实例教程五：采用SharedPreferences保存用户偏好设置参数

android水管工人游戏源码
http://www.eoeandroid.com/thread-207446-1-1.html

Android推箱子小游戏
http://www.eoeandroid.com/thread-207439-1-1.html

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http://www.eoeandroid.com/thread-207522-1-1.html

<?xml version="1.0" encoding="utf-8"?>     <resources>         <string name="hello">Hello World, MainActivity!</string>      <string name="app_name">软件参数设置</string>      <string name="name">姓名</string>      <string name="age">年龄</string>      <string name="save">保存参数</string>      <string name="success">保存完成</string>     </resources>

package cn.itcast.service;     import java.util.HashMap;  import java.util.Map;  import android.content.Context;   import android.content.SharedPreferences;   import android.content.SharedPreferences.Editor;       public class PrefercesService {             private Context context;                  public PrefercesService(Context context){                   this.context = context;           }               /**            * 保存参数            * @param name 姓名           * @param age 年龄            */             public void save(String name, Integer age) {                     SharedPreferences perferences = context.getSharedPreferences("itcast", Context.MODE_PRIVATE);                   Editor editor = perferences.edit();                   editor.putString("name", name);                   editor.putInt("age", age);                   editor.commit();             }                     /**            * 获取各项配置参数            * @return            */             public Map<String, String> getPreferces(){                     Map<String, String> params = new HashMap<String, String>();                  SharedPreferences perferences = context.getSharedPreferences("itcast", Context.MODE_PRIVATE);                  params.put("name", perferences.getString("name", null));                  params.put("age", String.valueOf(perferences.getInt("age", 0)));                  return params;             }     }   

package cn.itcast.settings;       import java.util.Map;       import cn.itcast.service.PrefercesService;     import android.app.Activity;     import android.os.Bundle;     import android.view.View;     import android.widget.EditText;     import android.widget.Toast;       public class MainActivity extends Activity {         private EditText edtName;         private EditText edtAge;         private PrefercesService service;               @Override         public void onCreate(Bundle savedInstanceState) {             super.onCreate(savedInstanceState);             setContentView(R.layout.main);                          edtName = (EditText)this.findViewById(R.id.edtName);             edtAge = (EditText)this.findViewById(R.id.edtAge);                          service = new PrefercesService(this);                          Map<String, String> params = service.getPreferces();             edtName.setText(params.get("name"));             edtAge.setText(params.get("age"));         }               public void save(View v){                 String name = edtName.getText().toString();                 String age = edtAge.getText().toString();                                             service.save(name, Integer.valueOf(age));                          Toast.makeText(getApplicationContext(), R.string.success, 1).show();         }     }