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iOS開辟中一些手寫控件及其相干屬性的應用

編輯:IOS開發綜合

手寫控件,frame,center和bounds屬性
1、手寫控件

1.手寫控件的步調
(1)應用響應的控件類創立控件對象
(2)設置該控件的各類屬性
(3)添加控件到視圖中
(4)假如是button等控件,還需斟酌控件的單擊事宜等
(5)留意:View Contollor和view的關系
2.留意點
在OC開辟中,Storyboard中的一切操作都可以經由過程代碼完成,法式員必定要闇練控制代碼結構界面的才能!

設置控件監聽辦法的示例代碼以下:

[btn addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

提醒:

1> addTarget辦法界說在UIControl類中,這意味著可以給一切繼續自UIControl類的對象添加監聽辦法

2> 監聽辦法的第一個參數就是對象自己

3> 監聽辦法的第二個參數是監聽控件的事宜

3.代碼示例

//1.應用類創立一個按鈕對象
   // UIButton *headbtn=[[UIButton alloc] initWithFrame:CGRectMake(100 ,100, 100, 100)];
    //設置按鈕對象為自界說型
    UIButton *headbtn=[UIButton buttonWithType:UIButtonTypeCustom];
   
    //2.設置對象的各項屬性
    //(1)地位等通用屬性設置
    headbtn.frame=CGRectMake(100, 100, 100, 100);
   
    //(2)設置通俗狀況下按鈕的屬性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"i"] forState:UIControlStateNormal];
    [headbtn setTitle:@"點我!" forState:UIControlStateNormal];
    [headbtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
   
    //(3)設置高亮狀況下按鈕的屬性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"a"] forState:UIControlStateHighlighted];
    [headbtn setTitle:@"還行吧~" forState:UIControlStateHighlighted];
    [headbtn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
   
    //3.把對象添加到視圖中展示出來
    [self.view addSubview:headbtn];
    //留意點!
    self.headImageView=headbtn;

2、frame,center和bounds屬性

1.frame、center和bounds屬性
frame:掌握地位和年夜小
center:掌握地位(中間點)
bounds:掌握年夜小(以本身的左上角為原點)
2.留意點
(1)經由過程以部屬性可以修正控件的地位

frame.origin

center

(2)經由過程以部屬性可以修正控件的尺寸

frame.size

bounds.size

3.代碼示例

一個掌握圖片高低閣下平移,縮放的法式(frame、center和bounds屬性)

//
//  YYViewController.m
//  01-演習應用按鈕的frame和center屬性
//
//  Created by apple on 14-5-21.
//  Copyright (c) 2014年 itcase. All rights reserved.
//

#import "YYViewController.h"

//公有擴大
@interface YYViewController ()

@property(nonatomic,weak)IBOutlet UIButton *headImageView;
@end

@implementation YYViewController

//列舉類型,從1開端
typedef enum
{
    ktopbtntag=1,
    kdownbtntag,
    krightbtntag,
    kleftbtntag
}btntag;

//viewDidLoad是視圖加載完成後挪用的辦法,平日在此辦法中履行視圖掌握器的初始化任務
- (void)viewDidLoad
{
   
    //在viewDidLoad辦法中,不要忘卻挪用父類的辦法完成
    [super viewDidLoad];

   
    //手寫控件代碼
    //1、寫一個按鈕控件,下面有一張圖片
   
    //1.應用類創立一個按鈕對象
   // UIButton *headbtn=[[UIButton alloc] initWithFrame:CGRectMake(100 ,100, 100, 100)];
    //設置按鈕對象為自界說型
    UIButton *headbtn=[UIButton buttonWithType:UIButtonTypeCustom];
   
    //2.設置對象的各項屬性
    //(1)地位等通用屬性設置
    headbtn.frame=CGRectMake(100, 100, 100, 100);
   
    //(2)設置通俗狀況下按鈕的屬性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"i"] forState:UIControlStateNormal];
    [headbtn setTitle:@"點我!" forState:UIControlStateNormal];
    [headbtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
   
    //(3)設置高亮狀況下按鈕的屬性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"a"] forState:UIControlStateHighlighted];
    [headbtn setTitle:@"還行吧~" forState:UIControlStateHighlighted];
    [headbtn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
   
    //3.把對象添加到視圖中展示出來
    [self.view addSubview:headbtn];
    //留意點!
    self.headImageView=headbtn;

