二十六天( UI开始)

button,textfield,label

主要代码

#import "ViewController.h"

@interface ViewController ()<UIText
a218
FieldDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

CGSize size=[UIScreen mainScreen].bounds.size;//获取当前设备的屏幕设计分辨率
NSLog(@"%f %f",size.width,size.height);
// Do any additional setup after loading the view, typically from a nib.

textfieldfirst=[[UITextField alloc]initWithFrame:CGRectMake(0*size.width/5+5, 200, size.width/5, 40)];//初始化控件
// textfieldfirst.backgroundColor=[UIColor redColor];

textfieldsecond=[[UITextField alloc]initWithFrame:CGRectMake(2*size.width/5+5,200, size.width/5, 40)];
// textfieldsecond.backgroundColor=[UIColor redColor];

textfieldfirst.clearButtonMode=UITextFieldViewModeAlways;// 添加清除按钮
textfieldsecond.clearButtonMode=UITextFieldViewModeAlways;
textfieldfirst.keyboardType=UIKeyboardTypeNumbersAndPunctuation;
textfieldsecond.keyboardType=UIKeyboardTypeNumbersAndPunctuation;//设置键盘类型
[textfieldfirst setBorderStyle:UITextBorderStyleLine];
[textfieldsecond setBorderStyle:UITextBorderStyleLine];//添加线框
[textfieldfirst setFont:[UIFont systemFontOfSize:24]];//设置字体大小
textfieldfirst.delegate=self;
textfieldsecond.delegate=self;

[self.view addSubview:textfieldfirst];//添加到视图
[self.view addSubview:textfieldsecond];

label=[[UILabel alloc]initWithFrame:CGRectMake(1*size.width/5+5, 200, size.width/5, 30)];
label.text=@"+";
[label setTextAlignment:NSTextAlignmentCenter];//设置居中
[self.view addSubview:label];

UIButton *btn1=[[UIButton alloc]initWithFrame:CGRectMake(3*size.width/5+5,200, size.width/5, 40)];
// btn1.backgroundColor=[UIColor redColor];
[btn1 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];// 设置字体颜色
[btn1 setTitle:@"=" forState:UIControlStateNormal];
[btn1 setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
//添加事件
[btn1 addTarget:self action:@selector(resultoutput:) forControlEvents:UIControlEventTouchDown];

[self.view addSubview:btn1];

resultlabel=[[UILabel alloc]initWithFrame:CGRectMake(4*size.width/5+5, 200, size.width/5, 40)];

[self.view addSubview:resultlabel];

}
-(void)resultoutput:(id)sender{
resultlabel.text=@"0";
resultlabel.text=[NSString stringWithFormat:@"%d",[textfieldfirst.text intValue]+[textfieldsecond.text intValue]];
}
//键盘退出
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}