android设置系统锁屏时间或屏保显示时间

public static final String SCREEN_OFF_TIMEOUT = screen_off_timeout; private final int SCREEN_TIMEOUT_VALUE_NONE = Integer.MAX_VALUE;//永不休眠 private DreamBackend mBackend;//屏保管理类 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);