   
    //2、寫四個掌握圖片閣下高低挪動偏向的按鈕控件
   
    /**================向上的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *topbtn=[UIButton buttonWithType:UIButtonTypeCustom];
   
    //2.設置對象的屬性
    topbtn.frame=CGRectMake(100, 250, 40, 40);
    [topbtn setBackgroundImage:[UIImage imageNamed:@"top_normal"] forState:UIControlStateNormal];
    [topbtn setBackgroundImage:[UIImage imageNamed:@"top_highlighted"] forState:UIControlStateHighlighted];
    [topbtn setTag:1];
    //3.把控件添加到視圖中
    [self.view addSubview:topbtn];
   
    //4.按鈕的單擊掌握事宜
    [topbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
   
   
      /**================向下的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *downbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置對象的屬性
    downbtn.frame=CGRectMake(100, 350, 40, 40);
    [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_normal"] forState:UIControlStateNormal];
    [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_highlighted"] forState:UIControlStateHighlighted];
    [downbtn setTag:2];
    //3.把控件添加到視圖中
    [self.view addSubview:downbtn];
   
    //4.按鈕的單擊掌握事宜
    [downbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];

   
     /**================向左的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *leftbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置對象的屬性
    leftbtn.frame=CGRectMake(50, 300, 40, 40);
    [leftbtn setBackgroundImage:[UIImage imageNamed:@"left_normal"] forState:UIControlStateNormal];
    [leftbtn setBackgroundImage:[UIImage imageNamed:@"left_highlighted"] forState:UIControlStateHighlighted];
    [leftbtn setTag:4];
    //3.把控件添加到視圖中
    [self.view addSubview:leftbtn];
   
    //4.按鈕的單擊掌握事宜
    [leftbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
   
   
   
    /**================向右的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *rightbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置對象的屬性
    rightbtn.frame=CGRectMake(150, 300, 40, 40);
    [rightbtn setBackgroundImage:[UIImage imageNamed:@"right_normal"] forState:UIControlStateNormal];
    [rightbtn setBackgroundImage:[UIImage imageNamed:@"right_highlighted"] forState:UIControlStateHighlighted];
    [rightbtn setTag:3];
    //3.把控件添加到視圖中
    [self.view addSubview:rightbtn];
   
    //4.按鈕的單擊掌握事宜
    [rightbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
   
      //3、寫兩個縮放按鈕
       /**================縮小的按鈕=====================*/
    //1.創立對象
    UIButton *plusbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置屬性
    plusbtn.frame=CGRectMake(75, 400, 40, 40);
    [plusbtn setBackgroundImage:[UIImage imageNamed:@"plus_normal"] forState:UIControlStateNormal];
    [plusbtn setBackgroundImage:[UIImage imageNamed:@"plus_highlighted"] forState:UIControlStateHighlighted];
    [plusbtn setTag:1];
    //3.添加到視圖
    [self.view addSubview:plusbtn];
    //4.單擊事宜
    [plusbtn addTarget:self action:@selector(Zoom:) forControlEvents:UIControlEventTouchUpInside];
   
   
    /**================減少的按鈕=====================*/
    UIButton *minusbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    minusbtn.frame=CGRectMake(125, 400, 40, 40);
    [minusbtn setBackgroundImage:[UIImage imageNamed:@"minus_normal"] forState:UIControlStateNormal];
    [minusbtn setBackgroundImage:[UIImage imageNamed:@"minus_highlighted"] forState:UIControlStateHighlighted];
    [minusbtn setTag:0];
    [self.view addSubview:minusbtn];
    [minusbtn addTarget:self action:@selector(Zoom:) forControlEvents:UIControlEventTouchUpInside];
}

//掌握偏向的多個按鈕挪用統一個辦法
-(void)Click:(UIButton *)button
{

    //演習應用frame屬性
    //CGRect frame=self.headImageView.frame;
   
    /**留意,這裡假如掌握地位的兩個屬性frame和center同時應用的話,會湧現很好玩的後果,留意剖析*/
    //演習應用center屬性
    CGPoint center=self.headImageView.center;
    switch (button.tag) {
        case ktopbtntag:
            center.y-=30;
            break;
        case kdownbtntag:
            center.y+=30;
            break;
        case kleftbtntag:
            //發明一個bug,之前的成績是由於少寫了break,形成了它們的次序履行,sorry
           //center.x=center.x-30;
            center.x-=50;
            break;
        case krightbtntag:
            center.x+=50;
            break;
    }
   
