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[操作系统]【代码笔记】给背景图加上移动的手势


一,工程图。

二,效果图。

三,代码。

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController<UIGestureRecognizerDelegate>@end

 

RootViewController.m

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#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];  if (self) {    // Custom initialization  }  return self;}- (void)viewDidLoad{  [super viewDidLoad];  // Do any additional setup after loading the view.    //增加背景图  [self addView];  }#pragma -mark -functions//背景图-(void)addView{  //红色的背景图  UIView *parentView=[[UIView alloc]initWithFrame:CGRectMake(50, 100, 200, 200)];  parentView.backgroundColor=[UIColor redColor];  [self.view addSubview:parentView];    [parentView setUserInteractionEnabled:YES];      //移动的手势  UIPanGestureRecognizer *panRcognize=[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];  panRcognize.delegate=self;  [panRcognize setEnabled:YES];  [panRcognize delaysTouchesEnded];  [panRcognize cancelsTouchesInView];    [parentView addGestureRecognizer:panRcognize];}#pragma UIGestureRecognizer Handles- (void)handlePan:(UIPanGestureRecognizer *)recognizer {    NSLog(@"--移动的手势-----");  }- (void)didReceiveMemoryWarning{  [super didReceiveMemoryWarning];  // Dispose of any resources that can be recreated.}
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