iOS自定义控件（UISegmentedControl+UIScrollView制作QQ音乐主页面） iOS自定义控件：UISegmentedContr

【iOS自定义控件（UISegmentedControl+UIScrollView制作QQ音乐主页面）】

利用原生的UISegmentedControl和UIScrollView组合绘制这样的页面。可能不是很好的做法。代码如下

#import "ViewController.h" // 示例Controller #import "TestViewController.h" #import "TestTableViewController.h"#define SEG_SCREEN_WIDTH UIScreen.mainScreen.bounds.size.width@interface ViewController ()@property (nonatomic, strong) UISegmentedControl *segmentedControl; @property (nonatomic, strong) NSArray *titleArray; @property (nonatomic, strong) NSMutableArray *vcArray; @property (nonatomic, strong) UIScrollView *scrollView; @end@implementation ViewController#pragma mark =============== Getter && Setter =============== - (UISegmentedControl *)segmentedControl { if (!_segmentedControl) { _segmentedControl = [[UISegmentedControl alloc] initWithItems:self.titleArray]; // 默认选择第一个 _segmentedControl.selectedSegmentIndex = 0; // 隐藏自带的边框 _segmentedControl.tintColor = UIColor.clearColor; NSDictionary *selectedDic = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor redColor], NSForegroundColorAttributeName,[UIFont systemFontOfSize:20],NSFontAttributeName,nil]; [_segmentedControl setTitleTextAttributes:selectedDic forState:UIControlStateSelected]; NSDictionary *normalDic = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor blackColor],NSForegroundColorAttributeName,[UIFont systemFontOfSize:15],NSFontAttributeName,nil]; [_segmentedControl setTitleTextAttributes:normalDic forState:UIControlStateNormal]; // 添加点击事件 [_segmentedControl addTarget:self action:@selector(segmentedControlChange:) forControlEvents:UIControlEventValueChanged]; } return _segmentedControl; }- (UIScrollView *)scrollView { if (!_scrollView) { _scrollView = [[UIScrollView alloc] init]; _scrollView.delegate = self; _scrollView.frame = self.view.frame; _scrollView.pagingEnabled = true; _scrollView.showsHorizontalScrollIndicator = false; _scrollView.contentSize = CGSizeMake(SEG_SCREEN_WIDTH * self.titleArray.count, 0); // 默认加载第一个VC视图 UIViewController *vc = self.vcArray[0]; [self.scrollView addSubview:vc.view]; } return _scrollView; }#pragma mark =============== LifeCycle =============== - (void)viewDidLoad { [super viewDidLoad]; [self initData]; if ([self respondsToSelector:@selector(edgesForExtendedLayout)]){ self.edgesForExtendedLayout = UIRectEdgeNone; }[self.navigationItem setTitleView:self.segmentedControl]; [self.view addSubview:self.scrollView]; }#pragma mark =============== 加载默认数据 =============== - (void)initData { self.titleArray = @[@"我的",@"音乐馆",@"发现"]; NSArray *vArray = @[@"TestViewController",@"TestTableViewController",@"TestViewController"]; self.vcArray = [NSMutableArray array]; for (int i = 0; i < vArray.count; i++) { Class class = NSClassFromString(vArray[I]); UIViewController *vc = [[class alloc] init]; vc.view.frame = CGRectMake(SEG_SCREEN_WIDTH * i, 0, SEG_SCREEN_WIDTH, self.view.frame.size.height); [self.vcArray addObject:vc]; } }#pragma mark =============== UISegmentedControl点击事件 =============== - (void)segmentedControlChange:(UISegmentedControl *)sgementControl { UIViewController *vc = self.vcArray[sgementControl.selectedSegmentIndex]; [self.scrollView addSubview:vc.view]; self.scrollView.contentOffset = CGPointMake(SEG_SCREEN_WIDTH * sgementControl.selectedSegmentIndex, 0); }#pragma mark =============== UIScrollViewDelegate =============== - (void)scrollViewDidScroll:(UIScrollView *)scrollView { CGFloat contentOffsetX = scrollView.contentOffset.x; NSInteger index = contentOffsetX/SEG_SCREEN_WIDTH; UIViewController *vc = self.vcArray[index]; [self.scrollView addSubview:vc.view]; self.segmentedControl.selectedSegmentIndex = index; }- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; }@end 复制代码

效果图

Demo地址 https://github.com/wudan-ios/UISegmentedControl-UIScrollView.git