 //  self.headImageView.frame=frame;
   
    //首尾式設置動畫後果
    [UIView beginAnimations:nil context:nil];
    self.headImageView.center=center;
    //設置時光
    [UIView setAnimationDuration:2.0];
    [UIView commitAnimations];
    NSLog(@"挪動!");
   
}
-(void)Zoom:(UIButton *)btn
{
    //應用frame,以本身的左上角(本身的原點)為原點
//    CGRect frame=self.headImageView.frame;
//    if (btn.tag) {
//        frame.size.height+=30;
//        frame.size.width+=30;
//    }
//    else
//    {
//        frame.size.width-=50;
//        frame.size.height-=50;
//    }
//    self.headImageView.frame=frame;
   
   
    //應用bounds,以中間點位原點停止縮放
    CGRect bounds = self.headImageView.bounds;
    if (btn.tag) {
        bounds.size.height+=30;
        bounds.size.width+=30;
    }
    else
    {
        bounds.size.height-=50;
        bounds.size.width-=50;
    }
   
    //設置首尾動畫
    [UIView beginAnimations:nil context:nil];
    self.headImageView.bounds=bounds;
    [UIView setAnimationDuration:2.0];
    [UIView commitAnimations];
}
@end

完成後果:

2015123192725801.png (640×960)

3、簡略的動畫後果

簡略引見首尾式動畫後果
(1)開端動畫
(2)設置動畫相干的時光等
(3)介入動畫的行為
(4)提交動畫
注:完成代碼參考下面的代碼
 
4、transframe屬性(形變)
1. transform屬性

在OC中,經由過程transform屬性可以修正對象的平移、縮放比例和扭轉角度

經常使用的創立transform構造體辦法分兩年夜類

(1) 創立“基於控件初始地位”的形變

CGAff.netransformMakeTranslation(平移)

CGAff.netransformMakeScale(縮放)

CGAffineTransformMakeRotation(扭轉)

 

(2) 創立“基於transform參數”的形變

CGAffineTransformTranslate

CGAffineTransformScale

CGAffineTransformRotate

 

彌補:

在OC中,一切跟角度相干的數值,都是弧度值,180° = M_PI

負數表現順時針扭轉

正數表現逆時針扭轉

 

提醒:因為transform屬性可以基於控件的上一次的狀況停止疊加形變,例如,先扭轉再平移。是以在現實動畫開辟中,當觸及地位、尺寸形變後果時,年夜多修正控件的transform屬性,而不是frame、bounds、center 。

2.代碼示例

//
//  YYViewController.m
//  01-演習應用按鈕的frame和center屬性
//
//  Created by apple on 14-5-21.
//  Copyright (c) 2014年 itcase. All rights reserved.
//

#import "YYViewController.h"

//公有擴大
@interface YYViewController ()

@property(nonatomic,weak)IBOutlet UIButton *headImageView;
@end


@implementation YYViewController

//列舉類型,從1開端
//列舉類型有一個很年夜的感化,就是用來取代法式中的魔法數字
typedef enum
{
    ktopbtntag=1,
    kdownbtntag,
    krightbtntag,
    kleftbtntag
}btntag;

//viewDidLoad是視圖加載完成後挪用的辦法,平日在此辦法中履行視圖掌握器的初始化任務
- (void)viewDidLoad
{
   
    //在viewDidLoad辦法中,不要忘卻挪用父類的辦法完成
    [super viewDidLoad];

   
    //手寫控件代碼
    //1、寫一個按鈕控件,下面有一張圖片
   
    //1.應用類創立一個按鈕對象
   // UIButton *headbtn=[[UIButton alloc] initWithFrame:CGRectMake(100 ,100, 100, 100)];
    //設置按鈕對象為自界說型
    UIButton *headbtn=[UIButton buttonWithType:UIButtonTypeCustom];
   
    //2.設置對象的各項屬性
   
    //(1)地位等通用屬性設置
    headbtn.frame=CGRectMake(100, 100, 100, 100);
   
    //(2)設置通俗狀況下按鈕的屬性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"i"] forState:UIControlStateNormal];
    [headbtn setTitle:@"點我!" forState:UIControlStateNormal];
    [headbtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
   
