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;
@Override
protected 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 stub
mMilesInput.addTextChangedListener(new TextWatcher(){
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
float miles = 0;
try {
miles = Float.parseFloat(s.toString().trim());
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mDisplayPrice.setText(CaculateFee(miles, mAddFeeMode.isChecked()) + "");
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
// TODO Auto-generated method stub
}
});
mAddFeeMode.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
int miles = 0;
try {
miles = Integer.parseInt(mMilesInput.getText().toString().trim());
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mDisplayPrice.setText(CaculateFee(miles, mAddFeeMode.isChecked()) + "");
}
});
}
@Override
public 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>