设置Android设备WIFI在休眠时永不断开的代码实现

MainActivity如下:

package cc.ab;

import android.os.Bundle;
import android.provider.Settings;
import android.app.Activity;

public class MainActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  setWifiNeverSleep();
 }

 private void setWifiNeverSleep(){
  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);
  
  
  wifiSleepPolicy=Settings.System.getInt(getContentResolver(),
 android.provider.Settings.System.WIFI_SLEEP_POLICY,
 Settings.System.WIFI_SLEEP_POLICY_DEFAULT);
    System.out.println("---> 修改后的Wifi休眠策略值 WIFI_SLEEP_POLICY="+wifiSleepPolicy);
 }
 
}


 

代码如上，不过在实际项目中,这么强制性地设置WIFI在休眠时永不断开有些粗鲁了.
可以先记录下WIFI原本的策略,待我们的逻辑完成后再还原回去为好.