oc UI输入数字n创建n条彩虹 IMP

标签：oc   ui   

RainBow.m

#import "RainBow.h"

@implementation RainBow

{

   NSArray * _colorArray;

}

-(instancetype)initWithFrame:(CGRect)frame withNum:(NSInteger) num{

   self=[superinitWithFrame:frame];

   if(self){

        //1> 加载数据

        [self_loadData];

        num=num<=_colorArray.count?num:_colorArray.count;

        self.backgroundColor=[UIColorwhiteColor];

        //2> 加载子视图

       for(int i=0;i<num;i++){

           UIView * view=[[UIViewalloc] initWithFrame:CGRectMake(0,i*10,self.frame.size.width,10)];

            view.backgroundColor=_colorArray[i];

            [selfaddSubview:view];

        }

        //3> 重新自定义当前父视图的高度

        frame.size.height=10*num;

       self.frame=frame;

    }

    returnself;

}

AppDelegate.m

#import "AppDelegate.h"

int count =0;

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

UIWindow * window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];

    window.backgroundColor = [UIColor whiteColor];

    self.window = window;

    [self.window makeKeyAndVisible];

JRRainBow * view=[[JRRainBowalloc] initWithFrame:CGRectMake(375/2.0-170/2.0,110, 170, 100) withNum:8];

    view.tag=8;

    [self.windowaddSubview:view];

}

oc UI输入数字n创建n条彩虹 IMP

标签：oc   ui   

原文地址：http://blog.csdn.net/zx6268476/article/details/45078517