右边Menu菜单

• 使用系统自带的方法实现,非第三方库,前提iOS8以后才能使用

• 实现步骤:

• 1.创建导航条的右边按钮

- (void)viewDidLoad {
    [super viewDidLoad];
 // 右边
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(rightBarAction)];
}

#pragma mark -- 菜单
// 菜单  点击按钮调用的方法
- (void)rightBarAction {
    
    self.itemPopVC = [[WMPopoverController alloc] init];
    self.itemPopVC.modalPresentationStyle = UIModalPresentationPopover;
    self.itemPopVC.popoverPresentationController.barButtonItem = self.navigationItem.rightBarButtonItem;
    //箭头方向
    self.itemPopVC.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
    //代理
    self.itemPopVC.popoverPresentationController.delegate = self;
    [self presentViewController:self.itemPopVC animated:YES completion:nil];
}
- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller {
    NSLog(@"%@",controller);
    return  UIModalPresentationNone;
}

• 2.创建类==就是菜单视图
• .h文件

#import <UIKit/UIKit.h>

@interface WMPopoverController : UITableViewController

@end

• .m文件

#import "WMPopoverController.h"

@interface WMPopoverController ()

@property (nonatomic, strong) NSMutableArray *addArray;

@end

@implementation WMPopoverController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.tableView.scrollEnabled = NO;
    self.addArray = [[NSMutableArray alloc] initWithObjects:@"扫一扫",@"搜一搜", @"创建讨论组",@"发送到电脑", @"面对面快传",@"收钱", nil];
    
    
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return self.addArray.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    static NSString *identifer = @"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifer];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifer];
    }
    cell.textLabel.text = [NSString stringWithFormat:@"%@", self.addArray[indexPath.row]];
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    
    NSInteger number = indexPath.row;
    switch (number) {
        case 0:
            NSLog(@"扫一扫");
            break;
            
        case 1:
            NSLog(@"搜一搜");
            break;
            
        default:
            break;
    }
    
}

//重写preferredContentSize，返回popover的大小
- (CGSize)preferredContentSize {
    if (self.presentingViewController && self.tableView != nil) {
        CGSize tempSize = self.presentingViewController.view.bounds.size;
        tempSize.width = 150;
        CGSize size = [self.tableView sizeThatFits:tempSize];  //sizeThatFits返回的是最合适的尺寸，但不会改变控件的大小
        return size;
    }else {
        return [super preferredContentSize];
    }
}



@end

效果图

• 学习链接简书:维尼的小熊