IOS 仿自带计算器
ViewController.h
#import
@interface ViewController : UIViewController{
UIButton * btn;
UILabel *label;
UIButton *btn0;
UIButton *btndian;
int btn_width,btn_height;
int what;
}
@property(retain,nonatomic) NSMutableString *mString;
@property(retain,nonatomic) NSString *string;
@property(assign,nonatomic) double num1,num2;
@end
ViewController.m
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
CGRect rx = [ UIScreen mainScreen ].bounds;
btn_height = 100;
btn_width = rx.size.width/4+1;
what = -1;
label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, rx.size.width, rx.size.height-5*btn_height)];
label.backgroundColor = [UIColor blackColor];
label.textColor = [UIColor whiteColor];
label.text = @"";
label.font = [UIFont fontWithName:@"Times new Roman" size:50];
label.adjustsFontSizeToFitWidth = YES;
label.textAlignment = UITextAlignmentRight; //字体居右
[self.view addSubview:label];
NSArray *array1=[NSArray arrayWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9", nil];
int n=0;
for (int i=0; i<3; i++)
{
for (int j=0; j<3; j++)
{
btn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame=CGRectMake(btn_width*j, rx.size.height-btn_height*(4-i), btn_width, btn_height);
btn.backgroundColor = [UIColor colorWithRed:196/255.0 green:200 /255.0 blue:201/255.0 alpha:1];
btn.font = [UIFont fontWithName:@"STHeitiJ-Light" size:50];
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
btn.layer.borderWidth = 0.6;
[btn.layer setBorderColor:[UIColor grayColor].CGColor];
[btn setTitle:[array1 objectAtIndex:n++] forState:UIControlStateNormal]; //注意：[array objectAtIndex:n++]
[self.view addSubview:btn];
[btn addTarget:self action:@selector(shuzi:) forControlEvents:UIControlEventTouchUpInside]; //addTarget:self 的意思是说，这个方法在本类中也可以传入其他类的指针
}
}
n = 0;
NSArray *array2=[NSArray arrayWithObjects:@"/",@"*",@"-",@"+", @"=",nil];
for (int i=0; i<5; i++)
{
btn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame=CGRectMake(btn_width*3, rx.size.height-btn_height*(5-i), btn_width, btn_height);
btn.font = [UIFont fontWithName:@"STHeitiJ-Light" size:50];
[btn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
btn.layer.borderWidth = 0.6;
[btn.layer setBorderColor:[UIColor grayColor].CGColor];
btn.backgroundColor = [UIColor colorWithRed:249/255.0 green:136 /255.0 blue:16/255.0 alpha:1];
[btn setTitle:[array2 objectAtIndex:n++] forState:UIControlStateNormal]; //注意：[array objectAtIndex:n++]
[self.view addSubview:btn];
[btn addTarget:self action:@selector(cacula:) forControlEvents:UIControlEventTouchUpInside];
}
btn0 = [[UIButton alloc]initWithFrame:CGRectMake(0, rx.size.height-btn_height, 2*btn_width, btn_height)];
[btn0 setTitle:@"0" forState:UIControlStateNormal];
btn0.backgroundColor = [UIColor colorWithRed:196/255.0 green:200 /255.0 blue:201/255.0 alpha:1];
btn0.font = [UIFont fontWithName:@"STHeitiJ-Light" size:50];
[btn0 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
btn0.layer.borderWidth = 0.6;
[btn0.layer setBorderColor:[UIColor grayColor].CGColor];
[self.view addSubview:btn0];
[btn0 addTarget:self action:@selector(shuzi:) forControlEvents:UIControlEventTouchUpInside];
btndian = [[UIButton alloc]initWithFrame:CGRectMake(2*btn_width, rx.size.height-btn_height, btn_width, btn_height)];
[btndian setTitle:@"." forState:UIControlStateNormal];
btndian.backgroundColor = [UIColor colorWithRed:196/255.0 green:200 /255.0 blue:201/255.0 alpha:1];
btndian.font = [UIFont fontWithName:@"STHeitiJ-Light" size:50];