    //(3)設置高亮狀況下按鈕的屬性
    [headbtn setBackgroundImage:[UIImage imageNamed:@"a"] forState:UIControlStateHighlighted];
    [headbtn setTitle:@"還行吧~" forState:UIControlStateHighlighted];
    [headbtn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
   
    //3.把對象添加到視圖中展示出來
    [self.view addSubview:headbtn];
    //留意點!
    self.headImageView=headbtn;

   
    //2、寫四個掌握圖片閣下高低挪動偏向的按鈕控件
   
    /**================向上的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *topbtn=[UIButton buttonWithType:UIButtonTypeCustom];
   
    //2.設置對象的屬性
    topbtn.frame=CGRectMake(100, 250, 40, 40);
    [topbtn setBackgroundImage:[UIImage imageNamed:@"top_normal"] forState:UIControlStateNormal];
    [topbtn setBackgroundImage:[UIImage imageNamed:@"top_highlighted"] forState:UIControlStateHighlighted];
    [topbtn setTag:1];
    //3.把控件添加到視圖中
    [self.view addSubview:topbtn];
   
    //4.按鈕的單擊掌握事宜
    [topbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
   
   
      /**================向下的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *downbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置對象的屬性
    downbtn.frame=CGRectMake(100, 350, 40, 40);
    [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_normal"] forState:UIControlStateNormal];
    [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_highlighted"] forState:UIControlStateHighlighted];
    [downbtn setTag:2];
    //3.把控件添加到視圖中
    [self.view addSubview:downbtn];
   
    //4.按鈕的單擊掌握事宜
    [downbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];

   
     /**================向左的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *leftbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置對象的屬性
    leftbtn.frame=CGRectMake(50, 300, 40, 40);
    [leftbtn setBackgroundImage:[UIImage imageNamed:@"left_normal"] forState:UIControlStateNormal];
    [leftbtn setBackgroundImage:[UIImage imageNamed:@"left_highlighted"] forState:UIControlStateHighlighted];
    [leftbtn setTag:4];
    //3.把控件添加到視圖中
    [self.view addSubview:leftbtn];
   
    //4.按鈕的單擊掌握事宜
    [leftbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
   
   
   
    /**================向右的按鈕=====================*/
    //1.創立按鈕對象
    UIButton *rightbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置對象的屬性
    rightbtn.frame=CGRectMake(150, 300, 40, 40);
    [rightbtn setBackgroundImage:[UIImage imageNamed:@"right_normal"] forState:UIControlStateNormal];
    [rightbtn setBackgroundImage:[UIImage imageNamed:@"right_highlighted"] forState:UIControlStateHighlighted];
    [rightbtn setTag:3];
    //3.把控件添加到視圖中
    [self.view addSubview:rightbtn];
   
    //4.按鈕的單擊掌握事宜
    [rightbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
   
      //3、寫兩個縮放按鈕
       /**================縮小的按鈕=====================*/
    //1.創立對象
    UIButton *plusbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    //2.設置屬性
    plusbtn.frame=CGRectMake(75, 400, 40, 40);
    [plusbtn setBackgroundImage:[UIImage imageNamed:@"plus_normal"] forState:UIControlStateNormal];
    [plusbtn setBackgroundImage:[UIImage imageNamed:@"plus_highlighted"] forState:UIControlStateHighlighted];
    [plusbtn setTag:1];
    //3.添加到視圖
    [self.view addSubview:plusbtn];
    //4.單擊事宜
    [plusbtn addTarget:self action:@selector(Zoom:) forControlEvents:UIControlEventTouchUpInside];
   
   
    /**================減少的按鈕=====================*/
    UIButton *minusbtn=[UIButton buttonWithType:UIButtonTypeCustom];
    minusbtn.frame=CGRectMake(125, 400, 40, 40);
    [minusbtn setBackgroundImage:[UIImage imageNamed:@"minus_normal"] forState:UIControlStateNormal];
    [minusbtn setBackgroundImage:[UIImage imageNamed:@"minus_highlighted"] forState:UIControlStateHighlighted];
    [minusbtn setTag:0];
    [self.view addSubview:minusbtn];
    [minusbtn addTarget:self action:@selector(Zoom:) forControlEvents:UIControlEventTouchUpInside];
   
