I have two uitableviews in a view controller. First table is set on a uiscrollview programatically and the other table on self.view from storyboard. I have set the rowHeight for both the table as 45. But gradually the height of one table keeps increasing as the rows increase like the screenshot I have shown.
Code goes like this :
scrollview = [[UIScrollView alloc] initWithFrame:CGRectMake(130, 45, self.view.frame.size.width-130, self.view.frame.size.height-45)];
scrollview.backgroundColor = [UIColor colorWithRed:0.42 green:0.27 blue:0.60 alpha:1.0];
tableGradeValue = [[UITableView alloc] initWithFrame:CGRectMake(0, 35, self.view.frame.size.width, self.view.frame.size.height-75) style:UITableViewStylePlain];
tableGradeValue.delegate = self;
tableGradeValue.dataSource = self;
self.tableCourse.delegate = self;
self.tableCourse.dataSource = self;
tableGradeValue.rowHeight = 45;
scrollview.bounces = NO;
for(int i = 0; i< [res6Keys count]; i++)
{
CGFloat y = i * 150;
UILabel *lblCell = [[UILabel alloc] initWithFrame:CGRectMake(y, 1, 140, 31)];
lblCell.tag = i+1;
[scrollview addSubview:lblCell];
lblCell.backgroundColor = [UIColor clearColor];
lblCell.textColor = [UIColor colorWithRed:0.93 green:0.92 blue:0.96 alpha:1.0];
lblCell.text = [res6Keys objectAtIndex:i];
}
[scrollview addSubview:tableGradeValue];
scrollview.contentSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height);
[self.view addSubview:scrollview];
And the other tableview is set from storyboard normally and the rowHeight is 45.
I don't know wether this was the problem. But strangely I got the answer. I dint give #property and #synthesis to the table which was over the scrollview. I now gave property and synthesis and it got working.
Related
I have tried to add UISchollView in custom keyboard view but it shows view but not scrolling.
here is my code. i have also tried self.view but its not working either.
UIScrollView *scrollview1 = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];
NSInteger viewcount= 8;
for (int i = 0; i <viewcount; i++)
{
CGFloat y = i * 50;
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, y,50, 50)];
view.backgroundColor = (i%2==0)?[UIColor greenColor]:[UIColor blueColor];
[scrollview1 addSubview:view];
}
scrollview1.contentSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height *viewcount);
scrollview1.backgroundColor = [UIColor redColor];
scrollview1.pagingEnabled=YES;
[self.inputView addSubview:scrollview1];
UIScrollView will scroll if its contentSize is greater then its frame size. So try setting its contentSize property and also check if userInteraction is enabled or not.
Hope it will work.
I am facing a really strange issue:
I am instantiating multiple UIImageView inside a for loop with the method CGRectMake, the y origin I am giving seems to be totally wrong on the screen:
Here is my code:
- (void)makeTheView
{
self.view.backgroundColor = [UIColor whiteColor];
UIScrollView *header = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 64, self.view.frame.size.width, 100)];
header.backgroundColor = [UIColor colorWithRed:254/255.0f green:255/255.0f blue:213/255.0f alpha:1.0f];
[self.view addSubview:header];
for (int i = 0; i < 10; i++) {
UIImageView *avatar = [[UIImageView alloc] initWithFrame:CGRectMake(5 + i * 75, 5, 70, 70)];
avatar.image = [UIImage imageNamed:#"bo_pic_baby5.jpg"];
[avatar.layer setCornerRadius:8.0];
avatar.layer.masksToBounds = YES;
NSLog(#"%f", avatar.frame.origin.y);
UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(0, 50, avatar.frame.size.width, 20)];
title.backgroundColor = [UIColor colorWithRed:148/255.0f green:148/255.0f blue:148/255.0f alpha:0.5f];
title.font = [UIFont fontWithName:#"Arial" size:15];
title.text = #"崔健";
title.textAlignment = NSTextAlignmentCenter;
title.textColor = [UIColor whiteColor];
[avatar addSubview:title];
[header addSubview:avatar];
}
}
According to this code avatar is within header at 5px from the top of header.
But the following is what I obtain visually:
note: when the white area begin, the header view stopped
This is not a real issue since I can reevaluate my frames like this :
CGRectMake(5 + i * 75, - 20, 70, 70)
but it looks really weird, and I am quite sure I am missing something totally trivial here...
I think this will be fixed by:
self.automaticallyAdjustsScrollViewInsets = NO;
Since iOS 7, view controllers automatically adjust scroll view insets so that the scroll view content is not hidden behind the navigation bar because it expects scroll views to start at the top of the screen.
However, the usual solution is to just set the scrollview frame.origin.y to 0.
