虽然都是代码 ， 但是基本都有注释。
#import "ViewController.h"
@interface ViewController ()
/**
* 创建视图
*/
@property(strong,nonatomic) UIView *myView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
/**
初始化视图
*/
self.myView=[[UIView alloc]initWithFrame:CGRectMake(0, 30, 200, 200)];
/**
* 背景色
*/
self.myView.backgroundColor=[UIColor colorWithRed:1.000 green:0.416 blue:0.882 alpha:1.000];
/**
* 添加子视图到view上
*/
[self.view addSubview:self.myView];
self.view.backgroundColor=[UIColor colorWithRed:0.330 green:1.000 blue:0.096 alpha:1.000];
CGRect rec=self.view.frame;
/**
* frame 相对父视图的坐标位置
*/
NSLog(@"view.frame:%@",NSStringFromCGRect(rec));
// bounds 只显示当前视图的大小 和位置无关（0，0）
NSLog(@"myView.bounds:%@",NSStringFromCGRect(self.myView.bounds));
// center 控件相对于父视图的中心点坐标
NSLog(@"%@",NSStringFromCGPoint(self.myView.center));
/**
* 设置视图的中心点坐标
*/
self.myView.center=CGPointMake(300, 350);
/**
* 改变视图的边界
*/
self.myView.bounds=CGRectMake(0, 0, 50, 50);
/**
* CGAffineTrans 让你在原有的视图上进行各种变换
*/
self.myView.transform=CGAffineTransformMakeTranslation(50, 0);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.aview=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
self.aview.backgroundColor=[UIColor colorWithRed:1.000 green:0.305 blue:0.259 alpha:1.000];
self.bview=[[UIView alloc]initWithFrame:CGRectMake(100, 100, 200, 200)];
self.bview.backgroundColor=[UIColor blackColor];
self.cview=[[UIView alloc]initWithFrame:CGRectMake(200, 200, 200, 200)];
self.cview.backgroundColor=[UIColor colorWithRed:0.558 green:0.977 blue:0.584 alpha:1.000];
//添加子视图abc
[self.view addSubview:self.aview];
[self.view addSubview:self.bview];
[self.view addSubview:self.cview];
//插入指定视图 ，在XXX下面
[self.view insertSubview:self.bview belowSubview:self.aview];
//在XXX上面
[self.view insertSubview:self.bview aboveSubview:self.aview];
//在指定插入位置插入子视图
[self.view insertSubview:self.bview atIndex:2];
//在父视图中移除子视图
[self.bview removeFromSuperview];
//交换子视图的索引位置
[self.view exchangeSubviewAtIndex:2 withSubviewAtIndex:3];
//将子视图放在最后
[self.view sendSubviewToBack:self.cview];
//将子视图放在最前
[self.view bringSubviewToFront:self.aview];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
#import "ViewController.h"
@interface ViewController ()
@property(strong,nonatomic) UILabel *labelName;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.labelName=[[UILabel alloc]initWithFrame:CGRectMake(0, 100, 400, 200)];
self.labelName.backgroundColor=[UIColor redColor];
//输入文本
self.labelName.text=@"11135135135135135135";
//文本颜色
self.labelName.textColor=[UIColor blueColor];
//文本对齐方式（居中）
self.labelName.textAlignment=NSTextAlignmentCenter;
//文本字体放大或缩小
self.labelName.font=[UIFont systemFontOfSize:20 weight:20];
//显示行数
self.labelName.numberOfLines=10;
[self.view addSubview:self.labelName];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end