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//
//? ViewController.m
//? 01-exchangeRate
//
//? Created by 王军波 on 16/4/10.
//? Copyright ? 2016年 王军波. All rights reserved.
//
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#define kScreenW [UIScreen mainScreen].bounds.size.width
#define kScreenH [UIScreen mainScreen].bounds.size.height
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#import "ViewController.h"
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@interface ViewController ()
@property (nonatomic,weak) UITextField *number;
@property (nonatomic,weak) UILabel *result;
@end
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@implementation ViewController
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//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];
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? ? //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];
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? ? //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;
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? ? //[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];
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? ? //赋给全局变量 用以下面换算方法的计算使用
? ? _number = numText;
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? ? //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)];
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? ? //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];
? ? ?
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? ? //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];
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? ? [self.view addSubview:calculate];
? ? //6.触发事件的实现
? ? [calculate addTarget:self action:@selector(calculate) forControlEvents:UIControlEventTouchUpInside];
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}
//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
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