IOS 作业项目(4)步步完成 画图 程序(上)

先上流程图

一,首先在.h中声明UIViewController类属性

//界面
@property(nonatomic,strong)UIView *mainScene;
@property(nonatomic,strong)UIView *aboutScene;
@property(nonatomic,strong)UIView *editScene;
@property(nonatomic,strong)UIView *lineColorScene;
@property(nonatomic,strong)UIView *bgColorScene;
@property(nonatomic,strong)UIView *lineWidthScene;
@property(nonatomic,strong)UIView *detailScene;
二,在.m文件中做好初始化和框架

//七大视图作为本类的属性,便于在类的内部调用
//视图加载完后,添加7大视图容器
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    [self.view addSubview:self.mainScene];
    [self.view addSubview:self.aboutScene];
    [self.view addSubview:self.editScene];
    [self.view addSubview:self.lineColorScene];
    [self.view addSubview:self.bgColorScene];
    [self.view addSubview:self.lineWidthScene];
    [self.view addSubview:self.detailScene];
}

//当根视图将要显示时会触发这个方法
-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    //将首页提前
    [self.view bringSubviewToFront:self.mainScene];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark -property methods
-(UIView *)mainScene
{
    //如果不等于空 则实例化场景
    if (_mainScene!=Nil) {
        return _mainScene;
    }
   
    _mainScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _mainScene.backgroundColor=[UIColor whiteColor];
    //实例化测试控制按钮
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"About" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"Drawing" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"New" atIndex:0 animated:NO];
    testControl.tag=KMainSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_mainScene addSubview:testControl];
    return _mainScene;
}

-(UIView *)aboutScene
{
     //如果不等于空 则实例化场景
    if (_aboutScene!=Nil) {
        return _aboutScene;
    }
    _aboutScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _aboutScene.backgroundColor=[UIColor whiteColor];
    
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"Drawing" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"Back" atIndex:0 animated:NO];
    testControl.tag=KAboutSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_aboutScene addSubview:testControl];
    return _aboutScene;
}

-(UIView *)editScene
{
    //如果不等于空 则实例化场景
    if (_editScene!=Nil) {
        return _editScene;
    }
    _editScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _editScene.backgroundColor=[UIColor grayColor];
    
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"背景" atIndex:0 animated:NO];
     [testControl insertSegmentWithTitle:@"画笔颜色" atIndex:0 animated:NO];
     [testControl insertSegmentWithTitle:@"画笔大小" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"Back" atIndex:0 animated:NO];
    testControl.tag=KEditSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_editScene addSubview:testControl];

return _editScene;
}

-(UIView *)lineColorScene
{
      //如果不等于空 则实例化场景
    if (_lineColorScene!=Nil) {
        return _lineColorScene;
    }
    _lineColorScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _lineColorScene.backgroundColor=[UIColor blueColor];
    
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"完成" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"画笔颜色" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"取消" atIndex:0 animated:NO];
    testControl.tag=KLineColorSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_lineColorScene addSubview:testControl];

return _lineColorScene;
}

-(UIView *)bgColorScene
{
     //如果不等于空 则实例化场景
    if (_bgColorScene!=Nil) {
        return _bgColorScene;
    }
    _bgColorScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _bgColorScene.backgroundColor=[UIColor greenColor];
    
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"完成" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"背景颜色" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"取消" atIndex:0 animated:NO];
    testControl.tag=KBgColorSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_bgColorScene addSubview:testControl];

return _bgColorScene;
}

-(UIView *)lineWidthScene
{
     //如果不等于空 则实例化场景
    if (_lineWidthScene!=Nil) {
        return _lineWidthScene;
    }
    _lineWidthScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _lineWidthScene.backgroundColor=[UIColor brownColor];
    
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"完成" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"画笔大小" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"取消" atIndex:0 animated:NO];
    testControl.tag=KLineWidthSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_lineWidthScene addSubview:testControl];

return _lineWidthScene;
}

-(UIView *)detailScene
{
      //如果不等于空 则实例化场景
    if (_detailScene!=Nil) {
        return _detailScene;
    }
    _detailScene=[[UIView alloc]initWithFrame:self.view.bounds];
    _detailScene.backgroundColor=[UIColor yellowColor];
    
    CGRect frame=CGRectMake(0, 100, 320, 60);
    UISegmentedControl *testControl=[[UISegmentedControl alloc]initWithFrame:frame];
    testControl.momentary=YES;
    [testControl insertSegmentWithTitle:@"Delete" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"" atIndex:0 animated:NO];
    [testControl insertSegmentWithTitle:@"Back" atIndex:0 animated:NO];
    testControl.tag=KDetailSceneTestControlTag;
    //添加测试按钮触发的测试方法
    [testControl addTarget:self action:@selector(testSegue:) forControlEvents:UIControlEventValueChanged];
    [_detailScene addSubview:testControl];

return _detailScene;
}

三,每个页面都得跳转,跳转方法添加如下: 　　　　(出口方法不确定是否有参数,我们传递一个参数为id类型)

