UIImageView

常用方法

 

// (1)创建
UIImageView
*imageView = [[UIImageView alloc ] init];
UIImage
*image = [UIImage imageNamed:@"image_photo"];
imageView.image
= image;


// (2)设置圆角
imageView.layer.masksToBounds = YES;
imageView.layer.cornerRadius = 10;


// (3)设置边框颜色和大小
imageView.layer.borderColor = [UIColor orangeColor].CGColor;
imageView.layer.borderWidth = 2;


//  (4)contentMode属性：当图片小于imageView的大小处理图片显示


imageView.contentMode = UIViewContentModeScaleAspectFit;
/*
这个属性是用来设置图片的显示方式，如居中、居右，是否缩放等，有以下几个常量可供设定：
UIViewContentModeScaleToFill,
UIViewContentModeScaleAspectFit,
UIViewContentModeScaleAspectFill,
UIViewContentModeRedraw,
UIViewContentModeCenter,
UIViewContentModeTop,
UIViewContentModeBottom,
UIViewContentModeLeft,
UIViewContentModeRight,
UIViewContentModeTopLeft,
UIViewContentModeTopRight,
UIViewContentModeBottomLeft,
UIViewContentModeBottomRight,
*/


// (5)为图片添加单击事件：一定要先将userInteractionEnabled置为YES，这样才能响应单击事件
imageView.userInteractionEnabled = YES;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self
action:@selector(tapImageView:)];
[imageView addGestureRecognizer:singleTap];


// (6)或者显示图片
imageView.hidden = YES;//或者NO;


// (7)设置透明度
imageView.alpha =0.5;


// (8)设置高亮时显示的图片
imageView.highlightedImage = [UIImage imageNamed:@"image_photo"];

// 设置正常显示的图片
imageView.image = [UIImage imageNamed:@"image_photo"];

 

 

帧动画

UIImage *image1 = [UIImage imageNamed:@"homeNaviLeftBtn"];
UIImage *image2 = [UIImage imageNamed:@"homeNaviRightBtn"];
UIImage *image3 = [UIImage imageNamed:@"image_photo"];
NSArray *imagesArray = @[image1,image2,image3];
imageView.animationImages = imagesArray;

//设定所有的图片在多少秒内播放完毕
imageView.animationDuration = [imagesArray count];

// 不重复播放多少遍，0表示无数遍
imageView.animationRepeatCount = 0;

//开始播放
[imageView startAnimating];