IOS控件- scrollview

原創

2020-02-22 12:29

scrollview的delegate與files owner關聯

.h文件

#import <UIKit/UIKit.h>

@interface EXSVViewController : UIViewController<UIScrollViewDelegate>

@end

.m文件

//
//  EXSVViewController.m
//  ExerciseScrollView
//
//  Created by hxl on 13-5-21.
//  Copyright (c) 2013年 xiaolei.hu. All rights reserved.
//

#import "EXSVViewController.h"

@interface EXSVViewController ()
@property (nonatomic) IBOutlet UIScrollView *scrollView;//在xib中與scrollview控件關聯
@end

@implementation EXSVViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    // Scroll view
    UInt16 h = 6;
    UInt16 w = 6;
    for (UInt16 i = 0; i < h; i++) {
        //CGRectMake(X軸座標,Y軸座標,寬,高)
        for (UInt16 j = 0; j < w; j++) {
            //設置圖片位置
            UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(self.scrollView.frame.size.width * i, self.scrollView.frame.size.height * j, self.scrollView.frame.size.width,self.scrollView.frame.size.height)];
            
            // 指定URL生成UIImage
            [button setTitle:@"按鈕" forState:UIControlStateNormal]; //設置button的標題
            //[button addTarget:self action:@selector(buttonPress:) forControlEvents:UIControlEventTouchUpInside]; //定義點擊時的響應函數
            [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",i+1]] forState:UIControlStateNormal];
            [self.scrollView addSubview:button];

        }
    }
    //NSLog(@"%@",self);
    //等同於在.xlb文件中delegate和File's Owner連接
    //[self.scrollView setDelegate:self];
    [self.scrollView setContentSize:CGSizeMake(self.scrollView.frame.size.width * h, self.scrollView.frame.size.height * w)];
    
    //[self.scrollView setDirectionalLockEnabled:YES];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
 typedef enum {
 UIInterfaceOrientationPortrait           = UIDeviceOrientationPortrait,
 UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
 UIInterfaceOrientationLandscapeLeft      = UIDeviceOrientationLandscapeRight,
 UIInterfaceOrientationLandscapeRight     = UIDeviceOrientationLandscapeLeft
 } UIInterfaceOrientation;
 */
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    
    return (interfaceOrientation == UIInterfaceOrientationPortrait);//系統默認不支持旋轉功能
    //返回YES屏幕所有方向旋轉都支持
    //return YES;
}

// 觸摸屏幕來滾動畫面還是其他的方法使得畫面滾動，皆觸發該函數
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    NSLog(@"Scrolling...");
}

// 觸摸屏幕並拖拽畫面，再鬆開，最後停止時，觸發該函數
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
    NSLog(@"scrollViewDidEndDragging  -  End of Scrolling.");
}

// 滾動停止時，觸發該函數
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    NSLog(@"scrollViewDidEndDecelerating  -   End of Scrolling.");
}

// 調用以下函數，來自動滾動到想要的位置，此過程中設置有動畫效果，停止時，觸發該函數
// UIScrollView的setContentOffset:animated:
// UIScrollView的scrollRectToVisible:animated:
// UITableView的scrollToRowAtIndexPath:atScrollPosition:animated:
// UITableView的selectRowAtIndexPath:animated:scrollPosition:
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView {
    NSLog(@"scrollViewDidEndScrollingAnimation  -   End of Scrolling.");
}

@end