#pragma mark -mainScene         出口方法
-(void)mainSceneToAboutScene:(id)sender
{
    //将关于界面提前
    [self.view bringSubviewToFront:self.aboutScene];
}
-(void)mainSceneToEditScene:(id)sender
{
    //将编辑界面提前
    [self.view bringSubviewToFront:self.editScene];
}
-(void)mainSceneToDetailScene:(id)sender
{
    //将详细界面提前
    [self.view bringSubviewToFront:self.detailScene];
}

#pragma mark -aboutScene        出口方法
-(void)aboutSceneBackMainScene:(id)sender
{
    //返回主界面
    [self.view bringSubviewToFront:self.mainScene];
}

#pragma mark -editScene         出口方法
-(void)editSceneToLineColorScene:(id)sender
{
    //将lineColor界面提前
    [self.view bringSubviewToFront:self.lineColorScene];
}

-(void)editSceneToBgColorScene:(id)sender
{
    //将BgColorScene界面提前
    [self.view bringSubviewToFront:self.bgColorScene];
}

-(void)editSceneToLineWidthScene:(id)sender
{
    //LineWidthScene提前
    [self.view bringSubviewToFront:self.lineWidthScene];
}

-(void)editSceneBackMainScene:(id)sender
{
    //MainScene提前
    [self.view bringSubviewToFront:self.mainScene];
}

#pragma mark -lineColorScene    出口方法
-(void)lineColorSceneBackEditScene:(id)sender
{
    //editScene提前
    [self.view bringSubviewToFront:self.editScene];
}

#pragma mark -bgColorScene      出口方法
-(void)bgColorSceneBackEditScene:(id)sender
{
    //editScene提前
    [self.view bringSubviewToFront:self.editScene];
}

#pragma mark -lineWidthScene    出口方法
-(void)lineWidthSceneBackEditScene:(id)sender
{
    //editScene提前
    [self.view bringSubviewToFront:self.editScene];
}

#pragma mark -detailScene       出口方法
-(void)detailSceneToEditScene:(id)sender
{
    //editScene提前
    [self.view bringSubviewToFront:self.editScene];
}

-(void)detailSceneBackMainScene:(id)sender
{
    //mainScene提前
    [self.view bringSubviewToFront:self.mainScene];
}

四,定义页面的tag作为宏

#define KMainSceneTestControlTag        1001
#define KAboutSceneTestControlTag       1002
#define KEditSceneTestControlTag        1003
#define KLineColorSceneTestControlTag   1004
#define KBgColorSceneTestControlTag     1005
#define KLineWidthSceneTestControlTag   1006
#define KDetailSceneTestControlTag      1007

五,实现跳转,都是一个模式,看一个就知道其他的了,下面把所有的都列举出来,其实并不复杂

#pragma mark --测试程序流程的方法
-(void)testSegue:(UISegmentedControl *)testControl
{
    switch (testControl.tag) {
        case KMainSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                    [self mainSceneToEditScene:nil];
                    break;
                }
                case 1:
                {
                    break;
                }
                case 2:
                {
                    [self mainSceneToAboutScene:nil];
                    break;
                }
                    
                default:
                    break;
            }
             break;
        }
            
        case KAboutSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                    [self aboutSceneBackMainScene:nil];
                    break;
                }
                case 1:
                {
                    
                    break;
                }
                case 2:
                {
                    
                    break;
                }
                    
                default:
                    break;
            }
            break;
        }
        case KEditSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                    [self editSceneBackMainScene:nil];
                    break;
                }
                case 1:
                {
                    [self editSceneToBgColorScene:nil];
                    break;
                }
                case 2:
                {
                    [self editSceneToLineColorScene:nil];
                    break;
                }
                case 3:
                {
                    [self editSceneToLineWidthScene:nil];
                    break;
                }
                  
                default:
                    break;
            }
            break;
        }
            
        case KLineColorSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                   [self lineColorSceneBackEditScene:nil];
                    break;
                }
                case 1:
                {
                   
                    break;
                }
                case 2:
                {
                    [self lineColorSceneBackEditScene:nil];
                    break;
                }
                    
                default:
                    break;
            }
            break;
        }
        case KLineWidthSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                    [self lineWidthSceneBackEditScene:nil];

break;
                }
                case 1:
                {
                    
                    break;
                }
                case 2:
                {
                    [self lineWidthSceneBackEditScene:nil];
                    break;
                }
                    
                default:
                    break;
            }
            break;
        }
            
        case KBgColorSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                    [self bgColorSceneBackEditScene:nil];
                    break;
                }
                case 1:
                {
                    
                    break;
                }
                case 2:
                {
                   [self bgColorSceneBackEditScene:nil];
                    break;
                }
                    
                default:
                    break;
            }
            break;
        }
        case KDetailSceneTestControlTag:
        {
            switch (testControl.selectedSegmentIndex) {
                case 0:
                {
                    [self detailSceneToEditScene:nil];
                    break;
                }
                case 1:
                {
                    
                    break;
                }
                case 2:
                {
                    [self detailSceneBackMainScene:nil];
                    break;
                }
                    
                default:
                    break;
            }
            break;
        }           
        default:
            break;
            
    }