锐客网

  1. 首页 > 睿知 > >

安卓计算器源代码，Android新手入门求一个计算器的源代码不要太复杂的就好

睿知经验分享

1，Android新手入门求一个计算器的源代码不要太复杂的就好你好！1仅代表个人观点，不喜勿喷，谢谢 。【安卓计算器源代码，Android新手入门求一个计算器的源代码不要太复杂的就好】
2，android计算器代码打下log ， setText前打出str3的值，以及str1 str2 result
3 ， 求一个android计算器源码http://www.eoeandroid.com/forum.php?mod=viewthread&tid=172954http://www.eoeandroid.com/forum.php?mod=viewthread&tid=172954
4，求大神发一个安卓简单的计算机源代码只加减乘除就可以package wanwa;import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Calculator extends JFrame {private Container container;private GridBagLayout layout;private GridBagConstraints constraints;private JTextField displayField; private String lastCommand; private double result; private boolean start; public Calculator() {super("计算器");container = getContentPane();layout = new GridBagLayout();container.setLayout(layout);constraints = new GridBagConstraints();start = true;result = 0;lastCommand = "=";displayField = new JTextField(20);displayField.setHorizontalAlignment(JTextField.RIGHT);constraints.gridx = 0;constraints.gridy = 0;constraints.gridwidth = 4;constraints.gridheight = 1;constraints.fill = GridBagConstraints.BOTH;constraints.weightx = 100;constraints.weighty = 100;layout.setConstraints(displayField, constraints);container.add(displayField);ActionListener insert = new InsertAction();ActionListener command = new CommandAction();addButton("Backspace", 0, 1, 2, 1, insert);addButton("CE", 2, 1, 1, 1, insert);addButton("C", 3, 1, 1, 1, insert);addButton("7", 0, 2, 1, 1, insert);addButton("8", 1, 2, 1, 1, insert);addButton("9", 2, 2, 1, 1, insert);addButton("/", 3, 2, 1, 1, command);addButton("4", 0, 3, 1, 1, insert);addButton("5", 1, 3, 1, 1, insert);addButton("6", 2, 3, 1, 1, insert);addButton("*", 3, 3, 1, 1, command);addButton("1", 0, 4, 1, 1, insert);addButton("2", 1, 4, 1, 1, insert);addButton("3", 2, 4, 1, 1, insert);addButton("-", 3, 4, 1, 1, command);addButton("0", 0, 5, 1, 1, insert);addButton(".", 2, 5, 1, 1, insert);addButton("+", 3, 5, 1, 1, command);addButton("=", 1, 5, 1, 1, command);this.setResizable(true);setSize(180, 200);setVisible(true);}private void addButton(String label, int row, int column, int with,int height, ActionListener listener) {JButton button = new JButton(label);constraints.gridx = row;constraints.gridy = column;constraints.gridwidth = with;constraints.gridheight = height;constraints.fill = GridBagConstraints.BOTH;button.addActionListener(listener);layout.setConstraints(button, constraints);container.add(button);}private class InsertAction implements ActionListener {public void actionPerformed(ActionEvent event) {String input = event.getActionCommand();if (start) {displayField.setText("");start = false;if (input.equals("+/-"))displayField.setText(displayField.getText() + "-");}if (!input.equals("+/-")) {if (input.equals("Backspace")) {String str = displayField.getText();if (str.length() > 0)displayField.setText(str.substring(0, str.length() - 1));}else if (input.equals("CE") || input.equals("C")) {displayField.setText("0");start = true;} elsedisplayField.setText(displayField.getText() + input);}}}private class CommandAction implements ActionListener {public void actionPerformed(ActionEvent evt) {String command = evt.getActionCommand();if (start) {lastCommand = command;}else {calculate(Double.parseDouble(displayField.getText()));lastCommand = command;start = true;}}}public 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("="))result = x;displayField.setText("" + result);}public static void main(String[] args) {Calculator calculator = new Calculator();calculator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}}

    推荐阅读


    上一篇：ios光遇，光遇苹果id怎么登陆

    下一篇：ios自动点击器教程，用什么软件可以让苹果手机自动操作点击某一个软件