上海出租车价格计算器

每次查到路线后都想知道打车多少钱，就写了个小小apk，方便些。就是知道从哪到哪多少公里，想知道打车要多少钱。

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.taxipricecaculator"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="14"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.taxipricecaculator.TaxtPriceCaculator"            android:label="@string/app_name"            android:screenOrientation="portrait" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

主类：TaxtPriceCaculator.java

package com.example.taxipricecaculator;import android.os.Bundle;import android.app.Activity;import android.text.Editable;import android.text.TextWatcher;import android.text.method.ScrollingMovementMethod;import android.view.Menu;import android.widget.Button;import android.widget.CompoundButton;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.EditText;import android.widget.Switch;import android.widget.TextView;public class TaxtPriceCaculator extends Activity {private final int BASE_MILES = 3;private final int BASE_MILES_LONG = 10;private final int BASE_PRICE = 14;private static final float PRICE_PER = (float) 2.4;private static final float PRICE_PER_EXTRA = (float) 3.6;private final int BASE_PRICE_NIGHT = 18;private static final float PRICE_PER_NIGHT = (float) 3.1;private static final float PRICE_PER_EXTRA_NIGHT = (float) 4.7;private EditText mMilesInput;private Button mDisplayPrice;private Switch mAddFeeMode;private TextView mIntroduction;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_taxt_price_caculator);findViewById();addListener();init();}private void init() {mIntroduction.setMovementMethod(ScrollingMovementMethod.getInstance());}private void findViewById() {mMilesInput = (EditText) this.findViewById(R.id.mileage_input);mDisplayPrice = (Button) this.findViewById(R.id.price_display);mAddFeeMode = (Switch) this.findViewById(R.id.switch_day_night_modes);mIntroduction = (TextView) this.findViewById(R.id.info);}private void addListener() {// TODO Auto-generated method stubmMilesInput.addTextChangedListener(new TextWatcher(){@Overridepublic void afterTextChanged(Editable s) {// TODO Auto-generated method stubfloat miles = 0;try {miles = Float.parseFloat(s.toString().trim());} catch (NumberFormatException e) {// TODO Auto-generated catch blocke.printStackTrace();}mDisplayPrice.setText(CaculateFee(miles, mAddFeeMode.isChecked()) + "");}@Overridepublic void beforeTextChanged(CharSequence s, int start, int count,int after) {// TODO Auto-generated method stub}@Overridepublic void onTextChanged(CharSequence s, int start, int before,int count) {// TODO Auto-generated method stub}});mAddFeeMode.setOnCheckedChangeListener(new OnCheckedChangeListener(){@Overridepublic void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {int miles = 0;try {miles = Integer.parseInt(mMilesInput.getText().toString().trim());} catch (NumberFormatException e) {// TODO Auto-generated catch blocke.printStackTrace();}mDisplayPrice.setText(CaculateFee(miles, mAddFeeMode.isChecked()) + "");}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.taxt_price_caculator, menu);return true;}private float CaculateFee(float miles, boolean night_mode){if(!night_mode){if(miles < BASE_MILES){return BASE_PRICE;}else if (miles > BASE_MILES && miles <= BASE_MILES_LONG){return (BASE_PRICE + (miles - BASE_MILES) * PRICE_PER);}else if(miles > BASE_MILES_LONG){return (float) (BASE_PRICE + (BASE_MILES_LONG - BASE_MILES) * PRICE_PER + (miles - BASE_MILES_LONG) * PRICE_PER_EXTRA);}}else{if(miles <= BASE_MILES){return BASE_PRICE_NIGHT;}else if (miles > BASE_MILES && miles <= BASE_MILES_LONG){return (BASE_PRICE_NIGHT + (miles - BASE_MILES) * PRICE_PER_NIGHT);}else if(miles > BASE_MILES_LONG){return (float) (BASE_PRICE_NIGHT + (BASE_MILES_LONG - BASE_MILES) * PRICE_PER_NIGHT + (miles - BASE_MILES_LONG) * PRICE_PER_EXTRA_NIGHT);}}return -1;}}

layout文件activity_taxt_price_caculator.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".TaxtPriceCaculator" >    <LinearLayout        android:id="@+id/group_mileage"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal" >        <TextView        android:id="@+id/mileage"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/label_mileage" />    <EditText        android:id="@+id/mileage_input"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:inputType="number"        android:ems="6"         android:singleLine="true"/>    <TextView        android:id="@+id/mileage_unit"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/label_mileage_unit" />    </LinearLayout>    <LinearLayout        android:id="@+id/group_price"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:layout_below="@+id/group_mileage" >         <TextView        android:id="@+id/price"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/label_price" />    <Button        android:id="@+id/price_display"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:ems="6" />    <TextView        android:id="@+id/price_unit"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/label_price_unit" />    </LinearLayout><Switch    android:id="@+id/switch_day_night_modes"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_alignParentRight="true"    android:layout_below="@+id/group_price"    android:text="@string/night_mode"    android:layout_marginBottom="20dip" /><TextView        android:id="@+id/info_title"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/intrduction_title"        android:layout_below="@+id/switch_day_night_modes"/><TextView        android:id="@+id/info"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/intrduction"        android:layout_below="@+id/info_title"        android:maxLines="10"        android:scrollbars="vertical"/></RelativeLayout>

资源文件：strings.xml

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">TaxiPriceCaculator2</string>    <string name="action_settings">Settings</string>    <string name="hello_world">Hello</string>    <string name="label_mileage">"Miles:"</string><string name="label_mileage_unit">Km</string><string name="label_price">"Price:"</string><string name="label_price_unit">RMB</string><string name="night_mode">"During 23:00–05:00"</string><string name="intrduction_title">"上海出租车价格计算方法："</string><string name="intrduction">"一般状况：车价=起步价【14元】+(里程数 - 起步里程数【3公里】)*每公里单价【2.4元】 (里程数大于3小于10) \n 车价=起步价【14元】 (里程数小于3) \n远程状况：车价=起步价【14元】+(远程里程标准【10公里】 - 起步里程数【3公里】)*每公里单价 + (里程数 - 远程里程标准【10】) *远程每公里单价【3.6元】 (里程数大于10)\n提醒：在5:00---23:00期间，起步费14元(包括一元的燃油费)，可运营3公里，超过3公里后每公里2.40元，总里程超过10公里后超过部分按每公里3.60元计算。 \n在23:00---到次日5:00期间，起步费18元(包括一元的燃油费)，可运营3公里，超过3公里后每公里3.10元，总里程超过10公里后超过部分按每公里4.70元计算。"</string></resources>