SharedPreference放在data/data/包名/下面。
是占用内存得，如果保存大量的数据，需要放到sdcard下去，所以SharedPreferences不方便，直接用Properties类的方式比较好。
可以把文件当作字符串传入，能访问获取正确值就好！
package com.nil.cache;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Properties;public class PropertiesConfig extends Properties { String propertyPath=""; private PropertiesConfig(String path) { propertyPath=path; }; public static PropertiesConfig getInstance(String path) { { File file = new File(path); if (file.exists()) { try { file.createNewFile(); } catch (IOException e) { e.printStackTrace(); } } PropertiesConfig pro = new PropertiesConfig(path); try { InputStream is = new FileInputStream(file); pro.load(is); is.close(); } catch (Exception e) { e.printStackTrace(); } return pro; } } @Override public Object setProperty(String key, String value) { super.setProperty(key, value); try { this.store(new FileOutputStream(this.propertyPath), "utf-8"); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return value; } public Object put(String key, String value) { super.put(key, value); try { this.store(new FileOutputStream(this.propertyPath), "utf-8"); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return value; }}嘿嘿！怎么用呢？
大概如下调用即可：
PropertiesConfig.getInstance("/sdcard/client_config.xml").setProperty("187", "name"); PropertiesConfig.getInstance("/sdcard/client_config.xml").get("187");