Code implementation to set Android device WIFI to never disconnect when sleeping
- 2020-06-03 08:19:28
- OfStack
MainActivity is as follows:
package cc.ab;
import android.os.Bundle;
import android.provider.Settings;
import android.app.Activity;
/**
* Demo describe :
* Set the device to remain in place during sleep WLAN open .
*
* The resources :
* 1 http://stackoverflow.com/questions/8652031/how-to-modify-wi-fi-sleep-policy-programmatically/8655070#8655070
* 2 http://blog.csdn.net/mrlixirong/article/details/24938637
* Thank you very much
*
* Matters needing attention :
* 1 This is the one that's used here android.provider.Settings.System.WIFI_SLEEP_POLICY
* Rather than Settings.System.WIFI_SLEEP_POLICY!!!!!!!!!!!!!!!!!!!!!!!
*
* 2 permissions <uses-permission android:name="android.permission.WRITE_SETTINGS"/>
*
* 3 In a real project , This is mandatory WIFI It's a little rude to never disconnect from sleep .
* You can write it down first WIFI Original strategy , It is better to revert back after our logic is complete .
*/
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("---> Before the change Wifi Sleep strategy value 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("---> The modified Wifi Sleep strategy value WIFI_SLEEP_POLICY="+wifiSleepPolicy);
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</RelativeLayout>
The code is as above, but in a real project, it would be rude to force WIFI to never disconnect when sleeping.
We can record the original strategy of WIFI and restore it after our logic is completed.