AppConfig.java

package net.oschina.gitapp;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Properties;

import net.oschina.gitapp.common.Contanst;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Environment;
import android.preference.PreferenceManager;

/**
 * 应用程序配置类：用于保存用户相关信息及设置
 * 
 * @author 火蚁 (http://my.oschina.net/LittleDY)
 * @version 1.0
 * @created 2014-04-21
 */
public class AppConfig {
	
	
	 	

	private final static String APP_CONFIG = "config";

	public final static String CONF_APP_UNIQUEID = "APP_UNIQUEID";
	
	public final static String CONF_LOAD_IMAGE = "perf_loadimage";
	
	public final static String CONF_HTTPS_LOGIN = "perf_httpslogin";
	
	public final static String CONF_RECEIVENOTICE = "perf_receivenotice";
	
	public final static String CONF_VOICE = "perf_voice";
	
	public final static String CONF_CHECKUP = "perf_checkup";
	
	public final static String CONF_FRIST_START = "isFristStart";
	
	//默认存放图片的路径
	public final static String DEFAULT_SAVE_IMAGE_PATH = Environment
			.getExternalStorageDirectory()
			+ File.separator
			+ "OSChina"
			+ File.separator
			+ "git"
			+ File.separator;
	
	//默认存放文件的路径
	public final static String DEFAULT_SAVE_FILE_PATH = Environment
			.getExternalStorageDirectory()
			+ File.separator
			+ "OSChina"
			+ File.separator
			+ "git"
			+ File.separator
			+ "download"
			+ File.separator;

	private Context mContext;
	private static AppConfig appConfig;

	public static AppConfig getAppConfig(Context context) {
		if (appConfig == null) {
			appConfig = new AppConfig();
			appConfig.mContext = context;
		}
		return appConfig;
	}

	/**
	 * 获取Preference设置
	 */
	public static SharedPreferences getSharedPreferences(Context context) {
		return PreferenceManager.getDefaultSharedPreferences(context);
	}

	/**
	 * 是否加载显示文章图片
	 */
	public static boolean isLoadImage(Context context) {
		return getSharedPreferences(context).getBoolean(CONF_LOAD_IMAGE, true);
	}

	/**
	 * 获得用户的token
	 * 
	 * @return
	 */
	public String getPrivateToken() {
		return get(Contanst.PROP_KEY_PRIVATE_TOKEN);
	}

	public String get(String key) {
		Properties props = get();
		return (props != null) ? props.getProperty(key) : null;
	}

	public Properties get() {
		FileInputStream fis = null;
		Properties props = new Properties();
		try {
			// 读取files目录下的config
			// fis = activity.openFileInput(APP_CONFIG);

			// 读取app_config目录下的config
			File dirConf = mContext.getDir(APP_CONFIG, Context.MODE_PRIVATE);
			fis = new FileInputStream(dirConf.getPath() + File.separator
					+ APP_CONFIG);

			props.load(fis);
		} catch (Exception e) {
		} finally {
			try {
				fis.close();
			} catch (Exception e) {
			}
		}
		return props;
	}

	private void setProps(Properties p) {
		FileOutputStream fos = null;
		try {
			// 把config建在files目录下
			// fos = activity.openFileOutput(APP_CONFIG, Context.MODE_PRIVATE);

			// 把config建在(自定义)app_config的目录下
			File dirConf = mContext.getDir(APP_CONFIG, Context.MODE_PRIVATE);
			File conf = new File(dirConf, APP_CONFIG);
			fos = new FileOutputStream(conf);

			p.store(fos, null);
			fos.flush();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				fos.close();
			} catch (Exception e) {
			}
		}
	}

	public void set(Properties ps) {
		Properties props = get();
		props.putAll(ps);
		setProps(props);
	}

	public void set(String key, String value) {
		Properties props = get();
		props.setProperty(key, value);
		setProps(props);
	}

	public void remove(String... key) {
		Properties props = get();
		for (String k : key)
			props.remove(k);
		setProps(props);
	}
}