SharedPreferences工具類

import java.util.Map;
import java.util.Set;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
/**

SharedPreferences工具類
@author zouyb
/
public class SharedPreferencesUtil {
private SharedPreferences sp;
 private Editor editor;
 private String name = "mosjoy_chat";
 private int mode = Context.MODE_PRIVATE;
public SharedPreferencesUtil(Context context) {

 this.sp = context.getSharedPreferences(name, mode);
 this.editor = sp.edit();

}
/**

創建一個工具類，默認打開名字為name的SharedPreferences實例
@param context
@param name   唯一標識
@param mode   權限標識
*/
public SharedPreferencesUtil(Context context, String name, int mode) {
 this.sp = context.getSharedPreferences(name, mode);
 this.editor = sp.edit();
}
/**

添加信息到SharedPreferences
*
@param name
@param map
@throws Exception
*/
public void add(Map<String, String> map) {
 Set<String> set = map.keySet();
 for (String key : set) {

 editor.putString(key, map.get(key));

}
 editor.commit();
}
/**

刪除信息
*
@throws Exception
*/
public void deleteAll() throws Exception {
 editor.clear();
 editor.commit();
}
/**

刪除一條信息
*/
public void delete(String key){
 editor.remove(key);
 editor.commit();
}
/**

獲取信息
*
@param key
@return
@throws Exception
*/
public String get(String key){
 if (sp != null) {

 return sp.getString(key, "");

}
 return "";
}
/**

獲取此SharedPreferences的Editor實例
@return
*/
public Editor getEditor() {
 return editor;
}
}</pre>