UIControlEventTouchUpInside];
UITapGestureRecognizer *buttonTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(exitButtonPressed)];
buttonTap.numberOfTapsRequired = 1;
[eButton addGestureRecognizer:buttonTap];
eButton.alpha = 0;
[self.view addSubview:eButton];
[super viewDidLoad];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewDidUnload
{
[self setScrollView:nil];
[self setImageView:nil];
[self setmyTableView:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
[scrollView flashScrollIndicators];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// The menu is only going to support landscape orientations
return ((interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight));
}
- (NSInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
}
-(BOOL)shouldAutorotate{
return YES;
}
@end
答案 0 :(得分：0)
原因是：
1）忽略了对layoutAnimated的调用
2）似乎ios 6处理视图层次结构的方式有所不同......
3）ios 6.0自动缩放以适应1136x640显示器与早期版本相比，可扩展至适合960x640显示器。
解决方案是：
使用layoutsubviews call和layoutifneeded
还使用条件语句查找ios版本（例如greater_than_or_equal_to ios 6.0）