Android 单例模式与SharedPreferences一起使用

标签：android   实例   

百度上很多关于单例模式的解释，例如懒汉模式，饿汉模式等等之类，也有说单例模式与SharedPreferences一起使用，因为SharedPreferences暂不支持多线程访问。可以查看我这篇文章Android sharedpreferences轻量级存储 中介绍SharedPreferences。

下面贴代码看看单例模式与SharedPreferences一起使用。

import android.content.Context;
import android.content.ContextWrapper;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;

public class ProgramConfigManage {
	// 单例模式类对象
	private ContextWrapper mWrapper = null;
	private static ProgramConfigManage m_ProgramConfig = null;
	private SharedPreferences mPreferences = null;

	// 将配置参数定义为成员全局变量
	private String mstrNetworkIP;
	private int mnNetworkPort;
	private String mstrNetworkUserName; 
	private String mstrNetworkPassword; 
	private String mstrNetworkUpdate; 

	// 单例模式获取实例
	public static ProgramConfigManage GetInstance(Context base) {
		if (m_ProgramConfig == null) {
			m_ProgramConfig = new ProgramConfigManage(base);

			// 为了提高速度，在这 里读取配置
			m_ProgramConfig.mstrNetworkIP = m_ProgramConfig.mPreferences
					.getString("Config_NetworkIP", "");
			m_ProgramConfig.mnNetworkPort = m_ProgramConfig.mPreferences
					.getInt("Config_NetworkPort", 0);
			m_ProgramConfig.mstrNetworkUserName = m_ProgramConfig.mPreferences
					.getString("Config_NetworkUserName", "");
			m_ProgramConfig.mstrNetworkPassword = m_ProgramConfig.mPreferences
					.getString("Config_NetworkPassword", "");
			m_ProgramConfig.mstrNetworkUpdate = m_ProgramConfig.mPreferences
					.getString("Config_NetworkUpdate", "");
		}

		return m_ProgramConfig;
	}

	// 配置getSharedPreferences
	public ProgramConfigManage(Context base) {
		// super(base);
		mWrapper = new ContextWrapper(base);
		mPreferences = mWrapper.getSharedPreferences("Perference",
				ContextWrapper.MODE_PRIVATE);

	}

	// 设置
	public void setNetworkState(String strNetworkIP, int nNetworkPort,
			String strNetworkUserName, String strNetworkPassword) {
		Editor editor = mPreferences.edit();
		editor.putString("Config_NetworkIP", strNetworkIP);
		editor.putInt("Config_NetworkPort", nNetworkPort);
		editor.putString("Config_NetworkUserName", strNetworkUserName);
		editor.putString("Config_NetworkPassword", strNetworkPassword);
		editor.commit();

		mstrNetworkIP = strNetworkIP;
		mnNetworkPort = nNetworkPort;
		mstrNetworkUserName = strNetworkUserName;
		mstrNetworkPassword = strNetworkPassword;

	}
	
	//设置
	public void setNetworkUpdateMessage(String strUpdate) {
			Editor editor = mPreferences.edit();
			editor.putString("Config_NetworkUpdate", strUpdate);
			editor.commit();
			mstrNetworkUpdate=strUpdate;
	}

	public String getNetworkIP() {
		return mstrNetworkIP;
	}

	public int getNetworkPort() {
		return mnNetworkPort;
	}

	public String getNetworkUserName() {
		return mstrNetworkUserName;
	}
	public String getNetwordPassword() {
		return mstrNetworkPassword;
	}

	public String getNetworkUpdate() {
		return mstrNetworkUpdate;	
	}

}

欢迎大家交流更多的SharedPreferences以及单例模式的用法.

Android 单例模式与SharedPreferences一起使用

标签：android   实例   

原文地址：http://blog.csdn.net/qq_16064871/article/details/44817227