Android编程心得-SharedPreference中putStringset存取数据

在我们使用SharedPreference的时候，常用的就是存储配置文件信息，但有时我们需要存储易做图数组信息的时候，就可以用到putStringSet。

下面是写方法：

[html]
public void SaveSiteinfoToXml() {
    final SharedPreferences prefs = PreferenceManager
            .getDefaultSharedPreferences(MainActivity.this);
    Editor editor = prefs.edit();
    Set<String> siteno = new HashSet<String>();
    if (Unit_PublicVar.arr_DeatilContent != null) {
        for (int i = 0; i < Unit_PublicVar.arr_DeatilContent.length; i++) {
            siteno.add(Unit_PublicVar.arr_DeatilContent[i][0] + ","
                    + Unit_PublicVar.arr_DeatilContent[i][1] + ","
                    + Unit_PublicVar.arr_DeatilContent[i][2] + ","
                    + Unit_PublicVar.arr_DeatilContent[i][3]); //

        }
    }
    editor.putStringSet("站点信息", siteno);

    editor.commit();
}

public void SaveSiteinfoToXml() {
  final SharedPreferences prefs = PreferenceManager
    .getDefaultSharedPreferences(MainActivity.this);
  Editor editor = prefs.edit();
  Set<String> siteno = new HashSet<String>();
  if (Unit_PublicVar.arr_DeatilContent != null) {
   for (int i = 0; i < Unit_PublicVar.arr_DeatilContent.length; i++) {
    siteno.add(Unit_PublicVar.arr_DeatilContent[i][0] + ","
      + Unit_PublicVar.arr_DeatilContent[i][1] + ","
      + Unit_PublicVar.arr_DeatilContent[i][2] + ","
      + Unit_PublicVar.arr_DeatilContent[i][3]); //

   }
  }
  editor.putStringSet("站点信息", siteno);

editor.commit();
}
putStringset需要传入Set<String> 类型的参数 ,本函数的二维数组之前已经有值了，所以此处直接存储是没有问题的。

下面是读方法

[java]
   public void LoadParaFromXml() {
        final SharedPreferences prefs = PreferenceManager
                .getDefaultSharedPreferences(MainActivity.this);
        Set<String> siteno = new HashSet<String>();
        siteno = prefs.getStringSet("站点信息", siteno);
        if (siteno.size() > 0) {
            String[] data = (String[]) siteno.toArray(new String[siteno.size()]);   //将SET转换为数组
            Unit_PublicVar.arr_DeatilContent = new String[data.length][];
            for (int i = 0; i < data.length; i++) {
                Unit_PublicVar.arr_DeatilContent[i] = data[i].trim().split(
                        ",");
            }
}
}

public void LoadParaFromXml() {
  final SharedPreferences prefs = PreferenceManager
    .getDefaultSharedPreferences(MainActivity.this);
  Set<String> siteno = new HashSet<String>();
  siteno = prefs.getStringSet("站点信息", siteno);
  if (siteno.size() > 0) {
   String[] data = (String[]) siteno.toArray(new String[siteno.size()]); //将SET转换为数组
   Unit_PublicVar.arr_DeatilContent = new String[data.length][];
   for (int i = 0; i < data.length; i++) {
    Unit_PublicVar.arr_DeatilContent[i] = data[i].trim().split(
      ",");
   }
}
}

补充：移动开发 , Android ,