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安卓简单代码，求一段android简单三级联动的代码数据用数组装填就行

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1，求一段android简单三级联动的代码数据用数组装填就行给你个思路，具体实现就自己去做吧比如说最常见的省市县三联动省为第一联，数据用一维数组装 ， 一维数组的下标代表省市为第二联，数据用二维数组装 ， 二维数组的第一个下标代表省 ， 第二个下标代表市县为第三联，数据用三维数组装，三位数组的第一个下标代表?。?第二个下标代表市 ， 第三个下标代表县就是如此无脑，简单的多维数组虽然我很聪明，但这么说真的难到我了
2，求助一个简单的安卓源码那就设置输入框2的OnFocusChangeListener事件 ， 获取焦点后，就将输入框2.setText(输入框1的内容)那就设置输入框2的OnFocusChangeListener事件，获取焦点后，就将输入框2.setText(输入框1的内容)非常感谢 ?。。?那个…用手机怎样设置满意答案？？没看见在哪？能不能详细点 我是新手 谢谢非常感谢 ?。。?那个…用手机怎样设置满意答案？？没看见在哪？非常感谢 ?。。?那个…用手机怎样设置满意答案？？没看见在哪？
3，求一ANDROID源码找不到了 给你个思路自己写吧在layout里定义这个activity的view是一个edittext一个button一个textview然后在java文件里大概这么写 ， 细节你自己改改吧public class MainActivity extends Activityprivate textviewt;privtae edittexte;String reasult;t=(textview)findViewById(R.id.textview);e=(edittext)findViewById(R.id.edittext);@Overridepublic void onCreate(Bundle savedInstanceState)super.onCreate(savedInstanceState);setContentView(R.layout.main);b= (Button) findViewById(R.id.button);b.setOnClickListener(new Button.OnClickListener()public void onClick(View v)String reasult=t.gettext().toString;}});t.settext(reasult/3);}大概就是这样刚写的 可能有错误但整体就是这样~~~~有问题继续追问吧【安卓简单代码，求一段android简单三级联动的代码数据用数组装填就行】
4，求一简单ANDROID源码main.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><EditText android:id="@+id/edit" android:layout_width="200dp" android:layout_height="wrap_content"></EditText><Button android:id="@+id/bt" android:text="click" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button><TextView android:id="@+id/tv" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView></LinearLayout>test.java:package com.android.test;import java.text.DecimalFormat;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;public class test extends Activity/** Called when the activity is first created. */ TextView tv; Button bt; EditText edit; @Override public void onCreate(Bundle savedInstanceState)super.onCreate(savedInstanceState); setContentView(R.layout.main); tv = (TextView) findViewById(R.id.tv); bt = (Button) findViewById(R.id.bt); edit = (EditText) findViewById(R.id.edit); bt.setOnClickListener(new OnClickListener() public void onClick(View v)// TODO Auto-generated method stub String strEdit = edit.getText().toString(); float input = Float.parseFloat(strEdit); Float output = input / 3; DecimalFormat df = new DecimalFormat("0.##"); tv.setText(df.format(output)); }}); }}你试试哈5，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);}}

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