    /**================向左扭轉按鈕=====================*/
    UIButton *leftrotatebtn=[UIButton buttonWithType:UIButtonTypeCustom];
    [leftrotatebtn setFrame:CGRectMake(175, 400, 40, 40)];
    [leftrotatebtn setBackgroundImage:[UIImage imageNamed:@"left_rotate_normal"] forState:UIControlStateNormal];
    [leftrotatebtn setBackgroundImage:[UIImage imageNamed:@"left_rotate_highlighted"] forState:UIControlStateHighlighted];
    [leftrotatebtn setTag:1];
    [self.view addSubview:leftrotatebtn];
    [leftrotatebtn addTarget:self action:@selector(Rotate:) forControlEvents:UIControlEventTouchUpInside];
   
    /**================向右扭轉按鈕=====================*/
    UIButton *rightrotatebtn=[UIButton buttonWithType:UIButtonTypeCustom];
    [rightrotatebtn setFrame:CGRectMake(225, 400, 40, 40)];
    [rightrotatebtn setBackgroundImage:[UIImage imageNamed:@"right_rotate_normal"] forState:UIControlStateNormal];
    [rightrotatebtn setBackgroundImage:[UIImage imageNamed:@"right_rotate_highlighted"] forState:UIControlStateHighlighted];
    [rightbtn setTag:0];
    [self.view addSubview:rightrotatebtn];
    [rightrotatebtn addTarget:self action:@selector(Rotate:) forControlEvents:UIControlEventTouchUpInside];
}

//掌握偏向的多個按鈕挪用統一個辦法
-(void)Click:(UIButton *)button
{

    //演習應用frame屬性
    //CGRect frame=self.headImageView.frame;
   
    /**留意,這裡假如掌握地位的兩個屬性frame和center同時應用的話,會湧現很好玩的後果,留意剖析*/
    //演習應用center屬性
    CGPoint center=self.headImageView.center;
    switch (button.tag) {
        case ktopbtntag:
            center.y-=30;
            break;
        case kdownbtntag:
            center.y+=30;
            break;
        case kleftbtntag:
            //發明一個bug,之前的成績是由於少寫了break,形成了它們的次序履行,sorry
           //center.x=center.x-30;
            center.x-=50;
            break;
        case krightbtntag:
            center.x+=50;
            break;
    }
   
 //  self.headImageView.frame=frame;
   
    //首尾式設置動畫後果
    [UIView beginAnimations:nil context:nil];
    self.headImageView.center=center;
    //設置時光
    [UIView setAnimationDuration:2.0];
    [UIView commitAnimations];
    NSLog(@"挪動!");
   
}
-(void)Zoom:(UIButton *)btn
{
    //應用bounds,以中間點位原點停止縮放
    CGRect bounds = self.headImageView.bounds;
    if (btn.tag) {
        bounds.size.height+=30;
        bounds.size.width+=30;
    }
    else
    {
        bounds.size.height-=50;
        bounds.size.width-=50;
    }
   
    //設置首尾動畫
    [UIView beginAnimations:nil context:nil];
    self.headImageView.bounds=bounds;
    [UIView setAnimationDuration:2.0];
    [UIView commitAnimations];
}

-(void)Rotate:(UIButton *)rotate
{
    //位移(不累加)
    //self.headImageView.transform=CGAffineTransformMakeTranslation(50, 200);
    //縮放
    //self.headImageView.transform=CGAffineTransformMakeScale(1.2, 10);
    //在原本的基本上位移(是累加的)
    //self.headImageView.transform=CGAffineTransformTranslate(self.headImageView.transform, 50, 50);
    //在原本的基本長進行縮放
    //self.headImageView.transform=CGAffineTransformScale(self.headImageView.transform, 1.5, 1.6);
   
    //在原本的基本長進行扭轉
    if (rotate.tag) {
        //扭轉角度為1/pi,逆時針
        self.headImageView.transform=CGAffineTransformRotate(self.headImageView.transform, -M_1_PI);
    }
    else
    {
        //扭轉的角度為pi/2,順時針
    self.headImageView.transform=CGAffineTransformRotate(self.headImageView.transform, M_PI_2);
    }
   
}
@end

完成後果:

2015123193301745.png (640×960)

3.viewDidLoad

viewDidLoad是視圖加載完成後挪用的辦法,平日在此辦法中履行視圖掌握器的初始化任務

在viewDidLoad辦法中,必定不要忘卻挪用父類的辦法完成

[super viewDidLoad];

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