IOS 之UI按鈕的縮放的旋轉和平移

//
//  ViewController.m
//  02-transform屬性的介紹
//
//  Created by 魯軍 on 2021/1/30.
//

#import "ViewController.h"

@interface ViewController ()
- (IBAction)move;
- (IBAction)rotate;
- (IBAction)scale;
@property (weak, nonatomic) IBOutlet UIButton *btnIcon;
- (IBAction)clear;

@property (weak,
 
 nonatomic) IBOutlet UITextField *txt1;

- (IBAction)test;



@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}


- (IBAction)scale {
    // self.btnIcon.transform = CGAffineTransformMakeScale(0.5,0.5);
     self.btnIcon.
 
transform = CGAffineTransformScale(self.btnIcon.transform, 1.5, 1.5);
}

- (IBAction)rotate {
    
  //  self.btnIcon.transform = CGAffineTransformMakeRotation(-M_PI_4);
   // self.btnIcon.transform = CGAffineTransformRotate(self.btnIcon.transform, -M_PI_4);
    
    
    [UIView animateWithDuration:2.5
 
 animations:^{
        self.btnIcon.transform = CGAffineTransformRotate(self.btnIcon.transform, -M_PI_4);
        self.btnIcon.transform =  CGAffineTransformTranslate(self.btnIcon.transform, 0, 50);
          
        self.btnIcon.transform = CGAffineTransformScale(self.btnIcon.transform, 1.5, 1.5);
    }];
    
}

- (IBAction)move {
    
// 下面這句話的意思是 告訴控制元件。平移到距離原始位置-50 的位置
    
    //self.btnIcon.transform = CGAffineTransformMakeTranslation(0, -50);
    // 基於 一箇舊的值 在進行平移
    // 基於現有的一個值。再進行平移
  self.btnIcon.transform =  CGAffineTransformTranslate(self.btnIcon.transform, 0, 50);
    
    
}
- (IBAction)clear {
    
    self.btnIcon.transform = CGAffineTransformIdentity;
    
}
- (IBAction)test {
//    for (UIView *view in self.view.subviews) {
//        view.backgroundColor=[UIColor redColor];
//    }
    
    //self.txt1.superview.backgroundColor=[UIColor yellowColor];
//
    

//    UITextField *txt = (UITextField *)[self.view viewWithTag:110];
//    txt.text = @"大軍";
 
    
    while(self.view.subviews.firstObject){
        
        [self.view.subviews.firstObject
         removeFromSuperview];
        
        
    }
    
    
}
@end