//

//  ViewController.m

//  01-exchangeRate

//

//  Created by 王军波 on 16/4/10.

//  Copyright © 2016年 王军波. All rights reserved.

//

#define kScreenW [UIScreen mainScreen].bounds.size.width

#define kScreenH [UIScreen mainScreen].bounds.size.height

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic,weak) UITextField *number;

@property (nonatomic,weak) UILabel *result;

@end

@implementation ViewController

//view加载完后会自动执行

- (void)viewDidLoad {

[super viewDidLoad];

[self setupUI];

// Do any additional setup after loading the view, typically from a nib.

}

#pragma mark - 分割线

//设置界面

- (void)setupUI{

//1.设置背景

UIImageView *bottomBackgroundPicture = [[UIImageView alloc]init];

UIImageView *topBackgroundPicture = [[UIImageView alloc]init];

//1.1上下覆盖灰色背景

//1.1.1灰色背景的尺寸大小

bottomBackgroundPicture.frame = CGRectMake(0, 290, self.view.frame.size.width, self.view.frame.size.height);

topBackgroundPicture.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height*0.03);

//1.1.2灰色背景的颜色设置

bottomBackgroundPicture.backgroundColor = [UIColor grayColor];

topBackgroundPicture.backgroundColor = [UIColor grayColor];

//2.添加到根视图

[self.view addSubview:bottomBackgroundPicture];

[self.view addSubview:topBackgroundPicture];

//3.设置国旗

//3.1两个相框

UIImageView *chinaPicture = [[UIImageView alloc]initWithFrame:CGRectMake(10, 30, 180, 130)];

UIImageView *americanPicture = [[UIImageView alloc]initWithFrame:CGRectMake(10,150 , 180, 130)];

//3.2将照片放到相框中

chinaPicture.image = [UIImage imageNamed:@"China"];

americanPicture.image = [UIImage imageNamed:@"USA"];

//添加到根视图

[self.view addSubview:chinaPicture];

[self.view addSubview:americanPicture];

//4.输入框

UITextField *numText = [[UITextField alloc]initWithFrame:CGRectMake(250, 50, 160, 80)];

//框内的光标在最右边

numText.textAlignment=NSTextAlignmentRight;

//给框设置一个纯数字键盘

numText.keyboardType = UIKeyboardTypeNumberPad;

//[numText sizeToFit];

//4.1输入框的背景颜色

//numText.backgroundColor = [UIColor grayColor];

//添加到根视图

[self.view addSubview:numText];

//赋给全局变量 用以下面换算方法的计算使用

_number = numText;

//创建3个Label

UILabel *num1Label = [[UILabel alloc]initWithFrame:CGRectMake(250, 200, 150, 30)];

UILabel *num2Label = [[UILabel alloc]initWithFrame:CGRectMake(60, 300, 300, 30)];

UILabel *num3Label = [[UILabel alloc]initWithFrame:CGRectMake(45, 330, 350, 30)];

//没啥用 测试

//num1Label.highlightedTextColor = [UIColor redColor];

num1Label.text = @"这里显示结果";

num2Label.text = @"1美元 = 6.4761人民币,更新于2016-4-6";

num3Label.text = @"数据仅供参考,交易时以银行柜台成交价为准";

//num1Label.backgroundColor = [UIColor grayColor];

//num2Label.backgroundColor = [UIColor redColor];

// 用以下面 计算使用

_result = num1Label;

//添加到根视图

[self.view addSubview:num1Label];

[self.view addSubview:num2Label];

[self.view addSubview:num3Label];

//5.按钮

UIButton *calculate = [[UIButton alloc]initWithFrame:CGRectMake(80, 370, 250, 50)];

//5.1默认状态字的颜色

[calculate setTitle:@"计算" forState:UIControlStateNormal];

[calculate setTitleColor:[UIColor colorWithRed:0 green:0 blue:90 alpha:5] forState:UIControlStateNormal];

//5.2高亮状态

[calculate setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];

//5.3底色

calculate.backgroundColor = [UIColor colorWithRed:0 green:30 blue:70 alpha:20];

[self.view addSubview:calculate];

//6.触发事件的实现

[calculate addTarget:self action:@selector(calculate) forControlEvents:UIControlEventTouchUpInside];

}

//7.汇率换算计算的实现

- (void)calculate{

double numRate = 6.4761;

float rmb = _number.text.floatValue;

float dollar = rmb/numRate;

//dollar是float类型,将dollar转成string类型,包装成一个NSNumber的对象,对象的description方法以string形式打出来

_result.text = @(dollar).description;

//或者格式化获取string

//_result.text = [NSString stringWithFormat:@"%f",dollar];

}

@end