simple calculator in android source code

;} // declare the variable calculation result $ sum =" "; if ($ isDo) {// determine whether two operators are numbers. if they are not numbers, do not switch ($ _ POST ['ysf ']) {case' + ': $ sum = $ _ POST ['num1'] + $ _ POST ['num2']; break; case '-': $ sum = $ _ POST ['num1']-$ _ POST ['num2']; break; case '*': $ sum = $ _ POST ['num1'] * $ _ POST ['num2']; break; case '/': $ sum = $ _ POST ['num1']/$ _ POST ['num2']; break; case '% ': $ sum = $ _ POST ['num1'] % $ _ POST ['num2']; break;} ec

Hello everyone, today put a day off, bored I simply knocked the source code of the calculator, found that the previous things are almost forgotten, so while still a little memory, first try to knock back the feeling of the previous ....Well, don't say much, first look at the original code:First create a main class:public class test{public static void Main (string

Reprint Please specify source: http://blog.csdn.net/qq_32059827/article/details/51707931From today onwards, this column continues to update the Android Simple Combat blog post. Unlike previous columns, this column has only instances. Each instance as far as possible according to the knowledge points corresponding to the content of the corresponding chapter to wri

Do a simple calculator, can only achieve a simple arithmetic.Activity_main.xml:Mainactivity.java:Package Com.example.calculator;import Android. R.integer;import android.app.activity;import android.os.bundle;import Android.util.log;import android.view.Menu; Import Android.view.menuitem;import Android.view.view;import An

This article describes the implementation of the Android student management system, sharing for everyone to reference. Specifically as follows: (1) The functions of the management system are as follows: Students, teachers registration, and elective courses, as well as the revision of students ' performance and other basic simple functions, the most important thing is to achieve some dialog use.The interfac

This example is a calculator implementation example based on the Android GOOGL SDK book:1 Create three TextView objects, two EditText objects, four button objectsMain.xml forAndroid:id= "@+id/widget0"Android:layout_width= "Fill_parent"android:layout_height= "Fill_parent"Xmlns:android= "Http://schemas.android.com/apk/res/android">android:layout_height= "Wrap_conte

Android Simple file Browser source code (GO)Activity_main. xmlFileimageandtext.xmlActivity_main.javaPackage Com.android.xiong.sdfilelook;import Java.io.file;import Java.util.arraylist;import java.util.HashMap; Import Java.util.list;import java.util.map;import Android.app.activity;import Android.os.bundle;import Android

Simple read of the LruCache source code in the android. support. v4 package, androidlrucache Package android. util; import java. util. linkedHashMap; import java. util. map;/*** A cache that holds strong references to a limited number of values. each time * a value is access

(); logo_iv.setImageBitmap(targetBitmap); Set a background picture Bitmap bg = BitmapFactory.decodeResource(getResources(), R.mipmap.bg); ImageView logo_iv = (ImageView) findViewById(R.id.bg_iv); Bitmap targetBitmap = QRCodeStyle.Builder.builder() .setQr(BitmapFactory.decodeResource(getResources(), R.mipmap.qr)) .setBg(bg) .build().get(); logo_iv.setImageBitmap(targetBitmap); All examples are

; Import Android.net.wifi.WifiManager; Import Android.net.wifi.wifimanager.wifilock;public class Wifimanageclass {private Wifimanager wifimanager;//Declaration Admin Object P Rivate wifiinfo wifiinfo;//wifi information private list Of course, in the operation of WiFi also need the appropriate permissions, personally feel this is the use of the most permissions, of course, the operation of WiFi can not be carried out in the simulator, must be placed on the real computer with WiFi, there are no

Preface It took some time to help a friend develop a calculator, which may be useful in the future. StatementWelcome to repost, but please keep the original source of the article :) blog Park: http://www.cnblogs.com farmer UNCLE: http://over140.cnblogs.com Body Private TextView mNumberText; /** Format data */ Private static final DecimalFormat mFormat = new DecimalFormat ( "###############.######"); /**

(Edittext.gettext (). toString ()));//Save the value of the display area and calculate}Save the operator you clicked onLastcommand = Inputcommand;Clearflag = true;//Because I've already entered the operator here,}}}Method of calculationprivate void Calculate (Double x) {if (lastcommand.equals ("+")) {result + = x;} else if (Lastcommand.equals ("-")) {Result-= x;} else if (Lastcommand.equals ("*")) {Result *= x;} else if (Lastcommand.equals ("/")) {Result/= x;} else if (lastcommand.equals ("="))

Php Learning simple calculator implementation code. For more information, see. Php Learning simple calculator implementation code. For more information, see. The Code is as follows

This calculator is composed of two parts: an MXML file on the front-end interface and an AS file of the background controller. The mxml file displays the calculator interface, and the as file processes the information sent by the user and calculates the result. In this tutorial, we will mainly learn: [List] The Application class The Panel container The Label element The Grid container The Button element [/l

PHP calculator (Factory mode) php code abstract class Calculator { private $number1; private $number2; public $result;/** * @return the $number2 */public function getNumber2() {return $this->number2;}/** * @param field_type $number2 */public function setNumber2($number2) {$this->number2 = $number2;}/** * @return the $number1 */public

Algorithm used: expression evaluation (infix expression to suffix expression, suffix expression evaluation value)Not how to design the interface, there is time to beautify!Mainactivity.javaPackage Com.example.calculator;import Java.util.hashmap;import Java.util.linkedlist;import java.util.List;import Java.util.map;import Android.app.activity;import Android.os.bundle;import Android.view.menu;import Android.view.view;import Android.widget.button;import Android.widget.textview;import Android.widget