点击任何处，弹出另外一个界面（出行搭档）

#import <UIKit/UIKit.h>

@interface MoreView : UIView

@end

#import "MoreView.h"

@implementation MoreView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        
        //设计背景色为红色
        self.backgroundColor=[UIColor redColor];
    }
    return self;
}

#import <UIKit/UIKit.h>
//头文件
#import "MoreView.h"

@interface RootViewController : UIViewController
{
    //是否点击
    BOOL isSwitch;
    //红色UIView界面
    MoreView *moreView;
}
@end

//点击任何处，显示出红色的UIView
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    if (isSwitch) {
        [moreView removeFromSuperview];
        isSwitch=NO;
    }else{
        moreView=[[MoreView alloc]initWithFrame:CGRectMake(10, 100, 200, 50)];
        [self.view addSubview:moreView];
        isSwitch=YES;
    }
   
}