Your Code is Absolutely Correct , As you are Adding the scrollview on (0,64) Position , So 64 will be count from Bottom of the Navigation Bar, If you want it on top (Just Below the Navigation bar), Change this declaration to as below :
UIScrollView *header = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 100)];
I have a UIScrollView like so:
self.view.backgroundColor = [UIColor redColor];
UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 100)];
scroll.pagingEnabled = YES;
NSInteger numberOfViews = 3;
for (int i = 0; i < numberOfViews; i++) {
CGFloat xOrigin = i * self.view.frame.size.width;
UIView *awesomeView = [[UIView alloc] initWithFrame:CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height)];
awesomeView.backgroundColor = [UIColor colorWithRed:0.5/i green:0.5 blue:0.5 alpha:1];
[scroll addSubview:awesomeView];
}
[scroll setShowsHorizontalScrollIndicator:NO];
scroll.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews, self.view.frame.size.height);
[self.view addSubview:scroll];
This is the right gestures I want and is fine for a finite set of custom subviews, but how do I make the scollview go infinite?
I want the subviews to be dates and swiping left and right will bring the next or previous date.
Either use UIScrollViewDelegate method -(void)scrollViewDidScroll:(UIScrollView*)scrollView and adjust your view positions and the scrollviews content offset there, or have a look at Apple's example on how to create a infinite horizontal ScrollView by subclassing the UIScrollView: https://developer.apple.com/library/ios/samplecode/StreetScroller/
I happened to find that setContentOffset to a UIScrollView will cause the scrollView append a new view to its subviews. here is the code:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake((320 - 261) / 2, 50, 261, 67)];
scrollView.pagingEnabled = YES;
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.bounces = NO;
scrollView.backgroundColor = [UIColor darkGrayColor];
for (int i = 0; i < 5; i ++) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(i * 87, 1, 87, 65)];
view.tag = i;
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 50, 30)];
label.backgroundColor = [UIColor clearColor];
label.textColor = [UIColor whiteColor];
label.text = [NSString stringWithFormat:#"%d", i];
[view addSubview:label];
view.backgroundColor = [UIColor greenColor];
[scrollView addSubview:view];
}
scrollView.contentSize = CGSizeMake(87 * 5, 67);
NSLog(#"before scroll: count of subview is %d", scrollView.subviews.count);
CGPoint offset = CGPointMake(87, 0);
[scrollView setContentOffset:offset animated:YES];
NSLog(#"after scroll: count of subview is %d", scrollView.subviews.count);
[self.view addSubview:scrollView];
}
Before calling setContentOffset:offset, the number of subviews of the scrollView is 5. This is what I expect. After that, the number turns to be 6.
Is it working as designed? How to avoid the new subview appended?
The extra subview is the scroll indicator. If you check again in a later method, it will have gone away. Don't worry.
You can confirm this by hiding the scroll indicators (showsVerticalScrollIndicator and showsHorizontalScrollIndicator properties).
Don't try to assume things about the view hierarchy of UIKit classes. UIKit can, and does, add its own views to several things - see tableviews and their cells, a navigation controller's view and so on.
How to insert four tableview in a scrollview by pagination.i know how to do this ,but i need a image view as first page and then tableview as second,third and forth page.
Thankz in advance
_scroll=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 55, 1000, 460)];
_scroll.backgroundColor=[UIColor clearColor];
_scroll.pagingEnabled=YES;
_scroll.contentSize = CGSizeMake(1000*5, 460);
[_scroll setBackgroundColor:[UIColor lightGrayColor]];
CGFloat x=0;
for(int i=1;i<6;i++)
{
UITableView *table = [[UITableView alloc]initWithFrame:CGRectMake(x+10, 10, 750, 440) style:UITableViewStylePlain];
[table setBackgroundColor:[UIColor whiteColor]];
table.rowHeight = 120;
table.separatorColor = [UIColor grayColor];
table.delegate=self;
//table.dataSource=self;
[_scroll addSubview:table];
[table release];
x+=1000;
}
[self.view addSubview:_scroll];
_scroll.showsHorizontalScrollIndicator=NO;
[_scroll release];
Ignoring the recommendation that UITableViews are not embedded inside scroll views as they are scrollviews in themself. So dont do this (not a joke).
You add the imageview with addSubview: just like the tableviews you want add. They are all UIViews and are all treated the same way.
So for a hypothetical scrollview with size (100,100) and imageview/tableviews of size (100,100)
imageview.frame = CGRectMake(0,0,100,100);
[scrollview addSubview:imageview];
tableview1.frame = CGRectMake(100,0,100,100);
[scrollview addSubview:tableview1];
tableview2.frame = CGRectMake(200,0,100,100);
[scrollview addSubview:tableview2];
tableview3.frame = CGRectMake(300,0,100,100);
[scrollview addSubview:tableview3];
scrollview.contentSize = CGSizeMake(400,100);
scrollview.pagingEnabled = YES;