设置Android设备息屏后WIFI不休眠
int wifiSleepPolicy=0;
wifiSleepPolicy=Settings.System.getInt(getContentResolver(),
android.provider.Settings.System.WIFI_SLEEP_POLICY,
Settings.System.WIFI_SLEEP_POLICY_DEFAULT);
System.out.println("---> 修改前的Wifi休眠策略值 WIFI_SLEEP_POLICY="+wifiSleepPolicy);
Settings.System.putInt(getContentResolver(),
android.provider.Settings.System.WIFI_SLEEP_POLICY,
Settings.System.WIFI_SLEEP_POLICY_NEVER);
https://blog.csdn.net/weixin_34887221/article/details/117473066