使用OC通过数组来存放图片并加按钮使之能够切换照片

来源：互联网发布：打电话不要钱的软件编辑：程序博客网时间：2024/05/01 01:58

 @interface ViewController ()

// 左边按钮

  @property(nonatomic,strong)UIButton *leftBtn;

// 右边按钮

 @property(nonatomic,strong)UIButton *rightBtn;

// 相框属性和将图片存入数组

    @property(nonatomic,strong)UIImageView *myImageView;    @property(nonatomic,strong)NSArray *imageNames;    @end    @implementation ViewController    - (void)viewDidLoad {    [super viewDidLoad];    self.imageNames = @[@"图片名",@"图片名",@"图片名"];

// 设置相框位置及属性

self.myImageView = [[UIImageView alloc]initWithFrame:CGRectMake(110, 100, 200, 200)];

// 导入图片其中png格式的只需加上名字其余的均要加上后缀

 UIImage *image = [UIImage imageNamed:@"图片名"];

// 将图片导入到相框当中

    self.myImageView.image = image;    [self.view addSubview:self.myImageView];

//通过右边按钮实现图片交换

 -(void)rightBtnAction    //    切换到下一张图片    //    获取是第几张图片    {NSInteger index = [self.imageNames indexOfObject:self.titleLabel.text];    //    不是最后一张便可以切换  if (index < 4)    {       if (index == 3)     {        //            改变右边按钮颜色和关闭用户交互     self.rightBtn.userInteractionEnabled = NO;     UIImage *image = [UIImage imageNamed:@"right_disable"];     [self.rightBtn setBackgroundImage: image forState:(UIControlStateNormal)];      }        else        {            //   左边按钮和颜色都处于正常状态        self.leftBtn.userInteractionEnabled = YES;        self.rightBtn.userInteractionEnabled = YES;        UIImage *leftNormal = [UIImage imageNamed:@"left_normal"];        UIImage *rightNormal = [UIImage imageNamed:@"right_normal"];        [self.leftBtn setBackgroundImage:leftNormal forState:(UIControlStateNormal)];        [self.rightBtn setBackgroundImage:rightNormal forState:(UIControlStateNormal)];         }   //        若不是最后一张那么切换下一张图片 通过定义的数组实现        NSString *nextTitle = self.imageNames[index+1];    //        下一张图片标题即为图片名称        self.titleLabel.text = nextTitle;    //        下一张图片即为数组中的下个元素名字        self.myImageView.image = [UIImage imageNamed:nextTitle];}     }

// 通过左边按钮实现图片交换

  -(void)leftBtnAction    {            //    切换到上一张图片            //    获取是第几张图片    NSInteger index = [self.imageNames indexOfObject:self.titleLabel.text];            //    不是第一张便可以切换     if (index > 0) {       if (index == 1)        {     //          左边交互关闭         self.leftBtn.userInteractionEnabled = NO;         UIImage *image = [UIImage imageNamed:@"left_disable"];         [self.leftBtn setBackgroundImage: image forState:(UIControlStateNormal)];       else   {    //    左右两边按钮都是正常状态 self.leftBtn.userInteractionEnabled = YES; self.rightBtn.userInteractionEnabled = YES; UIImage *leftNormal = [UIImage imageNamed:@"left_normal"]; UIImage *rightNormal = [UIImage imageNamed:@"right_normal"];                [self.leftBtn setBackgroundImage:leftNormal forState:(UIControlStateNormal)];                [self.rightBtn setBackgroundImage:rightNormal forState:(UIControlStateNormal)];   }    //        若不是第一张那么切换为上一张图片 通过定义的数组实现  NSString *lastTitle = self.imageNames[index-1];    //        上一张图片标题即为图片名称  self.titleLabel.text = lastTitle;    //        上一张图片即为数组中的下个元素名字  self.myImageView.image = [UIImage imageNamed:lastTitle];        }    }

 //  按钮监听

-(void)btnClickLister  {        NSLog(@"click btn");  }  //防止内存溢出     -(void)didReceiveMemoryWarning    {       [super didEeceiveMemoryWarning];    }    @end

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