objective-c UIImageView

//
// ViewController.m
// UIImageView
//
// Created by 非凡 程序员 on 15/11/12.
// Copyright (c) 2015年 非凡 程序员. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
_i=20;
//图片实例化方法一：
UIImageView * imageView = [ [ UIImageView alloc ] init ] ;

//图片实例化方法二：
UIImageView * imageViewI = [ [ UIImageView alloc ] initWithFrame: CGRectMake ( 10, 10, 200, 200 ) ] ;

//设置ImageView的内容
imageViewI.image = [ UIImage imageNamed:@"0" ] ;

//图片实例化方法三：
UIImageView * imageViewII = [ [ UIImageView alloc ] initWithImage : [ UIImage imageNamed : @"4" ] ] ;

//设置imageView的大小
imageViewII.frame = CGRectMake ( 180, 100, 100, 100 ) ;

//图片实例化方法四：(图片两个状态)
_imageViewIII = [ [ UIImageView alloc ] initWithImage : [ UIImage imageNamed:@"1" ] highlightedImage : [ UIImage imageNamed:@"2" ] ] ;
_imageViewIII.frame = CGRectMake ( 5,5, 100, 100 ) ;

//将图片添加到页面上
[ self.view addSubview:_imageViewIII ] ;

//添加按钮控制图片状态
UIButton * button = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 80, 80, 180, 30 ) ] ;
[ button setTitle : @"高亮切换" forState : UIControlStateNormal ] ;
button.backgroundColor = [ UIColor redColor ] ;
[ button addTarget : self action : @selector(gaoLiang) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];

// ========= 关于图片的手势 ========

_imageViewIIII = [ [ UIImageView alloc ] initWithImage : [ UIImage imageNamed:@"4" ] ];

_imageViewIIII.frame = CGRectMake(10, 150, 100, 100);

_imageViewIIII.backgroundColor=[UIColor redColor];//可以给图片添加背景颜色明确image和imageView的差别

//将图片添加到页面上
[self.view addSubview:_imageViewIIII];

//图片支持交互
_imageViewIIII.userInteractionEnabled = YES;

// 定义手势
UITapGestureRecognizer *gestur = [ [ UITapGestureRecognizer alloc ]initWithTarget:self action:@selector(shouShi) ];

// 将图片添加手势
[_imageViewIIII addGestureRecognizer:gestur];

// =========== 图片旋转 ============
_rotationImageView = [[ UIImageView alloc]initWithImage:[ UIImage imageNamed:@"0" ] ] ;
_rotationImageView.frame=CGRectMake(200, 200, 100, 100);
[self.view addSubview:_rotationImageView];

//添加按钮控制图片状态
UIButton * buttonI = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 200, 150, 80, 30 ) ] ;
[ buttonI setTitle : @"图片旋转" forState : UIControlStateNormal ] ;
buttonI.backgroundColor = [ UIColor redColor ] ;
[ buttonI addTarget : self action : @selector(xuanZhuan) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonI];

// =========== 图片放缩 ============
_changeSizeImageView = [[ UIImageView alloc]initWithImage:[ UIImage imageNamed:@"2" ] ] ;
_changeSizeImageView.frame=CGRectMake(20, 300, 100, 100);
[self.view addSubview:_changeSizeImageView];

//添加按钮控制图片放大
UIButton * buttonBig = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 110, 320, 80, 30 ) ] ;
[ buttonBig setTitle : @"图片放大" forState : UIControlStateNormal ] ;
buttonBig.backgroundColor = [ UIColor redColor ] ;
[ buttonBig addTarget : self action : @selector(fangDa) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonBig];
//添加按钮控制图片缩小
UIButton * buttonSmall = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 110, 360, 80, 30 ) ] ;
[ buttonSmall setTitle : @"图片缩小" forState : UIControlStateNormal ] ;
buttonSmall.backgroundColor = [ UIColor redColor ] ;
[ buttonSmall addTarget : self action : @selector(suoXiao) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonSmall];

//====== 利用Frame控制缩放 ======
_changeFrameImageView = [[ UIImageView alloc]initWithImage:[ UIImage imageNamed:@"5" ] ] ;
_changeFrameImageView.frame=CGRectMake(120, 430, 100, 100);
[self.view addSubview:_changeFrameImageView];

//添加按钮控制图片放大
UIButton * frameBig = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 110, 600, 50, 30 ) ] ;
[ frameBig setTitle : @"放大" forState : UIControlStateNormal ] ;
frameBig.backgroundColor = [ UIColor redColor ] ;
[ frameBig addTarget : self action : @selector(zengDa) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:frameBig];

//添加按钮控制图片缩小
UIButton * frameSmall = [ [ UIButton alloc ] initWithFrame : CGRectMake ( 220, 600,50, 30 ) ] ;
[ frameSmall setTitle : @"缩小" forState : UIControlStateNormal ] ;
frameSmall.backgroundColor = [ UIColor redColor ] ;
[ frameSmall addTarget : self action : @selector(bianXiao) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:frameSmall];

// _imageViewIII.center=CGPointZero;//设置图片中心位置，CGPointZero是原点（0，0）

// [self.view bringSubviewToFront:imageViewI];//将控件移至最前方

// _imageViewIIII.contentMode=UIViewContentModeCenter;

// _imageViewIII.transform=CGAffineTransformMakeTranslation(100, 200);

}
//添加按钮控制图片放大回调方法
-(void)fangDa{
_changeSizeImageView.transform=CGAffineTransformMakeScale(2, 5);
}
//添加按钮控制图片缩小回调方法
-(void)suoXiao{
_changeSizeImageView.transform=CGAffineTransformMakeScale(0.2, 0.5);

}
//图片放大回调方法
-(void)zengDa{
CGRect bonus = _changeFrameImageView.bounds;//图片中心为中点
bonus.size.width += 30;
bonus.size.height += 30;
_changeFrameImageView.bounds = bonus;
}
//图片缩小回调方法
-(void)bianXiao{
CGRect frame = _changeFrameImageView.frame;//图片左上角为中心
frame.size.height -= 30;
frame.size.width -= 30;
_changeFrameImageView.frame = frame;
}

//为切换高亮添加的方法
-(void)gaoLiang{
if (_imageViewIII.highlighted==YES) {
_imageViewIII.highlighted=NO;
}else{
_imageViewIII.highlighted=YES;
}
}
-(void)shouShi{
NSLog(@"图片手势方法。。。");
}
//点击图片旋转按钮调用的自定义方法，其中设置图片旋转多少
-(void)xuanZhuan{
_i+=20;
_rotationImageView.transform=CGAffineTransformMakeRotation(M_PI*_i/180);
// 这样的旋转是以图片中心为旋转中心的，旋转角度为：M_PI*？/180中？位置
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end