How to create a UIScrollView Programmatically?

Question

Alright, so the key here is I\'m not using IB at all, because the View I\'m working with is created programmatically. The UIView covers the lower half the scre

Answer 1

Create a UiScrollView Programitically

ScrView = [[UIScrollView alloc]initWithFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height)];
ScrView.showsVerticalScrollIndicator=YES;
[ScrView setBackgroundColor:[UIColor yellowColor]];
[ScrView setScrollEnabled:YES];
[ScrView setContentSize:CGSizeMake(0, 700)];
[ScrView setShowsHorizontalScrollIndicator:YES];
[ScrView setShowsVerticalScrollIndicator:YES];
[self.view addSubview:ScrView];

Answer 2

Calculate distance between 2 point on maps for iOS [closed]

import UIKit import CoreLocation

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    var myLocation = CLLocation(latitude: 23.1929, longitude: 72.6156)
    var myBuddysLocation = CLLocation(latitude: 23.0504, longitude: 72.4991)
    var distance = myLocation.distance(from: myBuddysLocation) / 1000
    print(String(format: "The distance to my buddy is %.01fkm", distance))
}

}

Answer 3

try this,

{

        scrollview=[[UIScrollView alloc]initWithFrame:CGRectMake(0,0,320,480)]; 
        scrollview.showsVerticalScrollIndicator=YES;
        scrollview.scrollEnabled=YES;
        scrollview.userInteractionEnabled=YES;
        [self.view addSubview:scrollview];
        scrollview.contentSize = CGSizeMake(width,height);

    [scrollview release];
}

Answer 4

Simple Method: You can create multiple times if you need more

- (void)viewDidLoad
{
    [super viewDidLoad];

    int x = 0;
    int y = 10;
    for(int i=0; i<5; i++)
    {
        UIScrollView *scrollview=[[UIScrollView alloc]initWithFrame:CGRectMake(x, y, 50, 50)];
        scrollview.showsVerticalScrollIndicator=YES;
        scrollview.scrollEnabled=YES;
        scrollview.userInteractionEnabled=YES;
        scrollview.backgroundColor = [UIColor greenColor];
        [self.view addSubview:scrollview];
        //scrollview.contentSize = CGSizeMake(50,50);
        x=x+55;

        //[self myscrollView];
    }
}

Answer 5

This may be helpful to you for creating the uiscrollview programmatically
http://unconditionalloop.blogspot.com/2011/04/uiscrollview-programmatically.html

  UIScrollView *scrollview = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];   
     NSInteger viewcount= 4;  
     for(int i = 0; i< viewcount; i++) { 

        CGFloat y = i * self.view.frame.size.height;  
        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, y,self.view.frame.size.width, self .view.frame.size.height)];       
        view.backgroundColor = [UIColor greenColor];  
        [scrollview addSubview:view];  
        [view release];  
     }    
  scrollview.contentSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height *viewcount);   
  [self.view addSubview:scrollview];

Answer 6

I use lazy a lot when creating UI programmatically, like this:

class WorldViewController: UIViewController {
    override func loadView() {
        super.loadView()
        view = scrollView
        scrollView.addSubview(label0)
    }

    lazy var scrollView: UIScrollView = {
        let instance = UIScrollView()
        instance.backgroundColor = UIColor.blackColor()
        return instance
    }()

    lazy var label0: UILabel = {
        let instance = UILabel()
        instance.text = "Ice caps are melting"
        instance.textColor = UIColor.whiteColor()
        instance.sizeToFit()
        return instance
    }()

    var needLayoutContent = true

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        if needLayoutContent {
            let bounds = scrollView.bounds
            let contentSize = CGSizeMake(bounds.width * 1.5, bounds.height * 1.5)
            label0.center = CGPointMake(contentSize.width / 2, contentSize.height / 2)
            scrollView.contentSize = contentSize
            scrollView.contentOffset = CGPointMake(bounds.width * 0.25, bounds.height * 0.25)
            needLayoutContent = false
        }
    }
}