workspace/TrainDelayed/src/com/td/utility/EditPrefUtil.java

   1 package com.td.utility;\r
   2 \r
   3 import java.util.HashMap;\r
   4 import java.util.Iterator;\r
   5 import java.util.Map;\r
   6 import java.util.Map.Entry;\r
   7 import java.util.Set;\r
   8 \r
   9 import android.content.Context;\r
  10 \r
  11 public class EditPrefUtil implements PrefUtil {\r
  12         private static final String DELM = "\t";\r
  13         private Map<String, String> hash = new HashMap<String, String>();\r
  14         private PrefUtil pref;\r
  15         \r
  16         public EditPrefUtil(Context context){\r
  17                 pref = new PrefUtilImpl(context);\r
  18         }\r
  19         \r
  20         public void put(String key, String value) {\r
  21                 hash.put(key, value);\r
  22         }\r
  23 \r
  24         public void put(String key, int value) {\r
  25                 hash.put(key, String.valueOf(value));\r
  26         }\r
  27 \r
  28         public String get(String key) {\r
  29                 String value = hash.get(key);\r
  30                 if (value != null){\r
  31                         return value;\r
  32                 }\r
  33                 value = pref.get(key);\r
  34                 \r
  35                 return value;\r
  36         }\r
  37 \r
  38         public int getInt(String key) {\r
  39                 return Integer.parseInt(get(key));\r
  40         }\r
  41 \r
  42         public String get(String key, String initValue) {\r
  43                 String value = get(key);\r
  44                 if (value != null){\r
  45                         return value;\r
  46                 }\r
  47                 hash.put(key, initValue);\r
  48                 return initValue;\r
  49         }\r
  50 \r
  51         public int getInt(String key, int initValue) {\r
  52                 return Integer.valueOf(get(key, String.valueOf(initValue)));\r
  53         }\r
  54         \r
  55         public void update(){\r
  56                 Set<Entry<String, String>> set = hash.entrySet();\r
  57                 for (Iterator<Entry<String, String>> it = set.iterator(); it.hasNext(); ){\r
  58                         Entry<String, String> entry = it.next();\r
  59                         String key = entry.getKey();\r
  60                         String value = entry.getValue();\r
  61                         pref.put(key, value);\r
  62                 }\r
  63                 hash.clear();\r
  64         }\r
  65 \r
  66         public void remove(String key) {\r
  67                 hash.put(key, null);\r
  68         }\r
  69         \r
  70         public void save(String key){\r
  71                 StringBuffer sb = new StringBuffer();\r
  72                 \r
  73                 Set<Entry<String, String>> set = hash.entrySet();\r
  74                 for (Iterator<Entry<String, String>> it = set.iterator(); it.hasNext(); ){\r
  75                         Entry<String, String> entry = it.next();\r
  76                         String prefKey = entry.getKey();\r
  77                         String prefValue = entry.getValue();\r
  78                         \r
  79                         sb.append(prefKey);\r
  80                         sb.append(DELM);\r
  81                         sb.append(prefValue);\r
  82                         sb.append(DELM);\r
  83                 }\r
  84                 pref.put(key, sb.toString());\r
  85         }\r
  86         \r
  87         public void restore(String key){\r
  88                 hash.clear();\r
  89 \r
  90                 String data = pref.get(key);\r
  91                 String[] str = data.split(DELM);\r
  92                 for (int i = 0; i < str.length / 2; i++){\r
  93                         String prefKey = str[i * 2];\r
  94                         String prefValue = str[i * 2 + 1];\r
  95                         put(prefKey, prefValue);\r
  96                 }\r
  97         }\r
  98 \r
  99 }\r