Xib中使用UIScrollView的AutolayoutDemo

Xib中使用UIScrollView的AutolayoutDemo。主要思路：給scrollView添加一个contentView，设置contentView的top ,left,right,bottom的约束与scrollView为0，再设置contentView水平居中，然后设置contentView的高度约束值，这样scrollView的ContentSize就确定了，contentView的高度约束值大于scrollView的高度就可以垂直滚动了。

//
//  AppDelegate.m
//  testAView
//
//  Created by 蒋宝 on 2019/3/30.
//  Copyright © 2019 jiang. All rights reserved.
//

#import “AppDelegate.h“
#import “ViewController.h“

@interface AppDelegate （）

@end

@implementation AppDelegate


- （BOOL）application:（UIApplication *）application didFinishLaunchingWithOptions:（NSDictionary *）launchOptions {
    // Override point for customization after application launch.
    self.window.rootViewController = [[UINavigationController alloc]initWithRootViewController:[[ViewController alloc]init]];
    [self.window makeKeyAndVisible];
    
    return YES;
}


- （void）applicationWillResignActive:（UIApplication *）application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary int

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-03-30 09:54  testAView\
     目录           0  2019-03-30 10:17  testAView\testAView.xcodeproj\
     文件       14015  2019-03-30 10:17  testAView\testAView.xcodeproj\project.pbxproj
     目录           0  2019-03-30 09:54  testAView\testAView.xcodeproj\xcuserdata\
     目录           0  2019-03-30 09:54  testAView\testAView.xcodeproj\xcuserdata\jiangbao.xcuserdatad\
     目录           0  2019-03-30 09:54  testAView\testAView.xcodeproj\xcuserdata\jiangbao.xcuserdatad\xcschemes\
     文件         344  2019-03-30 09:54  testAView\testAView.xcodeproj\xcuserdata\jiangbao.xcuserdatad\xcschemes\xcschememanagement.plist
     目录           0  2019-03-30 09:54  testAView\testAView.xcodeproj\project.xcworkspace\
     文件         154  2019-03-30 09:54  testAView\testAView.xcodeproj\project.xcworkspace\contents.xcworkspacedata
     目录           0  2019-03-30 09:54  testAView\testAView.xcodeproj\project.xcworkspace\xcuserdata\
     目录           0  2019-03-30 12:05  testAView\testAView.xcodeproj\project.xcworkspace\xcuserdata\jiangbao.xcuserdatad\
     文件       27999  2019-03-30 12:05  testAView\testAView.xcodeproj\project.xcworkspace\xcuserdata\jiangbao.xcuserdatad\UserInterfaceState.xcuserstate
     目录           0  2019-03-30 09:54  testAView\testAView.xcodeproj\project.xcworkspace\xcshareddata\
     文件         238  2019-03-30 09:54  testAView\testAView.xcodeproj\project.xcworkspace\xcshareddata\IDEWorkspaceChecks.plist
     目录           0  2019-03-30 12:05  __MACOSX\
     目录           0  2019-03-30 12:05  __MACOSX\testAView\
     目录           0  2019-03-30 12:05  __MACOSX\testAView\testAView.xcodeproj\
     文件         176  2019-03-30 09:54  __MACOSX\testAView\testAView.xcodeproj\._project.xcworkspace
     文件         176  2019-03-30 10:17  __MACOSX\testAView\._testAView.xcodeproj
     目录           0  2019-03-30 10:50  testAView\testAView\
     文件         347  2019-03-30 10:07  testAView\testAView\TestViewController.m
     目录           0  2019-03-30 12:05  __MACOSX\testAView\testAView\
     文件         176  2019-03-30 10:07  __MACOSX\testAView\testAView\._TestViewController.m
     文件         271  2019-03-30 09:54  testAView\testAView\AppDelegate.h
     文件         227  2019-03-30 09:54  __MACOSX\testAView\testAView\._AppDelegate.h
     目录           0  2019-03-30 09:54  testAView\testAView\Assets.xcassets\
     目录           0  2019-03-30 09:54  testAView\testAView\Assets.xcassets\AppIcon.appiconset\
     文件        1590  2019-03-30 09:54  testAView\testAView\Assets.xcassets\AppIcon.appiconset\Contents.json
     文件          62  2019-03-30 09:54  testAView\testAView\Assets.xcassets\Contents.json
     目录           0  2019-03-30 12:05  __MACOSX\testAView\testAView\Assets.xcassets\
     文件         171  2019-03-30 09:54  __MACOSX\testAView\testAView\Assets.xcassets\._Contents.json
............此处省略19个文件信息