Design Mode of Android Application Development: appearance Mode

Next, let's learn the appearance mode.

Appearance mode: provides a unified interface to access a group of interfaces in the subsystem.
 
Create a car class
Package COM. jindegege. car; public class car {Public String start () {return "";} Public String check_stop () {return "";} Public String check_box () {return "Check tank";} Public String check_console () {return "Check dashboard ";}}
 
2. Create a new appearance class (this class provides a unified interface for accessing the car class interface method)
Package COM. jindegege. car. facade; import Java. util. arraylist; import Java. util. hashmap; import Java. util. list; import Java. util. map; import COM. jindegege. car. car; public class facade {public Map <string, string> car_do (car) {// unified interface method Map <string, string> DATA = new hashmap <string, string> ();/*** is used to access a group of interface methods in the subsystem **/string data1 = car. check_box (); string data2 = car. check_console (); string data3 = car. check_stop (); string data4 = car. start (); data. put ("data1", data1); data. put ("data2", data2); data. put ("data3", data3); data. put ("data4", data4); return data ;}}
3. Create an android client and provide XML and activity:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/textview01"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/hello" />    <TextView        android:id="@+id/textview02"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        />    <TextView        android:id="@+id/textview03"        android:layout_width="fill_parent"        android:layout_height="wrap_content"      />    <TextView        android:id="@+id/textview04"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        /></LinearLayout>

Main activity class:
package com.jindegege.facade;import java.util.Map;import com.jindegege.car.Car;import com.jindegege.car.facade.Facade;import android.app.Activity;import android.os.Bundle;import android.widget.TextView;public class FacadeActivity extends Activity { private TextView textview01; private TextView textview02; private TextView textview03; private TextView textview04; private Facade car_impl; private Map<String, String> data;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        textview01=(TextView)findViewById(R.id.textview01);        textview02=(TextView)findViewById(R.id.textview02);        textview03=(TextView)findViewById(R.id.textview03);        textview04=(TextView)findViewById(R.id.textview04);        car_impl=new Facade();        data=car_impl.car_do(new Car());        if(textview01!=null&&data.get("data1")!=null){        textview01.setText(data.get("data1").toString());        }        if(textview02!=null&&data.get("data2")!=null){        textview02.setText(data.get("data2").toString());        }        if(textview03!=null&&data.get("data3")!=null){        textview03.setText(data.get("data3").toString());        }        if(textview04!=null&&data.get("data4")!=null){        textview04.setText(data.get("data4").toString());        }            }}

Let's take a look at the simple implementation effect:

Isn't it easy? encapsulate the sub-operation with a appearance interface, and then call this interface to call those very complex micro-operations.
 
Source code: http://download.csdn.net/detail/jindegegesun/4093597