获取Android设备唯一号

private static volatile Method set = null;
private static volatile Method get = null;

public static void set(String prop, String value) {

try {
if (null == set) {
synchronized (PropertyUtils.class) {
if (null == set) {
Class<?> cls = Class.forName("android.os.SystemProperties");
set = cls.getDeclaredMethod("set", new Class<?>[]{String.class, String.class});
}
}
}
set.invoke(null, new Object[]{prop, value});
} catch (Throwable e) {
e.printStackTrace();
}
}

public static String get(String prop, String defaultvalue) {
String value = defaultvalue;
try {
if (null == get) {
synchronized (PropertyUtils.class) {
if (null == get) {
Class<?> cls = Class.forName("android.os.SystemProperties");
get = cls.getDeclaredMethod("get", new Class<?>[]{String.class, String.class});
}
}
}
value = (String) (get.invoke(null, new Object[]{prop, defaultvalue}));
} catch (Throwable e) {
e.printStackTrace();
}
return value;
}