/**
* 向文件写入属性值
*
* @param editor 指定的编辑器
* @param field 要写入的属性
* @param obj 取值对象
* @param pre key前缀
*/
private void put(SharedPreferences.Editor editor, Field field, Object obj, String pre) {
// 关闭属性访问权限检查
field.setAccessible(true);
try {
Log.v(LOG_TAG + "put", "field type is " + field.getType().getName());
Log.v(LOG_TAG + "put", "field name is " + field.getName());
Log.v(LOG_TAG + "put", "field value is " + field.get(obj));
// 是否需要加密
if (cipher != null && field.isAnnotationPresent(Encrypt.class)) {
Log.v(LOG_TAG + "put", "field " + field.getName() + " use encrypt");
Object data = field.get(obj);
if (data != null) {
editor.putString(pre + "." + field.getName(), cipher.encrypt(String.valueOf(data)));
}
return;
}
// 根据属性类型选择操作
switch (field.getType().getName()) {
case "java.lang.String":
editor.putString(pre + "." + field.getName(), (String) field.get(obj));
break;
case "int":
editor.putInt(pre + "." + field.getName(), field.getInt(obj));
break;
case "boolean":
editor.putBoolean(pre + "." + field.getName(), field.getBoolean(obj));
break;
case "float":
editor.putFloat(pre + "." + field.getName(), field.getFloat(obj));
break;
case "long":
editor.putLong(pre + "." + field.getName(), field.getLong(obj));
break;
}
} catch (IllegalAccessException e) {
Log.d(LOG_TAG + "put", "IllegalAccessException is " + e.getMessage());
}
}
/**
* 从文件读取属性值
*
* @param reader 读取器
* @param field 要读取的属性
* @param obj 目标对象
* @param pre key前缀
*/
private void push(SharedPreferences reader, Field field, Object obj, String pre) {
// 关闭属性访问权限检查
field.setAccessible(true);
try {
Log.v(LOG_TAG + "push", "field type is " + field.getType().getName());
Log.v(LOG_TAG + "push", "field name is " + field.getName());
// 是否需要解密
if (cipher != null && field.isAnnotationPresent(Encrypt.class)) {
Log.v(LOG_TAG + "push", "field " + field.getName() + " need decrypt");
String cipherText = reader.getString(pre + "." + field.getName(), (String) field.get(obj));
if (cipherText != null) {
String data = cipher.decrypt(cipherText);
// 根据属性类型选择操作
switch (field.getType().getName()) {
case "java.lang.String":
field.set(obj, data);
break;
case "int":
field.setInt(obj, Integer.parseInt(data));
break;
case "boolean":
field.setBoolean(obj, Boolean.parseBoolean(data));
break;
case "float":
field.setFloat(obj, Float.parseFloat(data));
break;
case "long":
field.setLong(obj, Long.parseLong(data));
break;
}
}
return;
}
// 根据属性类型选择操作
switch (field.getType().getName()) {
case "java.lang.String":
field.set(obj, reader.getString(pre + "." + field.getName(), (String) field.get(obj)));
break;
case "int":
field.setInt(obj, reader.getInt(pre + "." + field.getName(), field.getInt(obj)));
break;
case "boolean":
field.setBoolean(
obj, reader.getBoolean(pre + "." + field.getName(), field.getBoolean(obj)));
break;
case "float":
field.setFloat(obj, reader.getFloat(pre + "." + field.getName(), field.getFloat(obj)));
break;
case "long":
field.setLong(obj, reader.getLong(pre + "." + field.getName(), field.getLong(obj)));
break;
}
Log.v(LOG_TAG + "push", "field value is " + field.get(obj));
} catch (IllegalAccessException e) {
Log.d(LOG_TAG + "push", "IllegalAccessException is " + e.getMessage());
}
}
