我有 UIScrollView 它有下一个按钮单击它运行此代码
-(IBAction)ScrollPage:(id)sender {
NSLog(@"ScrollPage Called");
NSInteger positionX;
if ([sender tag] == 1) {
positionX = AddNewScroll.contentOffset.x - 320;
}else {
positionX = AddNewScroll.contentOffset.x + 320;
}
[AddNewScroll setContentOffset:CGPointMake(positionX,0) animated:YES];
}
它会将滚动移动到新页面，然后我有按钮点击它会调用
-(IBAction)SelectImg:(id)sender {
UIActionSheet *imgMenu = [[UIActionSheet alloc] initWithTitle:@"choose image"
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:@"Camera"
otherButtonTitles:@"Album",nil];
imgMenu.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
[imgMenu showInView:[UIApplication sharedApplication].keyWindow];
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
imgPicker = [[UIImagePickerController alloc] init];
imgPicker.allowsEditing = YES;
imgPicker.delegate = self;
@try {
if (buttonIndex == 0) {
imgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:imgPicker animated:YES];
}
if (buttonIndex == 1) {
imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//Start iPhone PhotoLibrary
if ([[UIDevice currentDevice]userInterfaceIdiom] == UIUserInterfaceIdiomPhone){
[self presentModalViewController:imgPicker animated:YES];
} else
//Start iPad PhotoLibrary
if ([[UIDevice currentDevice]userInterfaceIdiom] == UIUserInterfaceIdiomPad){
aPopover = [[UIPopoverController alloc] initWithContentViewController:imgPicker];
[aPopover presentPopoverFromRect:CGRectMake(250, 40, 300, 300) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
}
}
问题是当它调用 actionSheet 时 UIScrollView 本身转到第一页 contentOffset 为 0 然后调用 scrollViewDidScroll
附言。分页禁用