IOS开发中使用UIFont设置字体及批量创建控件

//屏幕尺寸CGRect rect = [[UIScreen mainScreen] bounds];  CGSize size = rect.size;  CGFloat width = size.width;  CGFloat height = size.height;  NSLog(@"print %f,%f",width,height);//分辨率CGFloat scale_screen = [UIScreen mainScreen].scale;width*scale_screen,height*scale_screen

#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {  [super viewDidLoad];    //  定义一个可变数组，用来存放所有字体  NSMutableArray *fontarray = [NSMutableArray arrayWithCapacity:10];//  遍历UI字体  for (id x in [UIFont familyNames]) {    NSLog(@"%@",x);    [fontarray addObject:x];  }    //  直接把字体存储到数组中  NSArray *fontarrauy2 = [UIFont familyNames];  NSLog(@"%@",fontarrauy2);    //  创建一个label，用来显示设定某种字体的字符串  UILabel *mylab1 = [[UILabel alloc]initWithFrame:CGRectMake(100, 100, 200, 50)];  mylab1.font = [UIFont systemFontOfSize:20];  mylab1.font = [UIFont fontWithName:@"Zapfino" size:18];  mylab1.font = [UIFont fontWithName:[fontarray objectAtIndex:10] size:18];  mylab1.text = @"HelloWorld";  [self.view addSubview:mylab1];  //  新建一个可变数组，用来存放使用for循环批量创建的label  NSMutableArray *labarr = [NSMutableArray arrayWithCapacity:100];    for (int x=0; x<24; x++) {    for (int y=0; y<3; y++) {//      循环创建72个label，每个label横向间距135-130=5，纵向间距30-28=2，      UILabel *lab = [[UILabel alloc]initWithFrame:CGRectMake(y*135+7, x*30+20, 130, 28)];      lab.backgroundColor = [UIColor colorWithRed:0.820 green:0.971 blue:1.000 alpha:1.000];      lab.text = @"HelloWorld";//      将创建好的label加入到可变数组      [labarr addObject:lab];    }  }  //  使用for循环给72个label的字体设置各种字体格式  for (int i=0; i<72; i++) {    UILabel *lab = [labarr objectAtIndex:i];    NSString *fontstring = [fontarray objectAtIndex:i];    lab.font = [UIFont fontWithName:fontstring size:18];    [self.view addSubview:[labarr objectAtIndex:i]];  }  }- (void)didReceiveMemoryWarning {  [super didReceiveMemoryWarning];  // Dispose of any resources that can be recreated.}@end