calculator widgets for android

thought it was an excuse for my laziness ~ Let's get down to the truth... Let's start with an interface .. I have to admit that it is really ugly .. I am ashamed to be a girl .. First, the layout was determined. The calculator naturally thought of the layout of the table. But I always thought that the layout of the table must be standard for each column in each row. If there is a small number of rows, it will only be displayed on the left, for exam

 Introduction to Android GridLayout, Calculator for exampleAndroid GridLayout Default horizontal layout element from left to right. You can control whether the orientation of the child element layout is horizontal or vertical by setting the property: Android:orientation=.The GridLayout properties Android:layout_row and Android:layout_column set constant values to specify the number of rows that the GridLa

/number2 + ""); fuhao. settext ("/") ;}}}}@ overridepublic Boolean oncreateoptionsmenu (menu) {super. oncreateoptionsmenu (menu); // create a menu, set the icon, and use the icon provided by the system, menu. add (0, R. id. about, 0, "about "). seticon (Android. r. drawable. ic_dialog_info); menu. add (0, R. id. quit, 1, "quit "). seticon (Android. r. drawable. ic_lock_power_off); menu. finditem (R. id. qui

Android-CheckBox implementation calculator, androidcheckbox Source code: http://download.csdn.net/detail/wu20093346/7718055 Use the OnCheckedChangeListener of the CheckBox to trigger the event ,: list=new OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { // TODO Auto-generated method stub if(mBox1.isChecked()) { mBox1.setChecked(false); } if(mBox2.isChecked())

"android:layout_height= "Fill_parent"android:onclick= "Onclicklistener"android:text= "@string/negsign"/gt; Android:id= "@+id/buttonplus"Android:layout_width= "0DP"android:layout_height= "Fill_parent"android:layout_weight= "1"android:onclick= "Onclicklistener"android:text= "@string/plus"/> android:layout_width= "0DP" android:layout_height= "Fill_parent" android:layout_weight= "1" android:orientation= "Vertical" android:id= "@+id/buttonminus" android:layout_width= "Fill _pare

Lab questions: Complete a simple computer function in the android simulator. Purpose: Learn how to use common android controls such as text boxes and buttons. Step 1: Create a project Select the SDK version. For example, select 2.3.3. So far, the project has been created. The android project has created a main. XML interface by default. Double-click to

In fact, this Android computer, all the backstage ideas and "C # calculator Code" is exactly the same. The Win form program is ported to Android, from C # to Java in fact, because the basic syntax is very similar, the only difficulty is the Android XML layout part, unlike C # forms can be directly dragged.Or a

Lab questions:Complete a simple computer function in the Android simulator.Purpose:Learn how to use common Android controls such as text boxes and buttons.Step 1: Create a projectSelect the SDK version. For example, select 2.3.3.So far, the project has been created.The Android project has created a main. xml interface by default.Double-click to open the interface

The Android 4.4.4 Calculator Calculator is ported and can be used independently in Android studio. The complete code has been pushed to my GitHub, linked at the end of the article.Here's a look at:This is the effect on the Samsung phone, and the same as the calculator UI I u

Learn about Android for a while and now start working on a small example-calculator. I believe we have calculators in our phones, but do you know how it's done? In fact, I still do not know, now on the simple layout to do a small summary.For a software , a nice user interface (UI) can always impress users, which is what we should be thinking after the interface design lesson. For mobile applications such

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 Android.view.view.onclicklistener;import Android.widget.button;import Android.widget.edittex

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 calculator interface Layout Android calculator interface: The defined XML layout file mainly uses TableLayout:

;Android:id= "@+id/button_yi"Android:layout_width= "80DP"android:layout_height= "70DP"android:text= "@string/yi"Android:textsize= "30sp"/>Android:id= "@+id/button_er"Android:layout_width= "80DP"android:layout_height= "70DP"android:text= "@string/er"Android:textsize= "30sp"/>Android:id= "@+id/button_san"Android:layout_width= "80DP"android:layout_height= "70DP"android:text= "@string/san"Android:textsize= "30sp"/>Android:id= "@+id/button_dian"Android:layout_width= "80DP"android:layout_height= "70DP

| | str.equals (")") return; if (!str.contains ("+") !str.contains ("-") !str.contains ("X") !str.contains ("+")) re Turn Traverse computed result double result = 0; Char a =str.charat (Str.length ()-2); if (A = = ' + ' | | a = = '-') {str = str + ' 0 '; } else if (a = = ' X ' | | a = = ' ÷ ') {str = str + ' 1 '; } int i = 0; int start = 0; char temp = '; int flag = 1; if (!str.contains ("+") !str.contains ("-")) {result + =

;} // 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

Android Studio 2.3.2. Reference article: http://blog.csdn.net/like_program/article/details/518136321. New Project Mycalculator, all the way next, the default values are used.2. Modify the contents of the three XML files as required. Many local engineering names are different and changed to their own names.3. Follow the steps to modify the Activity_main. XML file, encountered a problem:Android:singleline= "false" obsoleteTemporary handling: Delete this

) {Super. OnCreate (savedinstancestate); Setcontentview (R.layout.activity_result); TextView Tv_name=(TextView) Findviewbyid (r.id.tv_name); TextView Tv_sex=(TextView) Findviewbyid (r.id.tv_sex); TextView Tv_result=(TextView) Findviewbyid (R.id.tv_result); Intent Intent=getintent (); String name= Intent.getstringextra ("name"); byte[] bytes =name.getbytes (); intSex = Intent.getintextra ("Sex", 0); Tv_name.settext (name); Switch(Sex) { Case1: Tv_sex.settext (Male); Try{bytes= Name.

Introduction: After learning several android layout methods, we made an android calculator. I searched the internet for this information and found that there was a problem with the layout, not full of the screen, but only accounted for a part. The instructor's suggestion is: Setting the font size is the key. However, after I fixed the font size problem and sol

After about four nights of study, finally made a small thing, from the small white slowly learned something:1. Nesting use of layoutsUse of 2.EditText, button, and other attributes3. Need to declare before use, and then instantiate, the button needs to set the Click event4. Use the OnClick function to set the function of the click button5. Internationalization to put the kanji into the string.xml, from which to callLayout Code main functionSet the background color add android:theme= "@