[btndian setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
btndian.layer.borderWidth = 0.6;
[btndian.layer setBorderColor:[UIColor grayColor].CGColor];
[self.view addSubview:btndian];
[btndian addTarget:self action:@selector(shuzi:) forControlEvents:UIControlEventTouchUpInside];
n = 0;
NSArray *array3=[NSArray arrayWithObjects:@"AC",@"+/-",@"%",nil];
for (int i=0; i<3; i++)
{
btn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame=CGRectMake(btn_width*i, rx.size.height-btn_height*5, btn_width, btn_height);
btn.backgroundColor = [UIColor colorWithRed:198/255.0 green:202 /255.0 blue:203/255.0 alpha:1];
btn.font = [UIFont fontWithName:@"STHeitiJ-Light" size:30];
[btn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
btn.layer.borderWidth = 0.6;
[btn.layer setBorderColor:[UIColor grayColor].CGColor];
[btn setTitle:[array3 objectAtIndex:n++] forState:UIControlStateNormal]; //注意：[array objectAtIndex:n++]
[self.view addSubview:btn];
[btn addTarget:self action:@selector(qita:) forControlEvents:UIControlEventTouchUpInside];
}
}
- (void)qita:(id)sender{
if([[sender currentTitle] isEqualToString:@"AC"]){
what = -1;
[label setText:@""];
}
if([[sender currentTitle] isEqualToString:@"%"]){
if(what == -1){
self.num1 = self.num1/100;
[label setText:[NSString stringWithFormat:@"%.2f",self.num1]];
}
else if(what>0 && what<=4){
self.num2 = self.num2/100;
[label setText:[NSString stringWithFormat:@"%.2f",self.num2]];
}else if(what == 5){
self.num1 = self.num2/100;
[label setText:[NSString stringWithFormat:@"%.2f",self.num1]];
what = -1;
}
}
if([[sender currentTitle] isEqualToString:@"+/-"]){
self.string = [[NSString alloc]init];
if([[label text] rangeOfString:@"-"].location!=NSNotFound){
self.string = [[label text] substringFromIndex:1];
[label setText:self.string];
}
else{
self.string = [@"-" stringByAppendingString:[label text]];
[label setText:self.string];
}
if(what == -1){
self.num1=[label.text doubleValue]; //保存输入的数值
NSLog(@"self.num1 is %f",self.num1);
}
else if(what >0 && what<=4){
self.num2=[label.text doubleValue]; //保存输入的数值
NSLog(@"self.num2 is %f",self.num2);
}
}
}
- (void)cacula:(id)sender{
double answer = 0;
if([[sender currentTitle] isEqualToString: @"+"]){
if(what == 5){
self.num1 = self.num2;
}
what = 1;
[label setText:@""];
}
if([[sender currentTitle] isEqualToString: @"-"]){
if(what == 5){
self.num1 = self.num2;
}
what = 2;
[label setText:@""];
}
if([[sender currentTitle] isEqualToString: @"*"]){
if(what == 5){
self.num1 = self.num2;
}
what = 3;
[label setText:@""];
}
if([[sender currentTitle] isEqualToString: @"/"]){
if(what == 5){
self.num1 = self.num2;
}
what = 4;
[label setText:@""];
}
if([[sender currentTitle] isEqualToString: @"="]){
if(what == 1){
answer = self.num1+self.num2;
}
else if(what == 2){
answer = self.num1-self.num2;
}
else if(what == 3){
answer = self.num1*self.num2;
}
else if(what == 4){
answer = self.num1/self.num2;
}else {
answer = self.num1;
}
[label setText:[NSString stringWithFormat:@"%.2f",answer]];
self.num2 = answer;
what = 5;
}
}
//0-9方法
- (void)shuzi:(id)sender
{
if(what==5){
[label setText:@""];
what = -1;
}
self.string = [[NSString alloc]init];
self.string = [[label text] stringByAppendingString:[sender currentTitle]];
[label setText:self.string];
if(what == -1){
self.num1=[label.text doubleValue]; //保存输入的数值
NSLog(@"self.num1 is %f",self.num1);
}
else if(what >0 && what<=4){
self.num2=[label.text doubleValue]; //保存输入的数值
NSLog(@"self.num2 is %f",self.num2);
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end