Pure Code Implementation Simple Calculator interface

//

Viewcontroller.m

01-calculate

//

Created by Wang on 16/4/9.

COPYRIGHT©2016 King of the year. All rights reserved.

//

#import "ViewController.h"

@interface Viewcontroller ()

Setting global variables is used when the following calculation method is implemented

@property (nonatomic,weak) Uitextfield *num1text;

@property (nonatomic,weak) Uitextfield *num2text;

@property (nonatomic,weak) UILabel *num3label;

@end

@implementation Viewcontroller

The view is automatically executed after it is loaded

-(void) Viewdidload {

[Super Viewdidload];

[Self setupui];

Additional setup after loading the view, typically from a nib.

}

#pragma mark-the dividing line

Setup interface

-(void) setupui{

text box

Uitextfield *mytext1 = [[Uitextfield alloc]init];

Uitextfield *mytext2 = [[Uitextfield alloc]init];

Change the background color of the text box

Mytext1.backgroundcolor = [Uicolor Redcolor];

Mytext2.backgroundcolor = [Uicolor Greencolor];

The following can also be achieved, more cumbersome

CGRect rect = mytext1.frame;

rect.origin.x = 10;

RECT.ORIGIN.Y = 20;

Rect.size.height = 20;

Rect.size.width = 40;

Mytext.frame = rect;

Set the size of the text box

Mytext1.frame = CGRectMake (10, 20, 50, 20);

Mytext2.frame = CGRectMake (90, 20, 50, 20);

Set up a Text1-compatible keypad

Mytext1.keyboardtype=uikeyboardtypenumberpad;

Add to Root view

[Self.view Addsubview:mytext1];

[Self.view ADDSUBVIEW:MYTEXT2];

Assign value

_num1text = MyText1;

_num2text = myText2;

Create a label

UILabel *mylabel1 = [[UILabel alloc]init];

UILabel *mylabel2 = [[UILabel alloc]init];

UILabel *mylabel3 = [[UILabel alloc]init];

Change the size of a label

Mylabel1.frame = CGRectMake (70, 20, 7, 10);

Mylabel2.frame = CGRectMake (150, 20, 7, 10);

Mylabel3.frame = CGRectMake (165, 20, 7, 10);

Change the text content of a label

Mylabel1.text = @ "+";

Mylabel2.text = @ "=";

Mylabel3.text = @ "0";

Automatically resizes the label based on content

[MyLabel1 SizeToFit];

[MyLabel2 SizeToFit];

[MyLabel3 SizeToFit];

Add to Root view

[Self.view Addsubview:mylabel1];

[Self.view Addsubview:mylabel2];

[Self.view Addsubview:mylabel3];

assigning to global variables

_num3label = MyLabel3;

Botton button

UIButton *mybotton = [[UIButton alloc]initwithframe:cgrectmake (20, 40, 30, 30)];

Add a calculation Word to the button

[Mybotton settitle:@ "calculation" forstate:uicontrolstatenormal];

Color of the default state "calculation"

[Mybotton Settitlecolor:[uicolor Redcolor] forstate:uicontrolstatehighlighted];

Color of the "calculated" highlight state

[Mybotton Settitlecolor:[uicolor Bluecolor] forstate:uicontrolstatenormal];

Automatically resize the button

[Mybotton SizeToFit];

Add to Root view

[Self.view Addsubview:mybotton];

Implement Click events

[Mybotton addtarget:self Action: @selector (calculate) forcontrolevents:uicontroleventtouchupinside];

}

Calculation method implementation

-(void) calculate{

Nsinteger num1 = _num1text.text.intvalue;

Nsinteger num2 = _num2text.text.intvalue;

Results

Nsinteger result = num1+num2;

Float type result converted to String type

_num3label.text = @ (result). Description;

AutoFit Result Box size

[_num3label SizeToFit];

}

@end

Pure Code Implementation Simple Calculator interface